libgo: Update to weekly.2012-01-20.

From-SVN: r183540

46 files changed, 891 insertions, 807 deletions

diff --git a/libgo/go/net/dnsclient_unix.go b/libgo/go/net/dnsclient_unix.go
index 07e72ccb862..18c39360e40 100644
--- a/libgo/go/net/dnsclient_unix.go
+++ b/libgo/go/net/dnsclient_unix.go
@@ -45,7 +45,11 @@ func exchange(cfg *dnsConfig, c Conn, name string, qtype uint16) (*dnsMsg, error
 			return nil, err
 		}
 
-		c.SetReadTimeout(int64(cfg.timeout) * 1e9) // nanoseconds
+		if cfg.timeout == 0 {
+			c.SetReadDeadline(time.Time{})
+		} else {
+			c.SetReadDeadline(time.Now().Add(time.Duration(cfg.timeout) * time.Second))
+		}
 
 		buf := make([]byte, 2000) // More than enough.
 		n, err = c.Read(buf)
diff --git a/libgo/go/net/doc.go b/libgo/go/net/doc.go
new file mode 100644
index 00000000000..3a44e528eb2
--- /dev/null
+++ b/libgo/go/net/doc.go
@@ -0,0 +1,59 @@
+// Copyright 2012 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package net
+
+// LookupHost looks up the given host using the local resolver.
+// It returns an array of that host's addresses.
+func LookupHost(host string) (addrs []string, err error) {
+	return lookupHost(host)
+}
+
+// LookupIP looks up host using the local resolver.
+// It returns an array of that host's IPv4 and IPv6 addresses.
+func LookupIP(host string) (addrs []IP, err error) {
+	return lookupIP(host)
+}
+
+// LookupPort looks up the port for the given network and service.
+func LookupPort(network, service string) (port int, err error) {
+	return lookupPort(network, service)
+}
+
+// LookupCNAME returns the canonical DNS host for the given name.
+// Callers that do not care about the canonical name can call
+// LookupHost or LookupIP directly; both take care of resolving
+// the canonical name as part of the lookup.
+func LookupCNAME(name string) (cname string, err error) {
+	return lookupCNAME(name)
+}
+
+// LookupSRV tries to resolve an SRV query of the given service,
+// protocol, and domain name.  The proto is "tcp" or "udp".
+// The returned records are sorted by priority and randomized
+// by weight within a priority.
+//
+// LookupSRV constructs the DNS name to look up following RFC 2782.
+// That is, it looks up _service._proto.name.  To accommodate services
+// publishing SRV records under non-standard names, if both service
+// and proto are empty strings, LookupSRV looks up name directly.
+func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
+	return lookupSRV(service, proto, name)
+}
+
+// LookupMX returns the DNS MX records for the given domain name sorted by preference.
+func LookupMX(name string) (mx []*MX, err error) {
+	return lookupMX(name)
+}
+
+// LookupTXT returns the DNS TXT records for the given domain name.
+func LookupTXT(name string) (txt []string, err error) {
+	return lookupTXT(name)
+}
+
+// LookupAddr performs a reverse lookup for the given address, returning a list
+// of names mapping to that address.
+func LookupAddr(addr string) (name []string, err error) {
+	return lookupAddr(addr)
+}
diff --git a/libgo/go/net/fd.go b/libgo/go/net/fd.go
index 3dec9f4beb8..7ecd135d206 100644
--- a/libgo/go/net/fd.go
+++ b/libgo/go/net/fd.go
@@ -24,7 +24,7 @@ type netFD struct {
 	// immutable until Close
 	sysfd   int
 	family  int
-	proto   int
+	sotype  int
 	sysfile *os.File
 	cr      chan bool
 	cw      chan bool
@@ -33,12 +33,10 @@ type netFD struct {
 	raddr   Addr
 
 	// owned by client
-	rdeadline_delta int64
-	rdeadline       int64
-	rio             sync.Mutex
-	wdeadline_delta int64
-	wdeadline       int64
-	wio             sync.Mutex
+	rdeadline int64
+	rio       sync.Mutex
+	wdeadline int64
+	wio       sync.Mutex
 
 	// owned by fd wait server
 	ncr, ncw int
@@ -276,7 +274,7 @@ func startServer() {
 	pollserver = p
 }
 
-func newFD(fd, family, proto int, net string) (f *netFD, err error) {
+func newFD(fd, family, sotype int, net string) (f *netFD, err error) {
 	onceStartServer.Do(startServer)
 	if e := syscall.SetNonblock(fd, true); e != nil {
 		return nil, e
@@ -284,7 +282,7 @@ func newFD(fd, family, proto int, net string) (f *netFD, err error) {
 	f = &netFD{
 		sysfd:  fd,
 		family: family,
-		proto:  proto,
+		sotype: sotype,
 		net:    net,
 	}
 	f.cr = make(chan bool, 1)
@@ -388,11 +386,6 @@ func (fd *netFD) Read(p []byte) (n int, err error) {
 	if fd.sysfile == nil {
 		return 0, os.EINVAL
 	}
-	if fd.rdeadline_delta > 0 {
-		fd.rdeadline = pollserver.Now() + fd.rdeadline_delta
-	} else {
-		fd.rdeadline = 0
-	}
 	for {
 		n, err = syscall.Read(fd.sysfile.Fd(), p)
 		if err == syscall.EAGAIN {
@@ -404,7 +397,7 @@ func (fd *netFD) Read(p []byte) (n int, err error) {
 		}
 		if err != nil {
 			n = 0
-		} else if n == 0 && err == nil && fd.proto != syscall.SOCK_DGRAM {
+		} else if n == 0 && err == nil && fd.sotype != syscall.SOCK_DGRAM {
 			err = io.EOF
 		}
 		break
@@ -423,11 +416,6 @@ func (fd *netFD) ReadFrom(p []byte) (n int, sa syscall.Sockaddr, err error) {
 	defer fd.rio.Unlock()
 	fd.incref()
 	defer fd.decref()
-	if fd.rdeadline_delta > 0 {
-		fd.rdeadline = pollserver.Now() + fd.rdeadline_delta
-	} else {
-		fd.rdeadline = 0
-	}
 	for {
 		n, sa, err = syscall.Recvfrom(fd.sysfd, p, 0)
 		if err == syscall.EAGAIN {
@@ -456,11 +444,6 @@ func (fd *netFD) ReadMsg(p []byte, oob []byte) (n, oobn, flags int, sa syscall.S
 	defer fd.rio.Unlock()
 	fd.incref()
 	defer fd.decref()
-	if fd.rdeadline_delta > 0 {
-		fd.rdeadline = pollserver.Now() + fd.rdeadline_delta
-	} else {
-		fd.rdeadline = 0
-	}
 	for {
 		n, oobn, flags, sa, err = syscall.Recvmsg(fd.sysfd, p, oob, 0)
 		if err == syscall.EAGAIN {
@@ -493,11 +476,6 @@ func (fd *netFD) Write(p []byte) (n int, err error) {
 	if fd.sysfile == nil {
 		return 0, os.EINVAL
 	}
-	if fd.wdeadline_delta > 0 {
-		fd.wdeadline = pollserver.Now() + fd.wdeadline_delta
-	} else {
-		fd.wdeadline = 0
-	}
 	nn := 0
 
 	for {
@@ -539,11 +517,6 @@ func (fd *netFD) WriteTo(p []byte, sa syscall.Sockaddr) (n int, err error) {
 	defer fd.wio.Unlock()
 	fd.incref()
 	defer fd.decref()
-	if fd.wdeadline_delta > 0 {
-		fd.wdeadline = pollserver.Now() + fd.wdeadline_delta
-	} else {
-		fd.wdeadline = 0
-	}
 	for {
 		err = syscall.Sendto(fd.sysfd, p, 0, sa)
 		if err == syscall.EAGAIN {
@@ -571,11 +544,6 @@ func (fd *netFD) WriteMsg(p []byte, oob []byte, sa syscall.Sockaddr) (n int, oob
 	defer fd.wio.Unlock()
 	fd.incref()
 	defer fd.decref()
-	if fd.wdeadline_delta > 0 {
-		fd.wdeadline = pollserver.Now() + fd.wdeadline_delta
-	} else {
-		fd.wdeadline = 0
-	}
 	for {
 		err = syscall.Sendmsg(fd.sysfd, p, oob, sa, 0)
 		if err == syscall.EAGAIN {
@@ -603,11 +571,6 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err err
 
 	fd.incref()
 	defer fd.decref()
-	if fd.rdeadline_delta > 0 {
-		fd.rdeadline = pollserver.Now() + fd.rdeadline_delta
-	} else {
-		fd.rdeadline = 0
-	}
 
 	// See ../syscall/exec.go for description of ForkLock.
 	// It is okay to hold the lock across syscall.Accept
@@ -636,7 +599,7 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err err
 	syscall.CloseOnExec(s)
 	syscall.ForkLock.RUnlock()
 
-	if nfd, err = newFD(s, fd.family, fd.proto, fd.net); err != nil {
+	if nfd, err = newFD(s, fd.family, fd.sotype, fd.net); err != nil {
 		syscall.Close(s)
 		return nil, err
 	}
diff --git a/libgo/go/net/fd_windows.go b/libgo/go/net/fd_windows.go
index 7bffd1ca2fb..6e37b4eb6f1 100644
--- a/libgo/go/net/fd_windows.go
+++ b/libgo/go/net/fd_windows.go
@@ -150,12 +150,13 @@ func (s *ioSrv) ProcessRemoteIO() {
 }
 
 // ExecIO executes a single io operation. It either executes it
-// inline, or, if timeouts are employed, passes the request onto
+// inline, or, if a deadline is employed, passes the request onto
 // a special goroutine and waits for completion or cancels request.
-func (s *ioSrv) ExecIO(oi anOpIface, deadline_delta int64) (n int, err error) {
+// deadline is unix nanos.
+func (s *ioSrv) ExecIO(oi anOpIface, deadline int64) (n int, err error) {
 	var e error
 	o := oi.Op()
-	if deadline_delta > 0 {
+	if deadline != 0 {
 		// Send request to a special dedicated thread,
 		// so it can stop the io with CancelIO later.
 		s.submchan <- oi
@@ -172,12 +173,17 @@ func (s *ioSrv) ExecIO(oi anOpIface, deadline_delta int64) (n int, err error) {
 		return 0, &OpError{oi.Name(), o.fd.net, o.fd.laddr, e}
 	}
 	// Wait for our request to complete.
-	// TODO(rsc): This should stop the timer.
 	var r ioResult
-	if deadline_delta > 0 {
+	if deadline != 0 {
+		dt := deadline - time.Now().UnixNano()
+		if dt < 1 {
+			dt = 1
+		}
+		timer := time.NewTimer(time.Duration(dt) * time.Nanosecond)
+		defer timer.Stop()
 		select {
 		case r = <-o.resultc:
-		case <-time.After(time.Duration(deadline_delta) * time.Nanosecond):
+		case <-timer.C:
 			s.canchan <- oi
 			<-o.errnoc
 			r = <-o.resultc
@@ -224,7 +230,7 @@ type netFD struct {
 	// immutable until Close
 	sysfd   syscall.Handle
 	family  int
-	proto   int
+	sotype  int
 	net     string
 	laddr   Addr
 	raddr   Addr
@@ -232,19 +238,17 @@ type netFD struct {
 	errnoc  [2]chan error    // read/write submit or cancel operation errors
 
 	// owned by client
-	rdeadline_delta int64
-	rdeadline       int64
-	rio             sync.Mutex
-	wdeadline_delta int64
-	wdeadline       int64
-	wio             sync.Mutex
+	rdeadline int64
+	rio       sync.Mutex
+	wdeadline int64
+	wio       sync.Mutex
 }
 
-func allocFD(fd syscall.Handle, family, proto int, net string) (f *netFD) {
+func allocFD(fd syscall.Handle, family, sotype int, net string) (f *netFD) {
 	f = &netFD{
 		sysfd:  fd,
 		family: family,
-		proto:  proto,
+		sotype: sotype,
 		net:    net,
 	}
 	runtime.SetFinalizer(f, (*netFD).Close)
@@ -357,7 +361,7 @@ func (fd *netFD) Read(buf []byte) (n int, err error) {
 	}
 	var o readOp
 	o.Init(fd, buf, 'r')
-	n, err = iosrv.ExecIO(&o, fd.rdeadline_delta)
+	n, err = iosrv.ExecIO(&o, fd.rdeadline)
 	if err == nil && n == 0 {
 		err = io.EOF
 	}
@@ -398,7 +402,7 @@ func (fd *netFD) ReadFrom(buf []byte) (n int, sa syscall.Sockaddr, err error) {
 	var o readFromOp
 	o.Init(fd, buf, 'r')
 	o.rsan = int32(unsafe.Sizeof(o.rsa))
-	n, err = iosrv.ExecIO(&o, fd.rdeadline_delta)
+	n, err = iosrv.ExecIO(&o, fd.rdeadline)
 	if err != nil {
 		return 0, nil, err
 	}
@@ -434,7 +438,7 @@ func (fd *netFD) Write(buf []byte) (n int, err error) {
 	}
 	var o writeOp
 	o.Init(fd, buf, 'w')
-	return iosrv.ExecIO(&o, fd.wdeadline_delta)
+	return iosrv.ExecIO(&o, fd.wdeadline)
 }
 
 // WriteTo to network.
@@ -470,7 +474,7 @@ func (fd *netFD) WriteTo(buf []byte, sa syscall.Sockaddr) (n int, err error) {
 	var o writeToOp
 	o.Init(fd, buf, 'w')
 	o.sa = sa
-	return iosrv.ExecIO(&o, fd.wdeadline_delta)
+	return iosrv.ExecIO(&o, fd.wdeadline)
 }
 
 // Accept new network connections.
@@ -502,7 +506,7 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err err
 	// Get new socket.
 	// See ../syscall/exec.go for description of ForkLock.
 	syscall.ForkLock.RLock()
-	s, e := syscall.Socket(fd.family, fd.proto, 0)
+	s, e := syscall.Socket(fd.family, fd.sotype, 0)
 	if e != nil {
 		syscall.ForkLock.RUnlock()
 		return nil, e
@@ -542,7 +546,7 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err err
 	lsa, _ := lrsa.Sockaddr()
 	rsa, _ := rrsa.Sockaddr()
 
-	nfd = allocFD(s, fd.family, fd.proto, fd.net)
+	nfd = allocFD(s, fd.family, fd.sotype, fd.net)
 	nfd.setAddr(toAddr(lsa), toAddr(rsa))
 	return nfd, nil
 }
diff --git a/libgo/go/net/http/cgi/host.go b/libgo/go/net/http/cgi/host.go
index 615d366aedc..73a9b6ea681 100644
--- a/libgo/go/net/http/cgi/host.go
+++ b/libgo/go/net/http/cgi/host.go
@@ -124,7 +124,7 @@ func (h *Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 		"GATEWAY_INTERFACE=CGI/1.1",
 		"REQUEST_METHOD=" + req.Method,
 		"QUERY_STRING=" + req.URL.RawQuery,
-		"REQUEST_URI=" + req.URL.RawPath,
+		"REQUEST_URI=" + req.URL.RequestURI(),
 		"PATH_INFO=" + pathInfo,
 		"SCRIPT_NAME=" + root,
 		"SCRIPT_FILENAME=" + h.Path,
diff --git a/libgo/go/net/http/cgi/host_test.go b/libgo/go/net/http/cgi/host_test.go
index 849cb008b76..b8dbdb4edd2 100644
--- a/libgo/go/net/http/cgi/host_test.go
+++ b/libgo/go/net/http/cgi/host_test.go
@@ -364,7 +364,7 @@ func TestCopyError(t *testing.T) {
 	conn.Close()
 
 	tries := 0
-	for tries < 15 && childRunning() {
+	for tries < 25 && childRunning() {
 		time.Sleep(50 * time.Millisecond * time.Duration(tries))
 		tries++
 	}
diff --git a/libgo/go/net/http/client.go b/libgo/go/net/http/client.go
index a4f8f19aac8..1d70672695c 100644
--- a/libgo/go/net/http/client.go
+++ b/libgo/go/net/http/client.go
@@ -24,11 +24,13 @@ import (
 // The Client's Transport typically has internal state (cached
 // TCP connections), so Clients should be reused instead of created as
 // needed. Clients are safe for concurrent use by multiple goroutines.
-//
-// Client is not yet very configurable.
 type Client struct {
-	Transport RoundTripper // if nil, DefaultTransport is used
+	// Transport specifies the mechanism by which individual
+	// HTTP requests are made.
+	// If nil, DefaultTransport is used.
+	Transport RoundTripper
 
+	// CheckRedirect specifies the policy for handling redirects.
 	// If CheckRedirect is not nil, the client calls it before
 	// following an HTTP redirect. The arguments req and via
 	// are the upcoming request and the requests made already,
@@ -121,9 +123,8 @@ func send(req *Request, t RoundTripper) (resp *Response, err error) {
 		req.Header = make(Header)
 	}
 
-	info := req.URL.RawUserinfo
-	if len(info) > 0 {
-		req.Header.Set("Authorization", "Basic "+base64.URLEncoding.EncodeToString([]byte(info)))
+	if u := req.URL.User; u != nil {
+		req.Header.Set("Authorization", "Basic "+base64.URLEncoding.EncodeToString([]byte(u.String())))
 	}
 	return t.RoundTrip(req)
 }
@@ -213,11 +214,11 @@ func (c *Client) doFollowingRedirects(ireq *Request) (r *Response, err error) {
 					break
 				}
 			}
-			for _, cookie := range jar.Cookies(req.URL) {
-				req.AddCookie(cookie)
-			}
 		}
 
+		for _, cookie := range jar.Cookies(req.URL) {
+			req.AddCookie(cookie)
+		}
 		urlStr = req.URL.String()
 		if r, err = send(req, c.Transport); err != nil {
 			break
diff --git a/libgo/go/net/http/client_test.go b/libgo/go/net/http/client_test.go
index 57a9dd9574d..c74611011a8 100644
--- a/libgo/go/net/http/client_test.go
+++ b/libgo/go/net/http/client_test.go
@@ -18,6 +18,7 @@ import (
 	"net/url"
 	"strconv"
 	"strings"
+	"sync"
 	"testing"
 )
 
@@ -236,6 +237,92 @@ func TestRedirects(t *testing.T) {
 	}
 }
 
+var expectedCookies = []*Cookie{
+	&Cookie{Name: "ChocolateChip", Value: "tasty"},
+	&Cookie{Name: "First", Value: "Hit"},
+	&Cookie{Name: "Second", Value: "Hit"},
+}
+
+var echoCookiesRedirectHandler = HandlerFunc(func(w ResponseWriter, r *Request) {
+	for _, cookie := range r.Cookies() {
+		SetCookie(w, cookie)
+	}
+	if r.URL.Path == "/" {
+		SetCookie(w, expectedCookies[1])
+		Redirect(w, r, "/second", StatusMovedPermanently)
+	} else {
+		SetCookie(w, expectedCookies[2])
+		w.Write([]byte("hello"))
+	}
+})
+
+// Just enough correctness for our redirect tests. Uses the URL.Host as the
+// scope of all cookies.
+type TestJar struct {
+	m      sync.Mutex
+	perURL map[string][]*Cookie
+}
+
+func (j *TestJar) SetCookies(u *url.URL, cookies []*Cookie) {
+	j.m.Lock()
+	defer j.m.Unlock()
+	j.perURL[u.Host] = cookies
+}
+
+func (j *TestJar) Cookies(u *url.URL) []*Cookie {
+	j.m.Lock()
+	defer j.m.Unlock()
+	return j.perURL[u.Host]
+}
+
+func TestRedirectCookiesOnRequest(t *testing.T) {
+	var ts *httptest.Server
+	ts = httptest.NewServer(echoCookiesRedirectHandler)
+	defer ts.Close()
+	c := &Client{}
+	req, _ := NewRequest("GET", ts.URL, nil)
+	req.AddCookie(expectedCookies[0])
+	// TODO: Uncomment when an implementation of a RFC6265 cookie jar lands.
+	_ = c
+	// resp, _ := c.Do(req)
+	// matchReturnedCookies(t, expectedCookies, resp.Cookies())
+
+	req, _ = NewRequest("GET", ts.URL, nil)
+	// resp, _ = c.Do(req)
+	// matchReturnedCookies(t, expectedCookies[1:], resp.Cookies())
+}
+
+func TestRedirectCookiesJar(t *testing.T) {
+	var ts *httptest.Server
+	ts = httptest.NewServer(echoCookiesRedirectHandler)
+	defer ts.Close()
+	c := &Client{}
+	c.Jar = &TestJar{perURL: make(map[string][]*Cookie)}
+	u, _ := url.Parse(ts.URL)
+	c.Jar.SetCookies(u, []*Cookie{expectedCookies[0]})
+	resp, _ := c.Get(ts.URL)
+	matchReturnedCookies(t, expectedCookies, resp.Cookies())
+}
+
+func matchReturnedCookies(t *testing.T, expected, given []*Cookie) {
+	t.Logf("Received cookies: %v", given)
+	if len(given) != len(expected) {
+		t.Errorf("Expected %d cookies, got %d", len(expected), len(given))
+	}
+	for _, ec := range expected {
+		foundC := false
+		for _, c := range given {
+			if ec.Name == c.Name && ec.Value == c.Value {
+				foundC = true
+				break
+			}
+		}
+		if !foundC {
+			t.Errorf("Missing cookie %v", ec)
+		}
+	}
+}
+
 func TestStreamingGet(t *testing.T) {
 	say := make(chan string)
 	ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
diff --git a/libgo/go/net/http/doc.go b/libgo/go/net/http/doc.go
index 2dbcf8dc97c..8962ed31e6a 100644
--- a/libgo/go/net/http/doc.go
+++ b/libgo/go/net/http/doc.go
@@ -34,7 +34,8 @@ settings, create a Client:
 	resp, err := client.Get("http://example.com")
 	// ...
 
-	req := http.NewRequest("GET", "http://example.com", nil)
+	req, err := http.NewRequest("GET", "http://example.com", nil)
+	// ...
 	req.Header.Add("If-None-Match", `W/"wyzzy"`)
 	resp, err := client.Do(req)
 	// ...
diff --git a/libgo/go/net/http/fs_test.go b/libgo/go/net/http/fs_test.go
index 976ee75c7dd..85cad3ec71b 100644
--- a/libgo/go/net/http/fs_test.go
+++ b/libgo/go/net/http/fs_test.go
@@ -224,16 +224,15 @@ func TestEmptyDirOpenCWD(t *testing.T) {
 
 func TestServeFileContentType(t *testing.T) {
 	const ctype = "icecream/chocolate"
-	override := false
 	ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
-		if override {
+		if r.FormValue("override") == "1" {
 			w.Header().Set("Content-Type", ctype)
 		}
 		ServeFile(w, r, "testdata/file")
 	}))
 	defer ts.Close()
-	get := func(want string) {
-		resp, err := Get(ts.URL)
+	get := func(override, want string) {
+		resp, err := Get(ts.URL + "?override=" + override)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -241,9 +240,8 @@ func TestServeFileContentType(t *testing.T) {
 			t.Errorf("Content-Type mismatch: got %q, want %q", h, want)
 		}
 	}
-	get("text/plain; charset=utf-8")
-	override = true
-	get(ctype)
+	get("0", "text/plain; charset=utf-8")
+	get("1", ctype)
 }
 
 func TestServeFileMimeType(t *testing.T) {
diff --git a/libgo/go/net/http/httputil/dump.go b/libgo/go/net/http/httputil/dump.go
index 31696aec86e..b8a98ee4292 100644
--- a/libgo/go/net/http/httputil/dump.go
+++ b/libgo/go/net/http/httputil/dump.go
@@ -13,6 +13,7 @@ import (
 	"net"
 	"net/http"
 	"strings"
+	"time"
 )
 
 // One of the copies, say from b to r2, could be avoided by using a more
@@ -36,12 +37,12 @@ type dumpConn struct {
 	io.Reader
 }
 
-func (c *dumpConn) Close() error                     { return nil }
-func (c *dumpConn) LocalAddr() net.Addr              { return nil }
-func (c *dumpConn) RemoteAddr() net.Addr             { return nil }
-func (c *dumpConn) SetTimeout(nsec int64) error      { return nil }
-func (c *dumpConn) SetReadTimeout(nsec int64) error  { return nil }
-func (c *dumpConn) SetWriteTimeout(nsec int64) error { return nil }
+func (c *dumpConn) Close() error                       { return nil }
+func (c *dumpConn) LocalAddr() net.Addr                { return nil }
+func (c *dumpConn) RemoteAddr() net.Addr               { return nil }
+func (c *dumpConn) SetDeadline(t time.Time) error      { return nil }
+func (c *dumpConn) SetReadDeadline(t time.Time) error  { return nil }
+func (c *dumpConn) SetWriteDeadline(t time.Time) error { return nil }
 
 // DumpRequestOut is like DumpRequest but includes
 // headers that the standard http.Transport adds,
@@ -124,16 +125,8 @@ func DumpRequest(req *http.Request, body bool) (dump []byte, err error) {
 
 	var b bytes.Buffer
 
-	urlStr := req.URL.Raw
-	if urlStr == "" {
-		urlStr = valueOrDefault(req.URL.EncodedPath(), "/")
-		if req.URL.RawQuery != "" {
-			urlStr += "?" + req.URL.RawQuery
-		}
-	}
-
-	fmt.Fprintf(&b, "%s %s HTTP/%d.%d\r\n", valueOrDefault(req.Method, "GET"), urlStr,
-		req.ProtoMajor, req.ProtoMinor)
+	fmt.Fprintf(&b, "%s %s HTTP/%d.%d\r\n", valueOrDefault(req.Method, "GET"),
+		req.URL.RequestURI(), req.ProtoMajor, req.ProtoMinor)
 
 	host := req.Host
 	if host == "" && req.URL != nil {
diff --git a/libgo/go/net/http/httputil/reverseproxy.go b/libgo/go/net/http/httputil/reverseproxy.go
index 1dc83e7d032..1072e2e3426 100644
--- a/libgo/go/net/http/httputil/reverseproxy.go
+++ b/libgo/go/net/http/httputil/reverseproxy.go
@@ -59,11 +59,6 @@ func NewSingleHostReverseProxy(target *url.URL) *ReverseProxy {
 		req.URL.Scheme = target.Scheme
 		req.URL.Host = target.Host
 		req.URL.Path = singleJoiningSlash(target.Path, req.URL.Path)
-		if q := req.URL.RawQuery; q != "" {
-			req.URL.RawPath = req.URL.Path + "?" + q
-		} else {
-			req.URL.RawPath = req.URL.Path
-		}
 		req.URL.RawQuery = target.RawQuery
 	}
 	return &ReverseProxy{Director: director}
diff --git a/libgo/go/net/http/readrequest_test.go b/libgo/go/net/http/readrequest_test.go
index ad7e3c02b0c..da3e4050fe1 100644
--- a/libgo/go/net/http/readrequest_test.go
+++ b/libgo/go/net/http/readrequest_test.go
@@ -44,15 +44,9 @@ var reqTests = []reqTest{
 		&Request{
 			Method: "GET",
 			URL: &url.URL{
-				Raw:          "http://www.techcrunch.com/",
-				Scheme:       "http",
-				RawPath:      "/",
-				RawAuthority: "www.techcrunch.com",
-				RawUserinfo:  "",
-				Host:         "www.techcrunch.com",
-				Path:         "/",
-				RawQuery:     "",
-				Fragment:     "",
+				Scheme: "http",
+				Host:   "www.techcrunch.com",
+				Path:   "/",
 			},
 			Proto:      "HTTP/1.1",
 			ProtoMajor: 1,
@@ -86,9 +80,7 @@ var reqTests = []reqTest{
 		&Request{
 			Method: "GET",
 			URL: &url.URL{
-				Raw:     "/",
-				Path:    "/",
-				RawPath: "/",
+				Path: "/",
 			},
 			Proto:         "HTTP/1.1",
 			ProtoMajor:    1,
@@ -113,15 +105,7 @@ var reqTests = []reqTest{
 		&Request{
 			Method: "GET",
 			URL: &url.URL{
-				Raw:          "//user@host/is/actually/a/path/",
-				Scheme:       "",
-				RawPath:      "//user@host/is/actually/a/path/",
-				RawAuthority: "",
-				RawUserinfo:  "",
-				Host:         "",
-				Path:         "//user@host/is/actually/a/path/",
-				RawQuery:     "",
-				Fragment:     "",
+				Path: "//user@host/is/actually/a/path/",
 			},
 			Proto:         "HTTP/1.1",
 			ProtoMajor:    1,
@@ -170,9 +154,7 @@ var reqTests = []reqTest{
 		&Request{
 			Method: "POST",
 			URL: &url.URL{
-				Raw:     "/",
-				Path:    "/",
-				RawPath: "/",
+				Path: "/",
 			},
 			TransferEncoding: []string{"chunked"},
 			Proto:            "HTTP/1.1",
diff --git a/libgo/go/net/http/request.go b/libgo/go/net/http/request.go
index 260301005eb..5a4e739073a 100644
--- a/libgo/go/net/http/request.go
+++ b/libgo/go/net/http/request.go
@@ -302,26 +302,14 @@ func (req *Request) write(w io.Writer, usingProxy bool, extraHeaders Header) err
 		host = req.URL.Host
 	}
 
-	urlStr := req.URL.RawPath
-	if strings.HasPrefix(urlStr, "?") {
-		urlStr = "/" + urlStr // Issue 2344
-	}
-	if urlStr == "" {
-		urlStr = valueOrDefault(req.URL.RawPath, valueOrDefault(req.URL.EncodedPath(), "/"))
-		if req.URL.RawQuery != "" {
-			urlStr += "?" + req.URL.RawQuery
-		}
-		if usingProxy {
-			if urlStr == "" || urlStr[0] != '/' {
-				urlStr = "/" + urlStr
-			}
-			urlStr = req.URL.Scheme + "://" + host + urlStr
-		}
+	ruri := req.URL.RequestURI()
+	if usingProxy && req.URL.Scheme != "" && req.URL.Opaque == "" {
+		ruri = req.URL.Scheme + "://" + host + ruri
 	}
-	// TODO(bradfitz): escape at least newlines in urlStr?
+	// TODO(bradfitz): escape at least newlines in ruri?
 
 	bw := bufio.NewWriter(w)
-	fmt.Fprintf(bw, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), urlStr)
+	fmt.Fprintf(bw, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), ruri)
 
 	// Header lines
 	fmt.Fprintf(bw, "Host: %s\r\n", host)
diff --git a/libgo/go/net/http/requestwrite_test.go b/libgo/go/net/http/requestwrite_test.go
index 8081589f5f2..fc3186f0c0c 100644
--- a/libgo/go/net/http/requestwrite_test.go
+++ b/libgo/go/net/http/requestwrite_test.go
@@ -32,15 +32,9 @@ var reqWriteTests = []reqWriteTest{
 		Req: Request{
 			Method: "GET",
 			URL: &url.URL{
-				Raw:          "http://www.techcrunch.com/",
-				Scheme:       "http",
-				RawPath:      "http://www.techcrunch.com/",
-				RawAuthority: "www.techcrunch.com",
-				RawUserinfo:  "",
-				Host:         "www.techcrunch.com",
-				Path:         "/",
-				RawQuery:     "",
-				Fragment:     "",
+				Scheme: "http",
+				Host:   "www.techcrunch.com",
+				Path:   "/",
 			},
 			Proto:      "HTTP/1.1",
 			ProtoMajor: 1,
@@ -60,7 +54,7 @@ var reqWriteTests = []reqWriteTest{
 			Form:  map[string][]string{},
 		},
 
-		WantWrite: "GET http://www.techcrunch.com/ HTTP/1.1\r\n" +
+		WantWrite: "GET / HTTP/1.1\r\n" +
 			"Host: www.techcrunch.com\r\n" +
 			"User-Agent: Fake\r\n" +
 			"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" +
@@ -198,7 +192,7 @@ var reqWriteTests = []reqWriteTest{
 			"\r\n" +
 			"abcdef",
 
-		WantProxy: "POST / HTTP/1.1\r\n" +
+		WantProxy: "POST http://example.com/ HTTP/1.1\r\n" +
 			"Host: example.com\r\n" +
 			"User-Agent: Go http package\r\n" +
 			"Content-Length: 6\r\n" +
diff --git a/libgo/go/net/http/serve_test.go b/libgo/go/net/http/serve_test.go
index 24e6b50dab8..147c216ec78 100644
--- a/libgo/go/net/http/serve_test.go
+++ b/libgo/go/net/http/serve_test.go
@@ -84,15 +84,15 @@ func (c *testConn) RemoteAddr() net.Addr {
 	return dummyAddr("remote-addr")
 }
 
-func (c *testConn) SetTimeout(nsec int64) error {
+func (c *testConn) SetDeadline(t time.Time) error {
 	return nil
 }
 
-func (c *testConn) SetReadTimeout(nsec int64) error {
+func (c *testConn) SetReadDeadline(t time.Time) error {
 	return nil
 }
 
-func (c *testConn) SetWriteTimeout(nsec int64) error {
+func (c *testConn) SetWriteDeadline(t time.Time) error {
 	return nil
 }
 
@@ -642,7 +642,7 @@ func TestServerExpect(t *testing.T) {
 		// Note using r.FormValue("readbody") because for POST
 		// requests that would read from r.Body, which we only
 		// conditionally want to do.
-		if strings.Contains(r.URL.RawPath, "readbody=true") {
+		if strings.Contains(r.URL.RawQuery, "readbody=true") {
 			ioutil.ReadAll(r.Body)
 			w.Write([]byte("Hi"))
 		} else {
@@ -904,17 +904,13 @@ func testHandlerPanic(t *testing.T, withHijack bool) {
 		panic("intentional death for testing")
 	}))
 	defer ts.Close()
-	_, err := Get(ts.URL)
-	if err == nil {
-		t.Logf("expected an error")
-	}
 
 	// Do a blocking read on the log output pipe so its logging
 	// doesn't bleed into the next test.  But wait only 5 seconds
 	// for it.
-	done := make(chan bool)
+	done := make(chan bool, 1)
 	go func() {
-		buf := make([]byte, 1024)
+		buf := make([]byte, 4<<10)
 		_, err := pr.Read(buf)
 		pr.Close()
 		if err != nil {
@@ -922,6 +918,12 @@ func testHandlerPanic(t *testing.T, withHijack bool) {
 		}
 		done <- true
 	}()
+
+	_, err := Get(ts.URL)
+	if err == nil {
+		t.Logf("expected an error")
+	}
+
 	select {
 	case <-done:
 		return
diff --git a/libgo/go/net/http/server.go b/libgo/go/net/http/server.go
index fa9009517db..bad3bcb2896 100644
--- a/libgo/go/net/http/server.go
+++ b/libgo/go/net/http/server.go
@@ -569,14 +569,15 @@ func (c *conn) serve() {
 		if err == nil {
 			return
 		}
-		if c.rwc != nil { // may be nil if connection hijacked
-			c.rwc.Close()
-		}
 
 		var buf bytes.Buffer
 		fmt.Fprintf(&buf, "http: panic serving %v: %v\n", c.remoteAddr, err)
 		buf.Write(debug.Stack())
 		log.Print(buf.String())
+
+		if c.rwc != nil { // may be nil if connection hijacked
+			c.rwc.Close()
+		}
 	}()
 
 	if tlsConn, ok := c.rwc.(*tls.Conn); ok {
@@ -954,8 +955,8 @@ func Serve(l net.Listener, handler Handler) error {
 type Server struct {
 	Addr           string        // TCP address to listen on, ":http" if empty
 	Handler        Handler       // handler to invoke, http.DefaultServeMux if nil
-	ReadTimeout    time.Duration // the net.Conn.SetReadTimeout value for new connections
-	WriteTimeout   time.Duration // the net.Conn.SetWriteTimeout value for new connections
+	ReadTimeout    time.Duration // maximum duration before timing out read of the request
+	WriteTimeout   time.Duration // maximum duration before timing out write of the response
 	MaxHeaderBytes int           // maximum size of request headers, DefaultMaxHeaderBytes if 0
 }
 
@@ -989,10 +990,10 @@ func (srv *Server) Serve(l net.Listener) error {
 			return e
 		}
 		if srv.ReadTimeout != 0 {
-			rw.SetReadTimeout(srv.ReadTimeout.Nanoseconds())
+			rw.SetReadDeadline(time.Now().Add(srv.ReadTimeout))
 		}
 		if srv.WriteTimeout != 0 {
-			rw.SetWriteTimeout(srv.WriteTimeout.Nanoseconds())
+			rw.SetWriteDeadline(time.Now().Add(srv.WriteTimeout))
 		}
 		c, err := srv.newConn(rw)
 		if err != nil {
diff --git a/libgo/go/net/http/transport.go b/libgo/go/net/http/transport.go
index 33ad32861b5..1b9ad1b85c5 100644
--- a/libgo/go/net/http/transport.go
+++ b/libgo/go/net/http/transport.go
@@ -229,9 +229,8 @@ func (cm *connectMethod) proxyAuth() string {
 	if cm.proxyURL == nil {
 		return ""
 	}
-	proxyInfo := cm.proxyURL.RawUserinfo
-	if proxyInfo != "" {
-		return "Basic " + base64.URLEncoding.EncodeToString([]byte(proxyInfo))
+	if u := cm.proxyURL.User; u != nil {
+		return "Basic " + base64.URLEncoding.EncodeToString([]byte(u.String()))
 	}
 	return ""
 }
@@ -332,7 +331,7 @@ func (t *Transport) getConn(cm *connectMethod) (*persistConn, error) {
 	case cm.targetScheme == "https":
 		connectReq := &Request{
 			Method: "CONNECT",
-			URL:    &url.URL{RawPath: cm.targetAddr},
+			URL:    &url.URL{Opaque: cm.targetAddr},
 			Host:   cm.targetAddr,
 			Header: make(Header),
 		}
diff --git a/libgo/go/net/ipraw_test.go b/libgo/go/net/ipraw_test.go
index 67a4049d5d3..c74bfcd6c79 100644
--- a/libgo/go/net/ipraw_test.go
+++ b/libgo/go/net/ipraw_test.go
@@ -12,6 +12,7 @@ import (
 	"flag"
 	"os"
 	"testing"
+	"time"
 )
 
 const ICMP_ECHO_REQUEST = 8
@@ -101,7 +102,7 @@ func TestICMP(t *testing.T) {
 		t.Fatalf(`net.WriteToIP(..., %v) = %v, %v`, raddr, n, err)
 	}
 
-	c.SetTimeout(100e6)
+	c.SetDeadline(time.Now().Add(100 * time.Millisecond))
 	resp := make([]byte, 1024)
 	for {
 		n, from, err := c.ReadFrom(resp)
diff --git a/libgo/go/net/iprawsock_plan9.go b/libgo/go/net/iprawsock_plan9.go
index 3fd9dce05e4..58df607e3be 100644
--- a/libgo/go/net/iprawsock_plan9.go
+++ b/libgo/go/net/iprawsock_plan9.go
@@ -8,12 +8,28 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // IPConn is the implementation of the Conn and PacketConn
 // interfaces for IP network connections.
 type IPConn bool
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *IPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *IPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *IPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // Implementation of the Conn interface - see Conn for documentation.
 
 // Read implements the net.Conn Read method.
@@ -41,21 +57,6 @@ func (c *IPConn) RemoteAddr() Addr {
 	return nil
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *IPConn) SetTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *IPConn) SetReadTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *IPConn) SetWriteTimeout(nsec int64) error {
-	return os.EPLAN9
-}
-
 // IP-specific methods.
 
 // ReadFrom implements the net.PacketConn ReadFrom method.
@@ -68,7 +69,7 @@ func (c *IPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToIP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (n int, err error) {
 	return 0, os.EPLAN9
diff --git a/libgo/go/net/iprawsock_posix.go b/libgo/go/net/iprawsock_posix.go
index 103c4f6a925..e4f755bc785 100644
--- a/libgo/go/net/iprawsock_posix.go
+++ b/libgo/go/net/iprawsock_posix.go
@@ -12,6 +12,7 @@ import (
 	"errors"
 	"os"
 	"syscall"
+	"time"
 )
 
 func sockaddrToIP(sa syscall.Sockaddr) Addr {
@@ -97,28 +98,28 @@ func (c *IPConn) RemoteAddr() Addr {
 	return c.fd.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *IPConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *IPConn) SetDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setTimeout(c.fd, nsec)
+	return setDeadline(c.fd, t)
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *IPConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *IPConn) SetReadDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setReadTimeout(c.fd, nsec)
+	return setReadDeadline(c.fd, t)
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *IPConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *IPConn) SetWriteDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setWriteTimeout(c.fd, nsec)
+	return setWriteDeadline(c.fd, t)
 }
 
 // SetReadBuffer sets the size of the operating system's
@@ -146,8 +147,8 @@ func (c *IPConn) SetWriteBuffer(bytes int) error {
 // that was on the packet.
 //
 // ReadFromIP can be made to time out and return an error with
-// Timeout() == true after a fixed time limit; see SetTimeout and
-// SetReadTimeout.
+// Timeout() == true after a fixed time limit; see SetDeadline and
+// SetReadDeadline.
 func (c *IPConn) ReadFromIP(b []byte) (n int, addr *IPAddr, err error) {
 	if !c.ok() {
 		return 0, nil, os.EINVAL
@@ -182,7 +183,7 @@ func (c *IPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToIP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (n int, err error) {
 	if !c.ok() {
diff --git a/libgo/go/net/ipsock_plan9.go b/libgo/go/net/ipsock_plan9.go
index 42fb408041a..09d8d6b4e04 100644
--- a/libgo/go/net/ipsock_plan9.go
+++ b/libgo/go/net/ipsock_plan9.go
@@ -10,6 +10,7 @@ import (
 	"errors"
 	"io"
 	"os"
+	"time"
 )
 
 // probeIPv6Stack returns two boolean values.  If the first boolean value is
@@ -156,27 +157,18 @@ func (c *plan9Conn) RemoteAddr() Addr {
 	return c.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *plan9Conn) SetTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *plan9Conn) SetDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *plan9Conn) SetReadTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *plan9Conn) SetReadDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *plan9Conn) SetWriteTimeout(nsec int64) error {
-	if !c.ok() {
-		return os.EINVAL
-	}
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *plan9Conn) SetWriteDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
diff --git a/libgo/go/net/ipsock_posix.go b/libgo/go/net/ipsock_posix.go
index 45fe0d9640b..3a059f516bc 100644
--- a/libgo/go/net/ipsock_posix.go
+++ b/libgo/go/net/ipsock_posix.go
@@ -101,7 +101,7 @@ type sockaddr interface {
 	family() int
 }
 
-func internetSocket(net string, laddr, raddr sockaddr, socktype, proto int, mode string, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
+func internetSocket(net string, laddr, raddr sockaddr, sotype, proto int, mode string, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
 	var oserr error
 	var la, ra syscall.Sockaddr
 	family := favoriteAddrFamily(net, raddr, laddr, mode)
@@ -115,7 +115,7 @@ func internetSocket(net string, laddr, raddr sockaddr, socktype, proto int, mode
 			goto Error
 		}
 	}
-	fd, oserr = socket(net, family, socktype, proto, la, ra, toAddr)
+	fd, oserr = socket(net, family, sotype, proto, la, ra, toAddr)
 	if oserr != nil {
 		goto Error
 	}
diff --git a/libgo/go/net/lookup_plan9.go b/libgo/go/net/lookup_plan9.go
index 027794a5e4b..645aa6d2493 100644
--- a/libgo/go/net/lookup_plan9.go
+++ b/libgo/go/net/lookup_plan9.go
@@ -69,9 +69,7 @@ func queryDNS(addr string, typ string) (res []string, err error) {
 	return query("/net/dns", addr+" "+typ, 1024)
 }
 
-// LookupHost looks up the given host using the local resolver.
-// It returns an array of that host's addresses.
-func LookupHost(host string) (addrs []string, err error) {
+func lookupHost(host string) (addrs []string, err error) {
 	// Use /net/cs insead of /net/dns because cs knows about
 	// host names in local network (e.g. from /lib/ndb/local)
 	lines, err := queryCS("tcp", host, "1")
@@ -95,9 +93,7 @@ func LookupHost(host string) (addrs []string, err error) {
 	return
 }
 
-// LookupIP looks up host using the local resolver.
-// It returns an array of that host's IPv4 and IPv6 addresses.
-func LookupIP(host string) (ips []IP, err error) {
+func lookupIP(host string) (ips []IP, err error) {
 	addrs, err := LookupHost(host)
 	if err != nil {
 		return
@@ -110,8 +106,7 @@ func LookupIP(host string) (ips []IP, err error) {
 	return
 }
 
-// LookupPort looks up the port for the given network and service.
-func LookupPort(network, service string) (port int, err error) {
+func lookupPort(network, service string) (port int, err error) {
 	switch network {
 	case "tcp4", "tcp6":
 		network = "tcp"
@@ -140,11 +135,7 @@ func LookupPort(network, service string) (port int, err error) {
 	return 0, unknownPortError
 }
 
-// LookupCNAME returns the canonical DNS host for the given name.
-// Callers that do not care about the canonical name can call
-// LookupHost or LookupIP directly; both take care of resolving
-// the canonical name as part of the lookup.
-func LookupCNAME(name string) (cname string, err error) {
+func lookupCNAME(name string) (cname string, err error) {
 	lines, err := queryDNS(name, "cname")
 	if err != nil {
 		return
@@ -157,16 +148,7 @@ func LookupCNAME(name string) (cname string, err error) {
 	return "", errors.New("net: bad response from ndb/dns")
 }
 
-// LookupSRV tries to resolve an SRV query of the given service,
-// protocol, and domain name.  The proto is "tcp" or "udp".
-// The returned records are sorted by priority and randomized
-// by weight within a priority.
-//
-// LookupSRV constructs the DNS name to look up following RFC 2782.
-// That is, it looks up _service._proto.name.  To accommodate services
-// publishing SRV records under non-standard names, if both service
-// and proto are empty strings, LookupSRV looks up name directly.
-func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
+func lookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
 	var target string
 	if service == "" && proto == "" {
 		target = name
@@ -195,8 +177,7 @@ func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err err
 	return
 }
 
-// LookupMX returns the DNS MX records for the given domain name sorted by preference.
-func LookupMX(name string) (mx []*MX, err error) {
+func lookupMX(name string) (mx []*MX, err error) {
 	lines, err := queryDNS(name, "mx")
 	if err != nil {
 		return
@@ -214,8 +195,7 @@ func LookupMX(name string) (mx []*MX, err error) {
 	return
 }
 
-// LookupTXT returns the DNS TXT records for the given domain name.
-func LookupTXT(name string) (txt []string, err error) {
+func lookupTXT(name string) (txt []string, err error) {
 	lines, err := queryDNS(name, "txt")
 	if err != nil {
 		return
@@ -228,9 +208,7 @@ func LookupTXT(name string) (txt []string, err error) {
 	return
 }
 
-// LookupAddr performs a reverse lookup for the given address, returning a list
-// of names mapping to that address.
-func LookupAddr(addr string) (name []string, err error) {
+func lookupAddr(addr string) (name []string, err error) {
 	arpa, err := reverseaddr(addr)
 	if err != nil {
 		return
diff --git a/libgo/go/net/lookup_unix.go b/libgo/go/net/lookup_unix.go
index 5c475477b83..d500a1240d4 100644
--- a/libgo/go/net/lookup_unix.go
+++ b/libgo/go/net/lookup_unix.go
@@ -52,9 +52,7 @@ func lookupProtocol(name string) (proto int, err error) {
 	return
 }
 
-// LookupHost looks up the given host using the local resolver.
-// It returns an array of that host's addresses.
-func LookupHost(host string) (addrs []string, err error) {
+func lookupHost(host string) (addrs []string, err error) {
 	addrs, err, ok := cgoLookupHost(host)
 	if !ok {
 		addrs, err = goLookupHost(host)
@@ -62,9 +60,7 @@ func LookupHost(host string) (addrs []string, err error) {
 	return
 }
 
-// LookupIP looks up host using the local resolver.
-// It returns an array of that host's IPv4 and IPv6 addresses.
-func LookupIP(host string) (addrs []IP, err error) {
+func lookupIP(host string) (addrs []IP, err error) {
 	addrs, err, ok := cgoLookupIP(host)
 	if !ok {
 		addrs, err = goLookupIP(host)
@@ -72,8 +68,7 @@ func LookupIP(host string) (addrs []IP, err error) {
 	return
 }
 
-// LookupPort looks up the port for the given network and service.
-func LookupPort(network, service string) (port int, err error) {
+func lookupPort(network, service string) (port int, err error) {
 	port, err, ok := cgoLookupPort(network, service)
 	if !ok {
 		port, err = goLookupPort(network, service)
@@ -81,11 +76,7 @@ func LookupPort(network, service string) (port int, err error) {
 	return
 }
 
-// LookupCNAME returns the canonical DNS host for the given name.
-// Callers that do not care about the canonical name can call
-// LookupHost or LookupIP directly; both take care of resolving
-// the canonical name as part of the lookup.
-func LookupCNAME(name string) (cname string, err error) {
+func lookupCNAME(name string) (cname string, err error) {
 	cname, err, ok := cgoLookupCNAME(name)
 	if !ok {
 		cname, err = goLookupCNAME(name)
@@ -93,16 +84,7 @@ func LookupCNAME(name string) (cname string, err error) {
 	return
 }
 
-// LookupSRV tries to resolve an SRV query of the given service,
-// protocol, and domain name.  The proto is "tcp" or "udp".
-// The returned records are sorted by priority and randomized
-// by weight within a priority.
-//
-// LookupSRV constructs the DNS name to look up following RFC 2782.
-// That is, it looks up _service._proto.name.  To accommodate services
-// publishing SRV records under non-standard names, if both service
-// and proto are empty strings, LookupSRV looks up name directly.
-func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
+func lookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
 	var target string
 	if service == "" && proto == "" {
 		target = name
@@ -123,8 +105,7 @@ func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err err
 	return
 }
 
-// LookupMX returns the DNS MX records for the given domain name sorted by preference.
-func LookupMX(name string) (mx []*MX, err error) {
+func lookupMX(name string) (mx []*MX, err error) {
 	_, records, err := lookup(name, dnsTypeMX)
 	if err != nil {
 		return
@@ -138,8 +119,7 @@ func LookupMX(name string) (mx []*MX, err error) {
 	return
 }
 
-// LookupTXT returns the DNS TXT records for the given domain name.
-func LookupTXT(name string) (txt []string, err error) {
+func lookupTXT(name string) (txt []string, err error) {
 	_, records, err := lookup(name, dnsTypeTXT)
 	if err != nil {
 		return
@@ -151,9 +131,7 @@ func LookupTXT(name string) (txt []string, err error) {
 	return
 }
 
-// LookupAddr performs a reverse lookup for the given address, returning a list
-// of names mapping to that address.
-func LookupAddr(addr string) (name []string, err error) {
+func lookupAddr(addr string) (name []string, err error) {
 	name = lookupStaticAddr(addr)
 	if len(name) > 0 {
 		return
diff --git a/libgo/go/net/lookup_windows.go b/libgo/go/net/lookup_windows.go
index 51afbd4bb85..dfe2ff6f1fa 100644
--- a/libgo/go/net/lookup_windows.go
+++ b/libgo/go/net/lookup_windows.go
@@ -28,7 +28,7 @@ func lookupProtocol(name string) (proto int, err error) {
 	return int(p.Proto), nil
 }
 
-func LookupHost(name string) (addrs []string, err error) {
+func lookupHost(name string) (addrs []string, err error) {
 	ips, err := LookupIP(name)
 	if err != nil {
 		return
@@ -40,7 +40,7 @@ func LookupHost(name string) (addrs []string, err error) {
 	return
 }
 
-func LookupIP(name string) (addrs []IP, err error) {
+func lookupIP(name string) (addrs []IP, err error) {
 	hostentLock.Lock()
 	defer hostentLock.Unlock()
 	h, e := syscall.GetHostByName(name)
@@ -61,7 +61,7 @@ func LookupIP(name string) (addrs []IP, err error) {
 	return addrs, nil
 }
 
-func LookupPort(network, service string) (port int, err error) {
+func lookupPort(network, service string) (port int, err error) {
 	switch network {
 	case "tcp4", "tcp6":
 		network = "tcp"
@@ -77,7 +77,7 @@ func LookupPort(network, service string) (port int, err error) {
 	return int(syscall.Ntohs(s.Port)), nil
 }
 
-func LookupCNAME(name string) (cname string, err error) {
+func lookupCNAME(name string) (cname string, err error) {
 	var r *syscall.DNSRecord
 	e := syscall.DnsQuery(name, syscall.DNS_TYPE_CNAME, 0, nil, &r, nil)
 	if e != nil {
@@ -91,16 +91,7 @@ func LookupCNAME(name string) (cname string, err error) {
 	return
 }
 
-// LookupSRV tries to resolve an SRV query of the given service,
-// protocol, and domain name.  The proto is "tcp" or "udp".
-// The returned records are sorted by priority and randomized
-// by weight within a priority.
-//
-// LookupSRV constructs the DNS name to look up following RFC 2782.
-// That is, it looks up _service._proto.name.  To accommodate services
-// publishing SRV records under non-standard names, if both service
-// and proto are empty strings, LookupSRV looks up name directly.
-func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
+func lookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
 	var target string
 	if service == "" && proto == "" {
 		target = name
@@ -122,7 +113,7 @@ func LookupSRV(service, proto, name string) (cname string, addrs []*SRV, err err
 	return name, addrs, nil
 }
 
-func LookupMX(name string) (mx []*MX, err error) {
+func lookupMX(name string) (mx []*MX, err error) {
 	var r *syscall.DNSRecord
 	e := syscall.DnsQuery(name, syscall.DNS_TYPE_MX, 0, nil, &r, nil)
 	if e != nil {
@@ -138,7 +129,7 @@ func LookupMX(name string) (mx []*MX, err error) {
 	return mx, nil
 }
 
-func LookupTXT(name string) (txt []string, err error) {
+func lookupTXT(name string) (txt []string, err error) {
 	var r *syscall.DNSRecord
 	e := syscall.DnsQuery(name, syscall.DNS_TYPE_TEXT, 0, nil, &r, nil)
 	if e != nil {
@@ -156,7 +147,7 @@ func LookupTXT(name string) (txt []string, err error) {
 	return
 }
 
-func LookupAddr(addr string) (name []string, err error) {
+func lookupAddr(addr string) (name []string, err error) {
 	arpa, err := reverseaddr(addr)
 	if err != nil {
 		return nil, err
diff --git a/libgo/go/net/net.go b/libgo/go/net/net.go
index b236dfdb1dd..609fee242d0 100644
--- a/libgo/go/net/net.go
+++ b/libgo/go/net/net.go
@@ -9,7 +9,10 @@ package net
 // TODO(rsc):
 //	support for raw ethernet sockets
 
-import "errors"
+import (
+	"errors"
+	"time"
+)
 
 // Addr represents a network end point address.
 type Addr interface {
@@ -21,12 +24,12 @@ type Addr interface {
 type Conn interface {
 	// Read reads data from the connection.
 	// Read can be made to time out and return a net.Error with Timeout() == true
-	// after a fixed time limit; see SetTimeout and SetReadTimeout.
+	// after a fixed time limit; see SetDeadline and SetReadDeadline.
 	Read(b []byte) (n int, err error)
 
 	// Write writes data to the connection.
 	// Write can be made to time out and return a net.Error with Timeout() == true
-	// after a fixed time limit; see SetTimeout and SetWriteTimeout.
+	// after a fixed time limit; see SetDeadline and SetWriteDeadline.
 	Write(b []byte) (n int, err error)
 
 	// Close closes the connection.
@@ -38,21 +41,23 @@ type Conn interface {
 	// RemoteAddr returns the remote network address.
 	RemoteAddr() Addr
 
-	// SetTimeout sets the read and write deadlines associated
+	// SetDeadline sets the read and write deadlines associated
 	// with the connection.
-	SetTimeout(nsec int64) error
-
-	// SetReadTimeout sets the time (in nanoseconds) that
-	// Read will wait for data before returning an error with Timeout() == true.
-	// Setting nsec == 0 (the default) disables the deadline.
-	SetReadTimeout(nsec int64) error
-
-	// SetWriteTimeout sets the time (in nanoseconds) that
-	// Write will wait to send its data before returning an error with Timeout() == true.
-	// Setting nsec == 0 (the default) disables the deadline.
+	SetDeadline(t time.Time) error
+
+	// SetReadDeadline sets the deadline for all Read calls to return.
+	// If the deadline is reached, Read will fail with a timeout
+	// (see type Error) instead of blocking.
+	// A zero value for t means Read will not time out.
+	SetReadDeadline(t time.Time) error
+
+	// SetWriteDeadline sets the deadline for all Write calls to return.
+	// If the deadline is reached, Write will fail with a timeout
+	// (see type Error) instead of blocking.
+	// A zero value for t means Write will not time out.
 	// Even if write times out, it may return n > 0, indicating that
 	// some of the data was successfully written.
-	SetWriteTimeout(nsec int64) error
+	SetWriteDeadline(t time.Time) error
 }
 
 // An Error represents a network error.
@@ -70,13 +75,13 @@ type PacketConn interface {
 	// was on the packet.
 	// ReadFrom can be made to time out and return
 	// an error with Timeout() == true after a fixed time limit;
-	// see SetTimeout and SetReadTimeout.
+	// see SetDeadline and SetReadDeadline.
 	ReadFrom(b []byte) (n int, addr Addr, err error)
 
 	// WriteTo writes a packet with payload b to addr.
 	// WriteTo can be made to time out and return
 	// an error with Timeout() == true after a fixed time limit;
-	// see SetTimeout and SetWriteTimeout.
+	// see SetDeadline and SetWriteDeadline.
 	// On packet-oriented connections, write timeouts are rare.
 	WriteTo(b []byte, addr Addr) (n int, err error)
 
@@ -86,21 +91,23 @@ type PacketConn interface {
 	// LocalAddr returns the local network address.
 	LocalAddr() Addr
 
-	// SetTimeout sets the read and write deadlines associated
+	// SetDeadline sets the read and write deadlines associated
 	// with the connection.
-	SetTimeout(nsec int64) error
-
-	// SetReadTimeout sets the time (in nanoseconds) that
-	// Read will wait for data before returning an error with Timeout() == true.
-	// Setting nsec == 0 (the default) disables the deadline.
-	SetReadTimeout(nsec int64) error
-
-	// SetWriteTimeout sets the time (in nanoseconds) that
-	// Write will wait to send its data before returning an error with Timeout() == true.
-	// Setting nsec == 0 (the default) disables the deadline.
+	SetDeadline(t time.Time) error
+
+	// SetReadDeadline sets the deadline for all Read calls to return.
+	// If the deadline is reached, Read will fail with a timeout
+	// (see type Error) instead of blocking.
+	// A zero value for t means Read will not time out.
+	SetReadDeadline(t time.Time) error
+
+	// SetWriteDeadline sets the deadline for all Write calls to return.
+	// If the deadline is reached, Write will fail with a timeout
+	// (see type Error) instead of blocking.
+	// A zero value for t means Write will not time out.
 	// Even if write times out, it may return n > 0, indicating that
 	// some of the data was successfully written.
-	SetWriteTimeout(nsec int64) error
+	SetWriteDeadline(t time.Time) error
 }
 
 // A Listener is a generic network listener for stream-oriented protocols.
diff --git a/libgo/go/net/pipe.go b/libgo/go/net/pipe.go
index 0ce7ccb9d7b..f1a2eca4e88 100644
--- a/libgo/go/net/pipe.go
+++ b/libgo/go/net/pipe.go
@@ -7,6 +7,7 @@ package net
 import (
 	"errors"
 	"io"
+	"time"
 )
 
 // Pipe creates a synchronous, in-memory, full duplex
@@ -53,14 +54,14 @@ func (p *pipe) RemoteAddr() Addr {
 	return pipeAddr(0)
 }
 
-func (p *pipe) SetTimeout(nsec int64) error {
-	return errors.New("net.Pipe does not support timeouts")
+func (p *pipe) SetDeadline(t time.Time) error {
+	return errors.New("net.Pipe does not support deadlines")
 }
 
-func (p *pipe) SetReadTimeout(nsec int64) error {
-	return errors.New("net.Pipe does not support timeouts")
+func (p *pipe) SetReadDeadline(t time.Time) error {
+	return errors.New("net.Pipe does not support deadlines")
 }
 
-func (p *pipe) SetWriteTimeout(nsec int64) error {
-	return errors.New("net.Pipe does not support timeouts")
+func (p *pipe) SetWriteDeadline(t time.Time) error {
+	return errors.New("net.Pipe does not support deadlines")
 }
diff --git a/libgo/go/net/sendfile_linux.go b/libgo/go/net/sendfile_linux.go
index 350abe451f3..e9ab066663e 100644
--- a/libgo/go/net/sendfile_linux.go
+++ b/libgo/go/net/sendfile_linux.go
@@ -40,15 +40,6 @@ func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 	defer c.wio.Unlock()
 	c.incref()
 	defer c.decref()
-	if c.wdeadline_delta > 0 {
-		// This is a little odd that we're setting the timeout
-		// for the entire file but Write has the same issue
-		// (if one slurps the whole file into memory and
-		// do one large Write). At least they're consistent.
-		c.wdeadline = pollserver.Now() + c.wdeadline_delta
-	} else {
-		c.wdeadline = 0
-	}
 
 	dst := c.sysfd
 	src := f.Fd()
diff --git a/libgo/go/net/server_test.go b/libgo/go/net/server_test.go
index 5475d3874fe..b0b546be32b 100644
--- a/libgo/go/net/server_test.go
+++ b/libgo/go/net/server_test.go
@@ -11,6 +11,7 @@ import (
 	"runtime"
 	"strings"
 	"testing"
+	"time"
 )
 
 // Do not test empty datagrams by default.
@@ -63,7 +64,7 @@ func connect(t *testing.T, network, addr string, isEmpty bool) {
 	if err != nil {
 		t.Fatalf("net.Dial(%q, %q) = _, %v", network, addr, err)
 	}
-	fd.SetReadTimeout(1e9) // 1s
+	fd.SetReadDeadline(time.Now().Add(1 * time.Second))
 
 	var b []byte
 	if !isEmpty {
@@ -91,7 +92,7 @@ func connect(t *testing.T, network, addr string, isEmpty bool) {
 }
 
 func doTest(t *testing.T, network, listenaddr, dialaddr string) {
-	t.Logf("Test %q %q %q\n", network, listenaddr, dialaddr)
+	t.Logf("Test %q %q %q", network, listenaddr, dialaddr)
 	switch listenaddr {
 	case "", "0.0.0.0", "[::]", "[::ffff:0.0.0.0]":
 		if testing.Short() || avoidMacFirewall {
@@ -169,10 +170,10 @@ func runPacket(t *testing.T, network, addr string, listening chan<- string, done
 		t.Fatalf("net.ListenPacket(%q, %q) = _, %v", network, addr, err)
 	}
 	listening <- c.LocalAddr().String()
-	c.SetReadTimeout(10e6) // 10ms
 	var buf [1000]byte
 Run:
 	for {
+		c.SetReadDeadline(time.Now().Add(10 * time.Millisecond))
 		n, addr, err := c.ReadFrom(buf[0:])
 		if e, ok := err.(Error); ok && e.Timeout() {
 			select {
@@ -194,7 +195,7 @@ Run:
 }
 
 func doTestPacket(t *testing.T, network, listenaddr, dialaddr string, isEmpty bool) {
-	t.Logf("TestPacket %s %s %s\n", network, listenaddr, dialaddr)
+	t.Logf("TestPacket %q %q %q", network, listenaddr, dialaddr)
 	listening := make(chan string)
 	done := make(chan int)
 	if network == "udp" {
diff --git a/libgo/go/net/smtp/auth.go b/libgo/go/net/smtp/auth.go
index 6f0cde0d283..d401e3c21fd 100644
--- a/libgo/go/net/smtp/auth.go
+++ b/libgo/go/net/smtp/auth.go
@@ -6,6 +6,7 @@ package smtp
 
 import (
 	"crypto/hmac"
+	"crypto/md5"
 	"errors"
 	"fmt"
 )
@@ -88,7 +89,7 @@ func (a *cramMD5Auth) Start(server *ServerInfo) (string, []byte, error) {
 
 func (a *cramMD5Auth) Next(fromServer []byte, more bool) ([]byte, error) {
 	if more {
-		d := hmac.NewMD5([]byte(a.secret))
+		d := hmac.New(md5.New, []byte(a.secret))
 		d.Write(fromServer)
 		s := make([]byte, 0, d.Size())
 		return []byte(fmt.Sprintf("%s %x", a.username, d.Sum(s))), nil
diff --git a/libgo/go/net/sock.go b/libgo/go/net/sock.go
index 881c922a25f..2f3210b4288 100644
--- a/libgo/go/net/sock.go
+++ b/libgo/go/net/sock.go
@@ -17,10 +17,10 @@ import (
 var listenerBacklog = maxListenerBacklog()
 
 // Generic socket creation.
-func socket(net string, f, p, t int, la, ra syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
+func socket(net string, f, t, p int, la, ra syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err error) {
 	// See ../syscall/exec.go for description of ForkLock.
 	syscall.ForkLock.RLock()
-	s, e := syscall.Socket(f, p, t)
+	s, err := syscall.Socket(f, t, p)
 	if err != nil {
 		syscall.ForkLock.RUnlock()
 		return nil, err
@@ -28,17 +28,17 @@ func socket(net string, f, p, t int, la, ra syscall.Sockaddr, toAddr func(syscal
 	syscall.CloseOnExec(s)
 	syscall.ForkLock.RUnlock()
 
-	setDefaultSockopts(s, f, p)
+	setDefaultSockopts(s, f, t)
 
 	if la != nil {
-		e = syscall.Bind(s, la)
-		if e != nil {
+		err = syscall.Bind(s, la)
+		if err != nil {
 			closesocket(s)
-			return nil, e
+			return nil, err
 		}
 	}
 
-	if fd, err = newFD(s, f, p, net); err != nil {
+	if fd, err = newFD(s, f, t, net); err != nil {
 		closesocket(s)
 		return nil, err
 	}
diff --git a/libgo/go/net/sockopt.go b/libgo/go/net/sockopt.go
index 7fa1052b120..59f9af5f30a 100644
--- a/libgo/go/net/sockopt.go
+++ b/libgo/go/net/sockopt.go
@@ -12,6 +12,7 @@ import (
 	"bytes"
 	"os"
 	"syscall"
+	"time"
 )
 
 // Boolean to int.
@@ -115,21 +116,21 @@ func setWriteBuffer(fd *netFD, bytes int) error {
 	return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_SNDBUF, bytes))
 }
 
-func setReadTimeout(fd *netFD, nsec int64) error {
-	fd.rdeadline_delta = nsec
+func setReadDeadline(fd *netFD, t time.Time) error {
+	fd.rdeadline = t.UnixNano()
 	return nil
 }
 
-func setWriteTimeout(fd *netFD, nsec int64) error {
-	fd.wdeadline_delta = nsec
+func setWriteDeadline(fd *netFD, t time.Time) error {
+	fd.wdeadline = t.UnixNano()
 	return nil
 }
 
-func setTimeout(fd *netFD, nsec int64) error {
-	if e := setReadTimeout(fd, nsec); e != nil {
+func setDeadline(fd *netFD, t time.Time) error {
+	if e := setReadDeadline(fd, t); e != nil {
 		return e
 	}
-	return setWriteTimeout(fd, nsec)
+	return setWriteDeadline(fd, t)
 }
 
 func setReuseAddr(fd *netFD, reuse bool) error {
diff --git a/libgo/go/net/sockopt_bsd.go b/libgo/go/net/sockopt_bsd.go
index e99fb418cdd..2093e08127d 100644
--- a/libgo/go/net/sockopt_bsd.go
+++ b/libgo/go/net/sockopt_bsd.go
@@ -12,14 +12,15 @@ import (
 	"syscall"
 )
 
-func setDefaultSockopts(s, f, p int) {
+func setDefaultSockopts(s, f, t int) {
 	switch f {
 	case syscall.AF_INET6:
 		// Allow both IP versions even if the OS default is otherwise.
 		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, 0)
 	}
 
-	if f == syscall.AF_UNIX || p == syscall.IPPROTO_TCP {
+	if f == syscall.AF_UNIX ||
+		(f == syscall.AF_INET || f == syscall.AF_INET6) && t == syscall.SOCK_STREAM {
 		// Allow reuse of recently-used addresses.
 		syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
 
diff --git a/libgo/go/net/sockopt_linux.go b/libgo/go/net/sockopt_linux.go
index 51583844f1f..9dbb4e5dde4 100644
--- a/libgo/go/net/sockopt_linux.go
+++ b/libgo/go/net/sockopt_linux.go
@@ -10,14 +10,15 @@ import (
 	"syscall"
 )
 
-func setDefaultSockopts(s, f, p int) {
+func setDefaultSockopts(s, f, t int) {
 	switch f {
 	case syscall.AF_INET6:
 		// Allow both IP versions even if the OS default is otherwise.
 		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, 0)
 	}
 
-	if f == syscall.AF_UNIX || p == syscall.IPPROTO_TCP {
+	if f == syscall.AF_UNIX ||
+		(f == syscall.AF_INET || f == syscall.AF_INET6) && t == syscall.SOCK_STREAM {
 		// Allow reuse of recently-used addresses.
 		syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
 	}
diff --git a/libgo/go/net/sockopt_windows.go b/libgo/go/net/sockopt_windows.go
index 485c14a2d3e..a7b5606d865 100644
--- a/libgo/go/net/sockopt_windows.go
+++ b/libgo/go/net/sockopt_windows.go
@@ -10,7 +10,7 @@ import (
 	"syscall"
 )
 
-func setDefaultSockopts(s syscall.Handle, f, p int) {
+func setDefaultSockopts(s syscall.Handle, f, t int) {
 	switch f {
 	case syscall.AF_INET6:
 		// Allow both IP versions even if the OS default is otherwise.
diff --git a/libgo/go/net/tcpsock_plan9.go b/libgo/go/net/tcpsock_plan9.go
index 69fae036144..288ec056ab0 100644
--- a/libgo/go/net/tcpsock_plan9.go
+++ b/libgo/go/net/tcpsock_plan9.go
@@ -8,6 +8,7 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // TCPConn is an implementation of the Conn interface
@@ -16,6 +17,21 @@ type TCPConn struct {
 	plan9Conn
 }
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *TCPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *TCPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *TCPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // CloseRead shuts down the reading side of the TCP connection.
 // Most callers should just use Close.
 func (c *TCPConn) CloseRead() error {
diff --git a/libgo/go/net/tcpsock_posix.go b/libgo/go/net/tcpsock_posix.go
index a492e614e35..91816fa9d46 100644
--- a/libgo/go/net/tcpsock_posix.go
+++ b/libgo/go/net/tcpsock_posix.go
@@ -12,6 +12,7 @@ import (
 	"io"
 	"os"
 	"syscall"
+	"time"
 )
 
 // BUG(rsc): On OpenBSD, listening on the "tcp" network does not listen for
@@ -134,28 +135,28 @@ func (c *TCPConn) RemoteAddr() Addr {
 	return c.fd.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *TCPConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *TCPConn) SetDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setTimeout(c.fd, nsec)
+	return setDeadline(c.fd, t)
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *TCPConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *TCPConn) SetReadDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setReadTimeout(c.fd, nsec)
+	return setReadDeadline(c.fd, t)
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *TCPConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *TCPConn) SetWriteDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setWriteTimeout(c.fd, nsec)
+	return setWriteDeadline(c.fd, t)
 }
 
 // SetReadBuffer sets the size of the operating system's
@@ -294,12 +295,13 @@ func (l *TCPListener) Close() error {
 // Addr returns the listener's network address, a *TCPAddr.
 func (l *TCPListener) Addr() Addr { return l.fd.laddr }
 
-// SetTimeout sets the deadline associated with the listener
-func (l *TCPListener) SetTimeout(nsec int64) error {
+// SetDeadline sets the deadline associated with the listener.
+// A zero time value disables the deadline.
+func (l *TCPListener) SetDeadline(t time.Time) error {
 	if l == nil || l.fd == nil {
 		return os.EINVAL
 	}
-	return setTimeout(l.fd, nsec)
+	return setDeadline(l.fd, t)
 }
 
 // File returns a copy of the underlying os.File, set to blocking mode.
diff --git a/libgo/go/net/timeout_test.go b/libgo/go/net/timeout_test.go
index f6e5238c1b1..11db012ff57 100644
--- a/libgo/go/net/timeout_test.go
+++ b/libgo/go/net/timeout_test.go
@@ -5,6 +5,7 @@
 package net
 
 import (
+	"fmt"
 	"runtime"
 	"testing"
 	"time"
@@ -17,26 +18,41 @@ func testTimeout(t *testing.T, network, addr string, readFrom bool) {
 		return
 	}
 	defer fd.Close()
-	t0 := time.Now()
-	fd.SetReadTimeout(1e8) // 100ms
-	var b [100]byte
-	var n int
-	var err1 error
-	if readFrom {
-		n, _, err1 = fd.(PacketConn).ReadFrom(b[0:])
-	} else {
-		n, err1 = fd.Read(b[0:])
-	}
-	t1 := time.Now()
 	what := "Read"
 	if readFrom {
 		what = "ReadFrom"
 	}
-	if n != 0 || err1 == nil || !err1.(Error).Timeout() {
-		t.Errorf("fd.%s on %s %s did not return 0, timeout: %v, %v", what, network, addr, n, err1)
-	}
-	if dt := t1.Sub(t0); dt < 50*time.Millisecond || dt > 150*time.Millisecond {
-		t.Errorf("fd.%s on %s %s took %s, expected 0.1s", what, network, addr, dt)
+
+	errc := make(chan error, 1)
+	go func() {
+		t0 := time.Now()
+		fd.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
+		var b [100]byte
+		var n int
+		var err1 error
+		if readFrom {
+			n, _, err1 = fd.(PacketConn).ReadFrom(b[0:])
+		} else {
+			n, err1 = fd.Read(b[0:])
+		}
+		t1 := time.Now()
+		if n != 0 || err1 == nil || !err1.(Error).Timeout() {
+			errc <- fmt.Errorf("fd.%s on %s %s did not return 0, timeout: %v, %v", what, network, addr, n, err1)
+			return
+		}
+		if dt := t1.Sub(t0); dt < 50*time.Millisecond || dt > 250*time.Millisecond {
+			errc <- fmt.Errorf("fd.%s on %s %s took %s, expected 0.1s", what, network, addr, dt)
+			return
+		}
+		errc <- nil
+	}()
+	select {
+	case err := <-errc:
+		if err != nil {
+			t.Error(err)
+		}
+	case <-time.After(1 * time.Second):
+		t.Errorf("%s on %s %s took over 1 second, expected 0.1s", what, network, addr)
 	}
 }
 
diff --git a/libgo/go/net/udpsock_plan9.go b/libgo/go/net/udpsock_plan9.go
index 60dec812289..246c9ad94b5 100644
--- a/libgo/go/net/udpsock_plan9.go
+++ b/libgo/go/net/udpsock_plan9.go
@@ -9,6 +9,7 @@ package net
 import (
 	"errors"
 	"os"
+	"time"
 )
 
 // UDPConn is the implementation of the Conn and PacketConn
@@ -17,6 +18,21 @@ type UDPConn struct {
 	plan9Conn
 }
 
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UDPConn) SetDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UDPConn) SetReadDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UDPConn) SetWriteDeadline(t time.Time) error {
+	return os.EPLAN9
+}
+
 // UDP-specific methods.
 
 // ReadFromUDP reads a UDP packet from c, copying the payload into b.
@@ -24,7 +40,7 @@ type UDPConn struct {
 // that was on the packet.
 //
 // ReadFromUDP can be made to time out and return an error with Timeout() == true
-// after a fixed time limit; see SetTimeout and SetReadTimeout.
+// after a fixed time limit; see SetDeadline and SetReadDeadline.
 func (c *UDPConn) ReadFromUDP(b []byte) (n int, addr *UDPAddr, err error) {
 	if !c.ok() {
 		return 0, nil, os.EINVAL
@@ -62,7 +78,7 @@ func (c *UDPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToUDP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (n int, err error) {
 	if !c.ok() {
diff --git a/libgo/go/net/udpsock_posix.go b/libgo/go/net/udpsock_posix.go
index d0bdb14755e..0b5bc16f822 100644
--- a/libgo/go/net/udpsock_posix.go
+++ b/libgo/go/net/udpsock_posix.go
@@ -11,6 +11,7 @@ package net
 import (
 	"os"
 	"syscall"
+	"time"
 )
 
 func sockaddrToUDP(sa syscall.Sockaddr) Addr {
@@ -98,28 +99,28 @@ func (c *UDPConn) RemoteAddr() Addr {
 	return c.fd.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *UDPConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UDPConn) SetDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setTimeout(c.fd, nsec)
+	return setDeadline(c.fd, t)
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *UDPConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UDPConn) SetReadDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setReadTimeout(c.fd, nsec)
+	return setReadDeadline(c.fd, t)
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *UDPConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UDPConn) SetWriteDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setWriteTimeout(c.fd, nsec)
+	return setWriteDeadline(c.fd, t)
 }
 
 // SetReadBuffer sets the size of the operating system's
@@ -147,7 +148,7 @@ func (c *UDPConn) SetWriteBuffer(bytes int) error {
 // that was on the packet.
 //
 // ReadFromUDP can be made to time out and return an error with Timeout() == true
-// after a fixed time limit; see SetTimeout and SetReadTimeout.
+// after a fixed time limit; see SetDeadline and SetReadDeadline.
 func (c *UDPConn) ReadFromUDP(b []byte) (n int, addr *UDPAddr, err error) {
 	if !c.ok() {
 		return 0, nil, os.EINVAL
@@ -175,7 +176,7 @@ func (c *UDPConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToUDP can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (n int, err error) {
 	if !c.ok() {
diff --git a/libgo/go/net/unicast_test.go b/libgo/go/net/unicast_test.go
index 6ed6f59cdd6..297276d3a7f 100644
--- a/libgo/go/net/unicast_test.go
+++ b/libgo/go/net/unicast_test.go
@@ -5,6 +5,7 @@
 package net
 
 import (
+	"io"
 	"runtime"
 	"testing"
 )
@@ -15,10 +16,12 @@ var unicastTests = []struct {
 	ipv6   bool
 	packet bool
 }{
-	{"tcp4", "127.0.0.1:0", false, false},
-	{"tcp6", "[::1]:0", true, false},
-	{"udp4", "127.0.0.1:0", false, true},
-	{"udp6", "[::1]:0", true, true},
+	{net: "tcp4", laddr: "127.0.0.1:0"},
+	{net: "tcp4", laddr: "previous"},
+	{net: "tcp6", laddr: "[::1]:0", ipv6: true},
+	{net: "tcp6", laddr: "previous", ipv6: true},
+	{net: "udp4", laddr: "127.0.0.1:0", packet: true},
+	{net: "udp6", laddr: "[::1]:0", ipv6: true, packet: true},
 }
 
 func TestUnicastTCPAndUDP(t *testing.T) {
@@ -26,24 +29,32 @@ func TestUnicastTCPAndUDP(t *testing.T) {
 		return
 	}
 
+	prevladdr := ""
 	for _, tt := range unicastTests {
 		if tt.ipv6 && !supportsIPv6 {
 			continue
 		}
-		var fd *netFD
+		var (
+			fd     *netFD
+			closer io.Closer
+		)
 		if !tt.packet {
-			c, err := Listen(tt.net, tt.laddr)
+			if tt.laddr == "previous" {
+				tt.laddr = prevladdr
+			}
+			l, err := Listen(tt.net, tt.laddr)
 			if err != nil {
 				t.Fatalf("Listen failed: %v", err)
 			}
-			defer c.Close()
-			fd = c.(*TCPListener).fd
+			prevladdr = l.Addr().String()
+			closer = l
+			fd = l.(*TCPListener).fd
 		} else {
 			c, err := ListenPacket(tt.net, tt.laddr)
 			if err != nil {
 				t.Fatalf("ListenPacket failed: %v", err)
 			}
-			defer c.Close()
+			closer = c
 			fd = c.(*UDPConn).fd
 		}
 		if !tt.ipv6 {
@@ -51,6 +62,7 @@ func TestUnicastTCPAndUDP(t *testing.T) {
 		} else {
 			testIPv6UnicastSocketOptions(t, fd)
 		}
+		closer.Close()
 	}
 }
 
diff --git a/libgo/go/net/unixsock_plan9.go b/libgo/go/net/unixsock_plan9.go
index ac502d1d76a..e8087d09a36 100644
--- a/libgo/go/net/unixsock_plan9.go
+++ b/libgo/go/net/unixsock_plan9.go
@@ -8,6 +8,7 @@ package net
 
 import (
 	"os"
+	"time"
 )
 
 // UnixConn is an implementation of the Conn interface
@@ -44,18 +45,18 @@ func (c *UnixConn) RemoteAddr() Addr {
 	return nil
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *UnixConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UnixConn) SetDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *UnixConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UnixConn) SetReadDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *UnixConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UnixConn) SetWriteDeadline(t time.Time) error {
 	return os.EPLAN9
 }
 
diff --git a/libgo/go/net/unixsock_posix.go b/libgo/go/net/unixsock_posix.go
index 00ee0164f2e..5b8b2e4c7c6 100644
--- a/libgo/go/net/unixsock_posix.go
+++ b/libgo/go/net/unixsock_posix.go
@@ -11,19 +11,20 @@ package net
 import (
 	"os"
 	"syscall"
+	"time"
 )
 
 func unixSocket(net string, laddr, raddr *UnixAddr, mode string) (fd *netFD, err error) {
-	var proto int
+	var sotype int
 	switch net {
 	default:
 		return nil, UnknownNetworkError(net)
 	case "unix":
-		proto = syscall.SOCK_STREAM
+		sotype = syscall.SOCK_STREAM
 	case "unixgram":
-		proto = syscall.SOCK_DGRAM
+		sotype = syscall.SOCK_DGRAM
 	case "unixpacket":
-		proto = syscall.SOCK_SEQPACKET
+		sotype = syscall.SOCK_SEQPACKET
 	}
 
 	var la, ra syscall.Sockaddr
@@ -37,7 +38,7 @@ func unixSocket(net string, laddr, raddr *UnixAddr, mode string) (fd *netFD, err
 		}
 		if raddr != nil {
 			ra = &syscall.SockaddrUnix{Name: raddr.Name}
-		} else if proto != syscall.SOCK_DGRAM || laddr == nil {
+		} else if sotype != syscall.SOCK_DGRAM || laddr == nil {
 			return nil, &OpError{Op: mode, Net: net, Err: errMissingAddress}
 		}
 
@@ -52,13 +53,13 @@ func unixSocket(net string, laddr, raddr *UnixAddr, mode string) (fd *netFD, err
 	}
 
 	f := sockaddrToUnix
-	if proto == syscall.SOCK_DGRAM {
+	if sotype == syscall.SOCK_DGRAM {
 		f = sockaddrToUnixgram
-	} else if proto == syscall.SOCK_SEQPACKET {
+	} else if sotype == syscall.SOCK_SEQPACKET {
 		f = sockaddrToUnixpacket
 	}
 
-	fd, oserr := socket(net, syscall.AF_UNIX, proto, 0, la, ra, f)
+	fd, oserr := socket(net, syscall.AF_UNIX, sotype, 0, la, ra, f)
 	if oserr != nil {
 		goto Error
 	}
@@ -93,8 +94,8 @@ func sockaddrToUnixpacket(sa syscall.Sockaddr) Addr {
 	return nil
 }
 
-func protoToNet(proto int) string {
-	switch proto {
+func sotypeToNet(sotype int) string {
+	switch sotype {
 	case syscall.SOCK_STREAM:
 		return "unix"
 	case syscall.SOCK_SEQPACKET:
@@ -102,7 +103,7 @@ func protoToNet(proto int) string {
 	case syscall.SOCK_DGRAM:
 		return "unixgram"
 	default:
-		panic("protoToNet unknown protocol")
+		panic("sotypeToNet unknown socket type")
 	}
 	return ""
 }
@@ -164,28 +165,28 @@ func (c *UnixConn) RemoteAddr() Addr {
 	return c.fd.raddr
 }
 
-// SetTimeout implements the net.Conn SetTimeout method.
-func (c *UnixConn) SetTimeout(nsec int64) error {
+// SetDeadline implements the net.Conn SetDeadline method.
+func (c *UnixConn) SetDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setTimeout(c.fd, nsec)
+	return setDeadline(c.fd, t)
 }
 
-// SetReadTimeout implements the net.Conn SetReadTimeout method.
-func (c *UnixConn) SetReadTimeout(nsec int64) error {
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (c *UnixConn) SetReadDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setReadTimeout(c.fd, nsec)
+	return setReadDeadline(c.fd, t)
 }
 
-// SetWriteTimeout implements the net.Conn SetWriteTimeout method.
-func (c *UnixConn) SetWriteTimeout(nsec int64) error {
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (c *UnixConn) SetWriteDeadline(t time.Time) error {
 	if !c.ok() {
 		return os.EINVAL
 	}
-	return setWriteTimeout(c.fd, nsec)
+	return setWriteDeadline(c.fd, t)
 }
 
 // SetReadBuffer sets the size of the operating system's
@@ -212,7 +213,7 @@ func (c *UnixConn) SetWriteBuffer(bytes int) error {
 //
 // ReadFromUnix can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetReadTimeout.
+// see SetDeadline and SetReadDeadline.
 func (c *UnixConn) ReadFromUnix(b []byte) (n int, addr *UnixAddr, err error) {
 	if !c.ok() {
 		return 0, nil, os.EINVAL
@@ -220,7 +221,7 @@ func (c *UnixConn) ReadFromUnix(b []byte) (n int, addr *UnixAddr, err error) {
 	n, sa, err := c.fd.ReadFrom(b)
 	switch sa := sa.(type) {
 	case *syscall.SockaddrUnix:
-		addr = &UnixAddr{sa.Name, protoToNet(c.fd.proto)}
+		addr = &UnixAddr{sa.Name, sotypeToNet(c.fd.sotype)}
 	}
 	return
 }
@@ -238,13 +239,13 @@ func (c *UnixConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
 //
 // WriteToUnix can be made to time out and return
 // an error with Timeout() == true after a fixed time limit;
-// see SetTimeout and SetWriteTimeout.
+// see SetDeadline and SetWriteDeadline.
 // On packet-oriented connections, write timeouts are rare.
 func (c *UnixConn) WriteToUnix(b []byte, addr *UnixAddr) (n int, err error) {
 	if !c.ok() {
 		return 0, os.EINVAL
 	}
-	if addr.Net != protoToNet(c.fd.proto) {
+	if addr.Net != sotypeToNet(c.fd.sotype) {
 		return 0, os.EAFNOSUPPORT
 	}
 	sa := &syscall.SockaddrUnix{Name: addr.Name}
@@ -270,7 +271,7 @@ func (c *UnixConn) ReadMsgUnix(b, oob []byte) (n, oobn, flags int, addr *UnixAdd
 	n, oobn, flags, sa, err := c.fd.ReadMsg(b, oob)
 	switch sa := sa.(type) {
 	case *syscall.SockaddrUnix:
-		addr = &UnixAddr{sa.Name, protoToNet(c.fd.proto)}
+		addr = &UnixAddr{sa.Name, sotypeToNet(c.fd.sotype)}
 	}
 	return
 }
@@ -280,7 +281,7 @@ func (c *UnixConn) WriteMsgUnix(b, oob []byte, addr *UnixAddr) (n, oobn int, err
 		return 0, 0, os.EINVAL
 	}
 	if addr != nil {
-		if addr.Net != protoToNet(c.fd.proto) {
+		if addr.Net != sotypeToNet(c.fd.sotype) {
 			return 0, 0, os.EAFNOSUPPORT
 		}
 		sa := &syscall.SockaddrUnix{Name: addr.Name}
@@ -386,12 +387,13 @@ func (l *UnixListener) Close() error {
 // Addr returns the listener's network address.
 func (l *UnixListener) Addr() Addr { return l.fd.laddr }
 
-// SetTimeout sets the deadline associated wuth the listener
-func (l *UnixListener) SetTimeout(nsec int64) (err error) {
+// SetDeadline sets the deadline associated with the listener.
+// A zero time value disables the deadline.
+func (l *UnixListener) SetDeadline(t time.Time) (err error) {
 	if l == nil || l.fd == nil {
 		return os.EINVAL
 	}
-	return setTimeout(l.fd, nsec)
+	return setDeadline(l.fd, t)
 }
 
 // File returns a copy of the underlying os.File, set to blocking mode.
diff --git a/libgo/go/net/url/url.go b/libgo/go/net/url/url.go
index 11fa18961a1..0068e98affa 100644
--- a/libgo/go/net/url/url.go
+++ b/libgo/go/net/url/url.go
@@ -52,7 +52,6 @@ const (
 	encodeUserPassword
 	encodeQueryComponent
 	encodeFragment
-	encodeOpaque
 )
 
 type EscapeError string
@@ -69,6 +68,7 @@ func shouldEscape(c byte, mode encoding) bool {
 	if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
 		return false
 	}
+	// TODO: Update the character sets after RFC 3986.
 	switch c {
 	case '-', '_', '.', '!', '~', '*', '\'', '(', ')': // §2.3 Unreserved characters (mark)
 		return false
@@ -78,12 +78,10 @@ func shouldEscape(c byte, mode encoding) bool {
 		// the reserved characters to appear unescaped.
 		switch mode {
 		case encodePath: // §3.3
-			// The RFC allows : @ & = + $ , but saves / ; for assigning
-			// meaning to individual path segments.  This package
+			// The RFC allows : @ & = + $ but saves / ; , for assigning
+			// meaning to individual path segments. This package
 			// only manipulates the path as a whole, so we allow those
-			// last two as well.  Clients that need to distinguish between
-			// `/foo;y=z/bar` and `/foo%3by=z/bar` will have to re-decode RawPath.
-			// That leaves only ? to escape.
+			// last two as well. That leaves only ? to escape.
 			return c == '?'
 
 		case encodeUserPassword: // §3.2.2
@@ -99,12 +97,6 @@ func shouldEscape(c byte, mode encoding) bool {
 			// The RFC text is silent but the grammar allows
 			// everything, so escape nothing.
 			return false
-
-		case encodeOpaque: // §3 opaque_part
-			// The RFC allows opaque_part to use all characters
-			// except that the leading / must be escaped.
-			// (We implement that case in String.)
-			return false
 		}
 	}
 
@@ -217,64 +209,73 @@ func escape(s string, mode encoding) string {
 	return string(t)
 }
 
-// UnescapeUserinfo parses the RawUserinfo field of a URL
-// as the form user or user:password and unescapes and returns
-// the two halves.
+// A URL represents a parsed URL (technically, a URI reference).
+// The general form represented is:
 //
-// This functionality should only be used with legacy web sites.
-// RFC 2396 warns that interpreting Userinfo this way
-// ``is NOT RECOMMENDED, because the passing of authentication
-// information in clear text (such as URI) has proven to be a
-// security risk in almost every case where it has been used.''
-func UnescapeUserinfo(rawUserinfo string) (user, password string, err error) {
-	u, p := split(rawUserinfo, ':', true)
-	if user, err = unescape(u, encodeUserPassword); err != nil {
-		return "", "", err
-	}
-	if password, err = unescape(p, encodeUserPassword); err != nil {
-		return "", "", err
-	}
-	return
+//	scheme://[userinfo@]host/path[?query][#fragment]
+//
+// URLs that do not start with a slash after the scheme are interpreted as:
+//
+//	scheme:opaque[?query][#fragment]
+//
+type URL struct {
+	Scheme   string
+	Opaque   string    // encoded opaque data
+	User     *Userinfo // username and password information
+	Host     string
+	Path     string
+	RawQuery string // encoded query values, without '?'
+	Fragment string // fragment for references, without '#'
 }
 
-// EscapeUserinfo combines user and password in the form
-// user:password (or just user if password is empty) and then
-// escapes it for use as the URL.RawUserinfo field.
-//
+// User returns a Userinfo containing the provided username
+// and no password set.
+func User(username string) *Userinfo {
+	return &Userinfo{username, "", false}
+}
+
+// UserPassword returns a Userinfo containing the provided username
+// and password.
 // This functionality should only be used with legacy web sites.
 // RFC 2396 warns that interpreting Userinfo this way
 // ``is NOT RECOMMENDED, because the passing of authentication
 // information in clear text (such as URI) has proven to be a
 // security risk in almost every case where it has been used.''
-func EscapeUserinfo(user, password string) string {
-	raw := escape(user, encodeUserPassword)
-	if password != "" {
-		raw += ":" + escape(password, encodeUserPassword)
+func UserPassword(username, password string) *Userinfo {
+	return &Userinfo{username, password, true}
+}
+
+// The Userinfo type is an immutable encapsulation of username and
+// password details for a URL. An existing Userinfo value is guaranteed
+// to have a username set (potentially empty, as allowed by RFC 2396),
+// and optionally a password.
+type Userinfo struct {
+	username    string
+	password    string
+	passwordSet bool
+}
+
+// Username returns the username.
+func (u *Userinfo) Username() string {
+	return u.username
+}
+
+// Password returns the password in case it is set, and whether it is set.
+func (u *Userinfo) Password() (string, bool) {
+	if u.passwordSet {
+		return u.password, true
 	}
-	return raw
+	return "", false
 }
 
-// A URL represents a parsed URL (technically, a URI reference).
-// The general form represented is:
-//	scheme://[userinfo@]host/path[?query][#fragment]
-// The Raw, RawAuthority, RawPath, and RawQuery fields are in "wire format"
-// (special characters must be hex-escaped if not meant to have special meaning).
-// All other fields are logical values; '+' or '%' represent themselves.
-//
-// The various Raw values are supplied in wire format because
-// clients typically have to split them into pieces before further
-// decoding.
-type URL struct {
-	Raw          string // the original string
-	Scheme       string // scheme
-	RawAuthority string // [userinfo@]host
-	RawUserinfo  string // userinfo
-	Host         string // host
-	RawPath      string // /path[?query][#fragment]
-	Path         string // /path
-	OpaquePath   bool   // path is opaque (unrooted when scheme is present)
-	RawQuery     string // query
-	Fragment     string // fragment
+// String returns the encoded userinfo information in the standard form
+// of "username[:password]".
+func (u *Userinfo) String() string {
+	s := escape(u.username, encodeUserPassword)
+	if u.passwordSet {
+		s += ":" + escape(u.password, encodeUserPassword)
+	}
+	return s
 }
 
 // Maybe rawurl is of the form scheme:path.
@@ -341,136 +342,112 @@ func ParseRequest(rawurl string) (url *URL, err error) {
 // in which case only absolute URLs or path-absolute relative URLs are allowed.
 // If viaRequest is false, all forms of relative URLs are allowed.
 func parse(rawurl string, viaRequest bool) (url *URL, err error) {
-	var (
-		leadingSlash bool
-		path         string
-	)
+	var rest string
 
 	if rawurl == "" {
 		err = errors.New("empty url")
 		goto Error
 	}
 	url = new(URL)
-	url.Raw = rawurl
 
 	// Split off possible leading "http:", "mailto:", etc.
 	// Cannot contain escaped characters.
-	if url.Scheme, path, err = getscheme(rawurl); err != nil {
+	if url.Scheme, rest, err = getscheme(rawurl); err != nil {
 		goto Error
 	}
-	leadingSlash = strings.HasPrefix(path, "/")
 
-	if url.Scheme != "" && !leadingSlash {
-		// RFC 2396:
-		// Absolute URI (has scheme) with non-rooted path
-		// is uninterpreted.  It doesn't even have a ?query.
-		// This is the case that handles mailto:name@example.com.
-		url.RawPath = path
+	rest, url.RawQuery = split(rest, '?', true)
 
-		if url.Path, err = unescape(path, encodeOpaque); err != nil {
-			goto Error
+	if !strings.HasPrefix(rest, "/") {
+		if url.Scheme != "" {
+			// We consider rootless paths per RFC 3986 as opaque.
+			url.Opaque = rest
+			return url, nil
 		}
-		url.OpaquePath = true
-	} else {
-		if viaRequest && !leadingSlash {
+		if viaRequest {
 			err = errors.New("invalid URI for request")
 			goto Error
 		}
+	}
 
-		// Split off query before parsing path further.
-		url.RawPath = path
-		path, query := split(path, '?', false)
-		if len(query) > 1 {
-			url.RawQuery = query[1:]
-		}
-
-		// Maybe path is //authority/path
-		if (url.Scheme != "" || !viaRequest) &&
-			strings.HasPrefix(path, "//") && !strings.HasPrefix(path, "///") {
-			url.RawAuthority, path = split(path[2:], '/', false)
-			url.RawPath = url.RawPath[2+len(url.RawAuthority):]
-		}
-
-		// Split authority into userinfo@host.
-		// If there's no @, split's default is wrong.  Check explicitly.
-		var rawHost string
-		if strings.Index(url.RawAuthority, "@") < 0 {
-			rawHost = url.RawAuthority
-		} else {
-			url.RawUserinfo, rawHost = split(url.RawAuthority, '@', true)
-		}
-
-		// We leave RawAuthority only in raw form because clients
-		// of common protocols should be using Userinfo and Host
-		// instead.  Clients that wish to use RawAuthority will have to
-		// interpret it themselves: RFC 2396 does not define the meaning.
-
-		if strings.Contains(rawHost, "%") {
-			// Host cannot contain escaped characters.
-			err = errors.New("hexadecimal escape in host")
+	if (url.Scheme != "" || !viaRequest) && strings.HasPrefix(rest, "//") && !strings.HasPrefix(rest, "///") {
+		var authority string
+		authority, rest = split(rest[2:], '/', false)
+		url.User, url.Host, err = parseAuthority(authority)
+		if err != nil {
 			goto Error
 		}
-		url.Host = rawHost
-
-		if url.Path, err = unescape(path, encodePath); err != nil {
+		if strings.Contains(url.Host, "%") {
+			err = errors.New("hexadecimal escape in host")
 			goto Error
 		}
 	}
+	if url.Path, err = unescape(rest, encodePath); err != nil {
+		goto Error
+	}
 	return url, nil
 
 Error:
 	return nil, &Error{"parse", rawurl, err}
+}
 
+func parseAuthority(authority string) (user *Userinfo, host string, err error) {
+	if strings.Index(authority, "@") < 0 {
+		host = authority
+		return
+	}
+	userinfo, host := split(authority, '@', true)
+	if strings.Index(userinfo, ":") < 0 {
+		if userinfo, err = unescape(userinfo, encodeUserPassword); err != nil {
+			return
+		}
+		user = User(userinfo)
+	} else {
+		username, password := split(userinfo, ':', true)
+		if username, err = unescape(username, encodeUserPassword); err != nil {
+			return
+		}
+		if password, err = unescape(password, encodeUserPassword); err != nil {
+			return
+		}
+		user = UserPassword(username, password)
+	}
+	return
 }
 
 // ParseWithReference is like Parse but allows a trailing #fragment.
 func ParseWithReference(rawurlref string) (url *URL, err error) {
-	// Cut off #frag.
-	rawurl, frag := split(rawurlref, '#', false)
+	// Cut off #frag
+	rawurl, frag := split(rawurlref, '#', true)
 	if url, err = Parse(rawurl); err != nil {
 		return nil, err
 	}
-	url.Raw += frag
-	url.RawPath += frag
-	if len(frag) > 1 {
-		frag = frag[1:]
-		if url.Fragment, err = unescape(frag, encodeFragment); err != nil {
-			return nil, &Error{"parse", rawurl, err}
-		}
+	if frag == "" {
+		return url, nil
+	}
+	if url.Fragment, err = unescape(frag, encodeFragment); err != nil {
+		return nil, &Error{"parse", rawurlref, err}
 	}
 	return url, nil
 }
 
 // String reassembles url into a valid URL string.
-//
-// There are redundant fields stored in the URL structure:
-// the String method consults Scheme, Path, Host, RawUserinfo,
-// RawQuery, and Fragment, but not Raw, RawPath or RawAuthority.
 func (url *URL) String() string {
+	// TODO: Rewrite to use bytes.Buffer
 	result := ""
 	if url.Scheme != "" {
 		result += url.Scheme + ":"
 	}
-	if url.Host != "" || url.RawUserinfo != "" {
-		result += "//"
-		if url.RawUserinfo != "" {
-			// hide the password, if any
-			info := url.RawUserinfo
-			if i := strings.Index(info, ":"); i >= 0 {
-				info = info[0:i] + ":******"
+	if url.Opaque != "" {
+		result += url.Opaque
+	} else {
+		if url.Host != "" || url.User != nil {
+			result += "//"
+			if u := url.User; u != nil {
+				result += u.String() + "@"
 			}
-			result += info + "@"
-		}
-		result += url.Host
-	}
-	if url.OpaquePath {
-		path := url.Path
-		if strings.HasPrefix(path, "/") {
-			result += "%2f"
-			path = path[1:]
+			result += url.Host
 		}
-		result += escape(path, encodeOpaque)
-	} else {
 		result += escape(url.Path, encodePath)
 	}
 	if url.RawQuery != "" {
@@ -630,47 +607,38 @@ func (base *URL) Parse(ref string) (*URL, error) {
 // base or reference. If ref is an absolute URL, then ResolveReference
 // ignores base and returns a copy of ref.
 func (base *URL) ResolveReference(ref *URL) *URL {
-	url := new(URL)
-	switch {
-	case ref.IsAbs():
-		*url = *ref
-	default:
-		// relativeURI   = ( net_path | abs_path | rel_path ) [ "?" query ]
-		*url = *base
-		if ref.RawAuthority != "" {
-			// The "net_path" case.
-			url.RawAuthority = ref.RawAuthority
-			url.Host = ref.Host
-			url.RawUserinfo = ref.RawUserinfo
-		}
-		switch {
-		case url.OpaquePath:
-			url.Path = ref.Path
-			url.RawPath = ref.RawPath
-			url.RawQuery = ref.RawQuery
-		case strings.HasPrefix(ref.Path, "/"):
-			// The "abs_path" case.
-			url.Path = ref.Path
-			url.RawPath = ref.RawPath
-			url.RawQuery = ref.RawQuery
-		default:
-			// The "rel_path" case.
-			path := resolvePath(base.Path, ref.Path)
-			if !strings.HasPrefix(path, "/") {
-				path = "/" + path
-			}
-			url.Path = path
-			url.RawPath = url.Path
-			url.RawQuery = ref.RawQuery
-			if ref.RawQuery != "" {
-				url.RawPath += "?" + url.RawQuery
-			}
+	if ref.IsAbs() {
+		url := *ref
+		return &url
+	}
+	// relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ]
+	url := *base
+	url.RawQuery = ref.RawQuery
+	url.Fragment = ref.Fragment
+	if ref.Opaque != "" {
+		url.Opaque = ref.Opaque
+		url.User = nil
+		url.Host = ""
+		url.Path = ""
+		return &url
+	}
+	if ref.Host != "" || ref.User != nil {
+		// The "net_path" case.
+		url.Host = ref.Host
+		url.User = ref.User
+	}
+	if strings.HasPrefix(ref.Path, "/") {
+		// The "abs_path" case.
+		url.Path = ref.Path
+	} else {
+		// The "rel_path" case.
+		path := resolvePath(base.Path, ref.Path)
+		if !strings.HasPrefix(path, "/") {
+			path = "/" + path
 		}
-
-		url.Fragment = ref.Fragment
+		url.Path = path
 	}
-	url.Raw = url.String()
-	return url
+	return &url
 }
 
 // Query parses RawQuery and returns the corresponding values.
@@ -679,7 +647,18 @@ func (u *URL) Query() Values {
 	return v
 }
 
-// EncodedPath returns the URL's path in "URL path encoded" form.
-func (u *URL) EncodedPath() string {
-	return escape(u.Path, encodePath)
+// RequestURI returns the encoded path?query or opaque?query
+// string that would be used in an HTTP request for u.
+func (u *URL) RequestURI() string {
+	result := u.Opaque
+	if result == "" {
+		result = escape(u.Path, encodePath)
+		if result == "" {
+			result = "/"
+		}
+	}
+	if u.RawQuery != "" {
+		result += "?" + u.RawQuery
+	}
+	return result
 }
diff --git a/libgo/go/net/url/url_test.go b/libgo/go/net/url/url_test.go
index dab3bfa1bbd..9fe5ff886b7 100644
--- a/libgo/go/net/url/url_test.go
+++ b/libgo/go/net/url/url_test.go
@@ -21,10 +21,8 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com",
 		&URL{
-			Raw:          "http://www.google.com",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
+			Scheme: "http",
+			Host:   "www.google.com",
 		},
 		"",
 	},
@@ -32,12 +30,9 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com/",
 		&URL{
-			Raw:          "http://www.google.com/",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/",
-			Path:         "/",
+			Scheme: "http",
+			Host:   "www.google.com",
+			Path:   "/",
 		},
 		"",
 	},
@@ -45,12 +40,9 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com/file%20one%26two",
 		&URL{
-			Raw:          "http://www.google.com/file%20one%26two",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/file%20one%26two",
-			Path:         "/file one&two",
+			Scheme: "http",
+			Host:   "www.google.com",
+			Path:   "/file one&two",
 		},
 		"http://www.google.com/file%20one&two",
 	},
@@ -58,13 +50,10 @@ var urltests = []URLTest{
 	{
 		"ftp://webmaster@www.google.com/",
 		&URL{
-			Raw:          "ftp://webmaster@www.google.com/",
-			Scheme:       "ftp",
-			RawAuthority: "webmaster@www.google.com",
-			RawUserinfo:  "webmaster",
-			Host:         "www.google.com",
-			RawPath:      "/",
-			Path:         "/",
+			Scheme: "ftp",
+			User:   User("webmaster"),
+			Host:   "www.google.com",
+			Path:   "/",
 		},
 		"",
 	},
@@ -72,13 +61,10 @@ var urltests = []URLTest{
 	{
 		"ftp://john%20doe@www.google.com/",
 		&URL{
-			Raw:          "ftp://john%20doe@www.google.com/",
-			Scheme:       "ftp",
-			RawAuthority: "john%20doe@www.google.com",
-			RawUserinfo:  "john%20doe",
-			Host:         "www.google.com",
-			RawPath:      "/",
-			Path:         "/",
+			Scheme: "ftp",
+			User:   User("john doe"),
+			Host:   "www.google.com",
+			Path:   "/",
 		},
 		"ftp://john%20doe@www.google.com/",
 	},
@@ -86,13 +72,10 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com/?q=go+language",
 		&URL{
-			Raw:          "http://www.google.com/?q=go+language",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/?q=go+language",
-			Path:         "/",
-			RawQuery:     "q=go+language",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
 		},
 		"",
 	},
@@ -100,13 +83,10 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com/?q=go%20language",
 		&URL{
-			Raw:          "http://www.google.com/?q=go%20language",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/?q=go%20language",
-			Path:         "/",
-			RawQuery:     "q=go%20language",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go%20language",
 		},
 		"",
 	},
@@ -114,48 +94,39 @@ var urltests = []URLTest{
 	{
 		"http://www.google.com/a%20b?q=c+d",
 		&URL{
-			Raw:          "http://www.google.com/a%20b?q=c+d",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/a%20b?q=c+d",
-			Path:         "/a b",
-			RawQuery:     "q=c+d",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/a b",
+			RawQuery: "q=c+d",
 		},
 		"",
 	},
-	// path without leading /, so no query parsing
+	// path without leading /, so no parsing
 	{
 		"http:www.google.com/?q=go+language",
 		&URL{
-			Raw:        "http:www.google.com/?q=go+language",
-			Scheme:     "http",
-			RawPath:    "www.google.com/?q=go+language",
-			Path:       "www.google.com/?q=go+language",
-			OpaquePath: true,
+			Scheme:   "http",
+			Opaque:   "www.google.com/",
+			RawQuery: "q=go+language",
 		},
 		"http:www.google.com/?q=go+language",
 	},
-	// path without leading /, so no query parsing
+	// path without leading /, so no parsing
 	{
 		"http:%2f%2fwww.google.com/?q=go+language",
 		&URL{
-			Raw:        "http:%2f%2fwww.google.com/?q=go+language",
-			Scheme:     "http",
-			RawPath:    "%2f%2fwww.google.com/?q=go+language",
-			Path:       "//www.google.com/?q=go+language",
-			OpaquePath: true,
+			Scheme:   "http",
+			Opaque:   "%2f%2fwww.google.com/",
+			RawQuery: "q=go+language",
 		},
-		"http:%2f/www.google.com/?q=go+language",
+		"http:%2f%2fwww.google.com/?q=go+language",
 	},
 	// non-authority
 	{
 		"mailto:/webmaster@golang.org",
 		&URL{
-			Raw:     "mailto:/webmaster@golang.org",
-			Scheme:  "mailto",
-			RawPath: "/webmaster@golang.org",
-			Path:    "/webmaster@golang.org",
+			Scheme: "mailto",
+			Path:   "/webmaster@golang.org",
 		},
 		"",
 	},
@@ -163,11 +134,8 @@ var urltests = []URLTest{
 	{
 		"mailto:webmaster@golang.org",
 		&URL{
-			Raw:        "mailto:webmaster@golang.org",
-			Scheme:     "mailto",
-			RawPath:    "webmaster@golang.org",
-			Path:       "webmaster@golang.org",
-			OpaquePath: true,
+			Scheme: "mailto",
+			Opaque: "webmaster@golang.org",
 		},
 		"",
 	},
@@ -175,8 +143,6 @@ var urltests = []URLTest{
 	{
 		"/foo?query=http://bad",
 		&URL{
-			Raw:      "/foo?query=http://bad",
-			RawPath:  "/foo?query=http://bad",
 			Path:     "/foo",
 			RawQuery: "query=http://bad",
 		},
@@ -186,12 +152,7 @@ var urltests = []URLTest{
 	{
 		"//foo",
 		&URL{
-			RawAuthority: "foo",
-			Raw:          "//foo",
-			Host:         "foo",
-			Scheme:       "",
-			RawPath:      "",
-			Path:         "",
+			Host: "foo",
 		},
 		"",
 	},
@@ -199,14 +160,10 @@ var urltests = []URLTest{
 	{
 		"//user@foo/path?a=b",
 		&URL{
-			Raw:          "//user@foo/path?a=b",
-			RawAuthority: "user@foo",
-			RawUserinfo:  "user",
-			Scheme:       "",
-			RawPath:      "/path?a=b",
-			Path:         "/path",
-			RawQuery:     "a=b",
-			Host:         "foo",
+			User:     User("user"),
+			Host:     "foo",
+			Path:     "/path",
+			RawQuery: "a=b",
 		},
 		"",
 	},
@@ -218,36 +175,18 @@ var urltests = []URLTest{
 	{
 		"///threeslashes",
 		&URL{
-			RawAuthority: "",
-			Raw:          "///threeslashes",
-			Host:         "",
-			Scheme:       "",
-			RawPath:      "///threeslashes",
-			Path:         "///threeslashes",
+			Path: "///threeslashes",
 		},
 		"",
 	},
 	{
 		"http://user:password@google.com",
 		&URL{
-			Raw:          "http://user:password@google.com",
-			Scheme:       "http",
-			RawAuthority: "user:password@google.com",
-			RawUserinfo:  "user:password",
-			Host:         "google.com",
-		},
-		"http://user:******@google.com",
-	},
-	{
-		"http://user:longerpass@google.com",
-		&URL{
-			Raw:          "http://user:longerpass@google.com",
-			Scheme:       "http",
-			RawAuthority: "user:longerpass@google.com",
-			RawUserinfo:  "user:longerpass",
-			Host:         "google.com",
+			Scheme: "http",
+			User:   UserPassword("user", "password"),
+			Host:   "google.com",
 		},
-		"http://user:******@google.com",
+		"http://user:password@google.com",
 	},
 }
 
@@ -255,13 +194,10 @@ var urlnofragtests = []URLTest{
 	{
 		"http://www.google.com/?q=go+language#foo",
 		&URL{
-			Raw:          "http://www.google.com/?q=go+language#foo",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/?q=go+language#foo",
-			Path:         "/",
-			RawQuery:     "q=go+language#foo",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language#foo",
 		},
 		"",
 	},
@@ -271,28 +207,22 @@ var urlfragtests = []URLTest{
 	{
 		"http://www.google.com/?q=go+language#foo",
 		&URL{
-			Raw:          "http://www.google.com/?q=go+language#foo",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/?q=go+language#foo",
-			Path:         "/",
-			RawQuery:     "q=go+language",
-			Fragment:     "foo",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
+			Fragment: "foo",
 		},
 		"",
 	},
 	{
 		"http://www.google.com/?q=go+language#foo%26bar",
 		&URL{
-			Raw:          "http://www.google.com/?q=go+language#foo%26bar",
-			Scheme:       "http",
-			RawAuthority: "www.google.com",
-			Host:         "www.google.com",
-			RawPath:      "/?q=go+language#foo%26bar",
-			Path:         "/",
-			RawQuery:     "q=go+language",
-			Fragment:     "foo&bar",
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
+			Fragment: "foo&bar",
 		},
 		"http://www.google.com/?q=go+language#foo&bar",
 	},
@@ -300,9 +230,15 @@ var urlfragtests = []URLTest{
 
 // more useful string for debugging than fmt's struct printer
 func ufmt(u *URL) string {
-	return fmt.Sprintf("raw=%q, scheme=%q, rawpath=%q, auth=%q, userinfo=%q, host=%q, path=%q, rawq=%q, frag=%q",
-		u.Raw, u.Scheme, u.RawPath, u.RawAuthority, u.RawUserinfo,
-		u.Host, u.Path, u.RawQuery, u.Fragment)
+	var user, pass interface{}
+	if u.User != nil {
+		user = u.User.Username()
+		if p, ok := u.User.Password(); ok {
+			pass = p
+		}
+	}
+	return fmt.Sprintf("opaque=%q, scheme=%q, user=%#v, pass=%#v, host=%q, path=%q, rawq=%q, frag=%q",
+		u.Opaque, u.Scheme, user, pass, u.Host, u.Path, u.RawQuery, u.Fragment)
 }
 
 func DoTest(t *testing.T, parse func(string) (*URL, error), name string, tests []URLTest) {
@@ -370,11 +306,11 @@ func DoTestString(t *testing.T, parse func(string) (*URL, error), name string, t
 			t.Errorf("%s(%q) returned error %s", name, tt.in, err)
 			continue
 		}
-		s := u.String()
 		expected := tt.in
 		if len(tt.roundtrip) > 0 {
 			expected = tt.roundtrip
 		}
+		s := u.String()
 		if s != expected {
 			t.Errorf("%s(%q).String() == %q (expected %q)", name, tt.in, s, expected)
 		}
@@ -504,33 +440,11 @@ func TestEscape(t *testing.T) {
 	}
 }
 
-type UserinfoTest struct {
-	User     string
-	Password string
-	Raw      string
-}
-
-var userinfoTests = []UserinfoTest{
-	{"user", "password", "user:password"},
-	{"foo:bar", "~!@#$%^&*()_+{}|[]\\-=`:;'\"<>?,./",
-		"foo%3Abar:~!%40%23$%25%5E&*()_+%7B%7D%7C%5B%5D%5C-=%60%3A;'%22%3C%3E?,.%2F"},
-}
-
-func TestEscapeUserinfo(t *testing.T) {
-	for _, tt := range userinfoTests {
-		if raw := EscapeUserinfo(tt.User, tt.Password); raw != tt.Raw {
-			t.Errorf("EscapeUserinfo(%q, %q) = %q, want %q", tt.User, tt.Password, raw, tt.Raw)
-		}
-	}
-}
-
-func TestUnescapeUserinfo(t *testing.T) {
-	for _, tt := range userinfoTests {
-		if user, pass, err := UnescapeUserinfo(tt.Raw); user != tt.User || pass != tt.Password || err != nil {
-			t.Errorf("UnescapeUserinfo(%q) = %q, %q, %v, want %q, %q, nil", tt.Raw, user, pass, err, tt.User, tt.Password)
-		}
-	}
-}
+//var userinfoTests = []UserinfoTest{
+//	{"user", "password", "user:password"},
+//	{"foo:bar", "~!@#$%^&*()_+{}|[]\\-=`:;'\"<>?,./",
+//		"foo%3Abar:~!%40%23$%25%5E&*()_+%7B%7D%7C%5B%5D%5C-=%60%3A;'%22%3C%3E?,.%2F"},
+//}
 
 type EncodeQueryTest struct {
 	m         Values
@@ -664,6 +578,57 @@ func TestResolveReference(t *testing.T) {
 		t.Errorf("Expected an error from Parse wrapper parsing an empty string.")
 	}
 
+	// Ensure Opaque resets the URL.
+	base = mustParse("scheme://user@foo.com/bar")
+	abs = base.ResolveReference(&URL{Opaque: "opaque"})
+	want := mustParse("scheme:opaque")
+	if *abs != *want {
+		t.Errorf("ResolveReference failed to resolve opaque URL: want %#v, got %#v", abs, want)
+	}
+}
+
+func TestResolveReferenceOpaque(t *testing.T) {
+	mustParse := func(url string) *URL {
+		u, err := ParseWithReference(url)
+		if err != nil {
+			t.Fatalf("Expected URL to parse: %q, got error: %v", url, err)
+		}
+		return u
+	}
+	for _, test := range resolveReferenceTests {
+		base := mustParse(test.base)
+		rel := mustParse(test.rel)
+		url := base.ResolveReference(rel)
+		urlStr := url.String()
+		if urlStr != test.expected {
+			t.Errorf("Resolving %q + %q != %q; got %q", test.base, test.rel, test.expected, urlStr)
+		}
+	}
+
+	// Test that new instances are returned.
+	base := mustParse("http://foo.com/")
+	abs := base.ResolveReference(mustParse("."))
+	if base == abs {
+		t.Errorf("Expected no-op reference to return new URL instance.")
+	}
+	barRef := mustParse("http://bar.com/")
+	abs = base.ResolveReference(barRef)
+	if abs == barRef {
+		t.Errorf("Expected resolution of absolute reference to return new URL instance.")
+	}
+
+	// Test the convenience wrapper too
+	base = mustParse("http://foo.com/path/one/")
+	abs, _ = base.Parse("../two")
+	expected := "http://foo.com/path/two"
+	if abs.String() != expected {
+		t.Errorf("Parse wrapper got %q; expected %q", abs.String(), expected)
+	}
+	_, err := base.Parse("")
+	if err == nil {
+		t.Errorf("Expected an error from Parse wrapper parsing an empty string.")
+	}
+
 }
 
 func TestQueryValues(t *testing.T) {
@@ -747,3 +712,60 @@ func TestParseQuery(t *testing.T) {
 		}
 	}
 }
+
+type RequestURITest struct {
+	url *URL
+	out string
+}
+
+var requritests = []RequestURITest{
+	{
+		&URL{
+			Scheme: "http",
+			Host:   "example.com",
+			Path:   "",
+		},
+		"/",
+	},
+	{
+		&URL{
+			Scheme: "http",
+			Host:   "example.com",
+			Path:   "/a b",
+		},
+		"/a%20b",
+	},
+	{
+		&URL{
+			Scheme:   "http",
+			Host:     "example.com",
+			Path:     "/a b",
+			RawQuery: "q=go+language",
+		},
+		"/a%20b?q=go+language",
+	},
+	{
+		&URL{
+			Scheme: "myschema",
+			Opaque: "opaque",
+		},
+		"opaque",
+	},
+	{
+		&URL{
+			Scheme:   "myschema",
+			Opaque:   "opaque",
+			RawQuery: "q=go+language",
+		},
+		"opaque?q=go+language",
+	},
+}
+
+func TestRequestURI(t *testing.T) {
+	for _, tt := range requritests {
+		s := tt.url.RequestURI()
+		if s != tt.out {
+			t.Errorf("%#v.RequestURI() == %q (expected %q)", tt.url, s, tt.out)
+		}
+	}
+}