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|
#include "ace/SOCK_Connector.h"
#include "ace/INET_Addr.h"
#include "ace/Log_Category.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_sys_socket.h"
#include "ace/os_include/os_fcntl.h"
#if defined (ACE_HAS_ALLOC_HOOKS)
# include "ace/Malloc_Base.h"
#endif /* ACE_HAS_ALLOC_HOOKS */
#if !defined (ACE_HAS_WINCE)
#include "ace/OS_QoS.h"
#endif // ACE_HAS_WINCE
#if !defined (__ACE_INLINE__)
#include "ace/SOCK_Connector.inl"
#endif /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_SOCK_Connector)
void
ACE_SOCK_Connector::dump (void) const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_SOCK_Connector::dump");
#endif /* ACE_HAS_DUMP */
}
int
ACE_SOCK_Connector::shared_open (ACE_SOCK_Stream &new_stream,
int protocol_family,
int protocol,
int reuse_addr)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_open");
// Only open a new socket if we don't already have a valid handle.
if (new_stream.get_handle () == ACE_INVALID_HANDLE
&& new_stream.open (SOCK_STREAM,
protocol_family,
protocol,
reuse_addr) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_open (ACE_SOCK_Stream &new_stream,
int protocol_family,
int protocol,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_open");
// Only open a new socket if we don't already have a valid handle.
if (new_stream.get_handle () == ACE_INVALID_HANDLE
&& new_stream.open (SOCK_STREAM,
protocol_family,
protocol,
protocolinfo,
g,
flags,
reuse_addr) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_connect_start (ACE_SOCK_Stream &new_stream,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_connect_start");
if (local_sap != ACE_Addr::sap_any)
{
sockaddr *laddr = reinterpret_cast<sockaddr *> (local_sap.get_addr ());
int const size = local_sap.get_size ();
if (ACE_OS::bind (new_stream.get_handle (), laddr, size) == -1)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
}
}
// Enable non-blocking, if required.
if (timeout != 0 && new_stream.enable (ACE_NONBLOCK) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_connect_finish (ACE_SOCK_Stream &new_stream,
const ACE_Time_Value *timeout,
int result)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_connect_finish");
// Save/restore errno.
ACE_Errno_Guard error (errno);
if (result == -1 && timeout != 0)
{
// Check whether the connection is in progress.
if (error == EINPROGRESS || error == EWOULDBLOCK)
{
// This expression checks if we were polling.
if (*timeout == ACE_Time_Value::zero)
{
#if defined(ACE_WIN32)
// In order to detect when the socket that has been
// bound to is in TIME_WAIT we need to do the connect
// (which will always return EWOULDBLOCK) and then do an
// ACE::handle_timed_complete() (with timeout==0,
// i.e. poll). This will do a select() on the handle
// which will immediately return with the handle in an
// error state. The error code is then retrieved with
// getsockopt(). Good sockets however will return from
// the select() with ETIME - in this case return
// EWOULDBLOCK so the wait strategy can complete the
// connection.
if(ACE::handle_timed_complete (new_stream.get_handle (),
timeout) == ACE_INVALID_HANDLE)
{
int const tmp = errno;
if (tmp != ETIME)
{
error = tmp;
}
else
error = EWOULDBLOCK;
}
else
result = 0;
#else /* ACE_WIN32 */
error = EWOULDBLOCK;
#endif /* ACE_WIN32 */
}
// Wait synchronously using timeout.
else if (this->complete (new_stream, 0, timeout) == -1)
error = errno;
else
return 0;
}
}
// EISCONN is treated specially since this routine may be used to
// check if we are already connected.
if (result != -1 || error == EISCONN)
{
// Start out with non-blocking disabled on the new_stream.
result = new_stream.disable (ACE_NONBLOCK);
if (result == -1)
{
new_stream.close ();
}
}
else if (!(error == EWOULDBLOCK || error == ETIMEDOUT))
{
new_stream.close ();
}
return result;
}
// Actively connect and produce a new ACE_SOCK_Stream if things go well...
int
ACE_SOCK_Connector::connect (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
int reuse_addr,
int /* flags */,
int /* perms */,
int protocol)
{
ACE_TRACE ("ACE_SOCK_Connector::connect");
if (this->shared_open (new_stream,
remote_sap.get_type (),
protocol,
reuse_addr) == -1)
return -1;
else if (this->shared_connect_start (new_stream,
timeout,
local_sap) == -1)
return -1;
#if defined(ACE_WIN32) && defined(ACE_HAS_IPV6)
// On windows, the IPv4-mapped IPv6 address format can only be used on a dual-stack socket.
const ACE_INET_Addr& remote_address = static_cast<const ACE_INET_Addr&>(remote_sap);
if (remote_address.is_ipv4_mapped_ipv6()) {
int zero = 0;
ACE_OS::setsockopt(new_stream.get_handle(),
IPPROTO_IPV6,
IPV6_V6ONLY,
(char *)&zero,
sizeof(zero));
}
#endif
int result = ACE_OS::connect (new_stream.get_handle (),
reinterpret_cast<sockaddr *> (remote_sap.get_addr ()),
remote_sap.get_size ());
return this->shared_connect_finish (new_stream, timeout, result);
}
#if !defined (ACE_HAS_WINCE)
int
ACE_SOCK_Connector::connect (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
ACE_QoS_Params qos_params,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
ACE_Protocol_Info * protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr,
int /* perms */)
{
ACE_TRACE ("ACE_SOCK_Connector::connect");
if (this->shared_open (new_stream,
remote_sap.get_type (),
0,
protocolinfo,
g,
flags,
reuse_addr) == -1)
return -1;
else if (this->shared_connect_start (new_stream,
timeout,
local_sap) == -1)
return -1;
#if defined(ACE_WIN32) && defined(ACE_HAS_IPV6)
// On windows, the IPv4-mapped IPv6 address format can only be used on a dual-stack socket.
const ACE_INET_Addr& remote_address = static_cast<const ACE_INET_Addr&>(remote_sap);
if (remote_address.is_ipv4_mapped_ipv6()) {
int zero = 0;
ACE_OS::setsockopt(new_stream.get_handle(),
IPPROTO_IPV6,
IPV6_V6ONLY,
(char *)&zero,
sizeof(zero));
}
#endif
int result = ACE_OS::connect (new_stream.get_handle (),
reinterpret_cast<sockaddr *> (remote_sap.get_addr ()),
remote_sap.get_size (),
qos_params);
return this->shared_connect_finish (new_stream, timeout, result);
}
#endif // ACE_HAS_WINCE
// Try to complete a non-blocking connection.
int
ACE_SOCK_Connector::complete (ACE_SOCK_Stream &new_stream,
ACE_Addr *remote_sap,
const ACE_Time_Value *tv)
{
ACE_TRACE ("ACE_SOCK_Connector::complete");
ACE_HANDLE h = ACE::handle_timed_complete (new_stream.get_handle (), tv);
// We failed to get connected.
if (h == ACE_INVALID_HANDLE)
{
#if defined (ACE_NON_BLOCKING_BUG_DELAY) && ACE_NON_BLOCKING_BUG_DELAY > 0
// Win32 has a timing problem - if you check to see if the
// connection has completed too fast, it will fail - so wait
// <ACE_NON_BLOCKING_BUG_DELAY> microseconds to let it catch up
// then retry to see if it's a real failure.
ACE_Time_Value time (0, ACE_NON_BLOCKING_BUG_DELAY);
ACE_OS::sleep (time);
h = ACE::handle_timed_complete (new_stream.get_handle (), tv);
if (h == ACE_INVALID_HANDLE)
{
#endif /* ACE_NON_BLOCKING_BUG_DELAY */
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
#if defined (ACE_NON_BLOCKING_BUG_DELAY) && ACE_NON_BLOCKING_BUG_DELAY > 0
}
#endif /* ACE_NON_BLOCKING_BUG_DELAY */
}
if (remote_sap != 0)
{
int len = remote_sap->get_size ();
sockaddr *addr = reinterpret_cast<sockaddr *> (remote_sap->get_addr ());
if (ACE_OS::getpeername (h,
addr,
&len) == -1)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
}
}
// Start out with non-blocking disabled on the <new_stream>.
new_stream.disable (ACE_NONBLOCK);
return 0;
}
ACE_SOCK_Connector::ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
int reuse_addr,
int flags,
int perms,
int protocol)
{
ACE_TRACE ("ACE_SOCK_Connector::ACE_SOCK_Connector");
if (this->connect (new_stream,
remote_sap,
timeout,
local_sap,
reuse_addr,
flags,
perms,
protocol) == -1
&& timeout != 0
&& !(errno == EWOULDBLOCK || errno == ETIME || errno == ETIMEDOUT))
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_SOCK_Connector::ACE_SOCK_Connector")));
}
#if !defined (ACE_HAS_WINCE)
ACE_SOCK_Connector::ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
ACE_QoS_Params qos_params,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr,
int perms)
{
ACE_TRACE ("ACE_SOCK_Connector::ACE_SOCK_Connector");
if (this->connect (new_stream,
remote_sap,
qos_params,
timeout,
local_sap,
protocolinfo,
g,
flags,
reuse_addr,
perms) == -1
&& timeout != 0
&& !(errno == EWOULDBLOCK || errno == ETIME || errno == ETIMEDOUT))
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_SOCK_Connector::ACE_SOCK_Connector")));
}
#endif // ACE_HAS_WINCE
ACE_END_VERSIONED_NAMESPACE_DECL
|
