Bugzilla bug #17223: added the PR_MSG_PEEK (with same value as MSG_PEEK)

for PR_Recv().  Define _PR_EMULATE_MSG_PEEK on platforms that don't
natively support MSG_PEEK.  Implemented PR_MSG_PEEK for pthreads.
Added the peek.c test case.
Modified files: prio.h, _macos.h, _winnt.h, primpl.h, ptio.c,
pr/tests/Makefile, pr/tests/Makefile.in
Added file: pr/tests/peek.c

1 files changed, 361 insertions, 0 deletions

diff --git a/pr/tests/peek.c b/pr/tests/peek.c
new file mode 100644
index 00000000..e8cbd646
--- /dev/null
+++ b/pr/tests/peek.c
@@ -0,0 +1,361 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.1 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ * 
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ * 
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1999 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * A test case for the PR_MSG_PEEK flag of PR_Recv().
+ *
+ * Test both blocking and non-blocking sockets.
+ */
+
+#include "nspr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BUFFER_SIZE 1024
+
+static int iterations = 10;
+
+/*
+ * In iteration i, recv_amount[i] is the number of bytes we
+ * wish to receive, and send_amount[i] is the number of bytes
+ * we actually send.  Therefore, the number of elements in the
+ * recv_amount or send_amount array should equal to 'iterations'.
+ * For this test to pass we need to ensure that
+ *     recv_amount[i] <= BUFFER_SIZE,
+ *     send_amount[i] <= BUFFER_SIZE,
+ *     send_amount[i] <= recv_amount[i].
+ */
+static PRInt32 recv_amount[10] = {
+    16, 128, 256, 1024, 512, 512, 128, 256, 32, 32};
+static PRInt32 send_amount[10] = {
+    16,  64, 128, 1024, 512, 256, 128,  64, 16, 32};
+
+/* Blocking I/O */
+static void ServerB(void *arg)
+{
+    PRFileDesc *listenSock = (PRFileDesc *) arg;
+    PRFileDesc *sock;
+    char buf[BUFFER_SIZE];
+    PRInt32 nbytes;
+    int i;
+    int j;
+
+    sock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
+    if (NULL == sock) {
+        fprintf(stderr, "PR_Accept failed\n");
+        exit(1);
+    }
+
+    for (i = 0; i < iterations; i++) {
+        memset(buf, 0, sizeof(buf));
+        nbytes = PR_Recv(sock, buf, recv_amount[i],
+                PR_MSG_PEEK, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Recv failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "server: peeked expected data\n");
+
+        memset(buf, 0, sizeof(buf));
+        nbytes = PR_Recv(sock, buf, recv_amount[i],
+                PR_MSG_PEEK, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Recv failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "server: peeked expected data\n");
+
+        memset(buf, 0, sizeof(buf));
+        nbytes = PR_Recv(sock, buf, recv_amount[i],
+                0, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Recv failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "server: received expected data\n");
+
+        PR_Sleep(PR_SecondsToInterval(1));
+        memset(buf, 2*i+1, send_amount[i]);
+        nbytes = PR_Send(sock, buf, send_amount[i],
+                0, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Send failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Send returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+    }
+    if (PR_Close(sock) == PR_FAILURE) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+}
+
+/* Non-blocking I/O */
+static void ClientNB(void *arg)
+{
+    PRFileDesc *sock;
+    PRSocketOptionData opt;
+    PRUint16 port = (PRUint16) arg;
+    PRNetAddr addr;
+    char buf[BUFFER_SIZE];
+    PRPollDesc pd;
+    PRInt32 npds;
+    PRInt32 nbytes;
+    int i;
+    int j;
+
+    sock = PR_OpenTCPSocket(PR_AF_INET6);
+    if (NULL == sock) {
+        fprintf(stderr, "PR_OpenTCPSocket failed\n");
+        exit(1);
+    }
+    opt.option = PR_SockOpt_Nonblocking;
+    opt.value.non_blocking = PR_TRUE;
+    if (PR_SetSocketOption(sock, &opt) == PR_FAILURE) {
+        fprintf(stderr, "PR_SetSocketOption failed\n");
+        exit(1);
+    }
+    memset(&addr, 0, sizeof(addr));
+    if (PR_SetNetAddr(PR_IpAddrLoopback, PR_AF_INET6, port, &addr)
+            == PR_FAILURE) {
+        fprintf(stderr, "PR_SetNetAddr failed\n");
+        exit(1);
+    }
+    if (PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT) == PR_FAILURE) {
+        if (PR_GetError() != PR_WOULD_BLOCK_ERROR) {
+            fprintf(stderr, "PR_Connect failed\n");
+            exit(1);
+        }
+        pd.fd = sock;
+        pd.in_flags = PR_POLL_WRITE | PR_POLL_EXCEPT;
+        npds = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == npds) {
+            fprintf(stderr, "PR_Poll failed\n");
+            exit(1);
+        }
+        if (1 != npds) {
+            fprintf(stderr, "PR_Poll returned %d, absurd!\n", npds);
+            exit(1);
+        }
+        if (PR_GetConnectStatus(&pd) == PR_FAILURE) {
+            fprintf(stderr, "PR_GetConnectStatus failed\n");
+            exit(1);
+        }
+    }
+
+    for (i = 0; i < iterations; i++) {
+        PR_Sleep(PR_SecondsToInterval(1));
+        memset(buf, 2*i, send_amount[i]);
+        while ((nbytes = PR_Send(sock, buf, send_amount[i],
+                0, PR_INTERVAL_NO_TIMEOUT)) == -1) {
+            if (PR_GetError() != PR_WOULD_BLOCK_ERROR) {
+                fprintf(stderr, "PR_Send failed\n");
+                exit(1);
+            }
+            pd.fd = sock;
+            pd.in_flags = PR_POLL_WRITE;
+            npds = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
+            if (-1 == npds) {
+                fprintf(stderr, "PR_Poll failed\n");
+                exit(1);
+            }
+            if (1 != npds) {
+                fprintf(stderr, "PR_Poll returned %d, absurd!\n", npds);
+                exit(1);
+            }
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Send returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+
+        memset(buf, 0, sizeof(buf));
+        while ((nbytes = PR_Recv(sock, buf, recv_amount[i],
+                PR_MSG_PEEK, PR_INTERVAL_NO_TIMEOUT)) == -1) {
+            if (PR_GetError() != PR_WOULD_BLOCK_ERROR) {
+                fprintf(stderr, "PR_Recv failed\n");
+                exit(1);
+            }
+            pd.fd = sock;
+            pd.in_flags = PR_POLL_READ;
+            npds = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
+            if (-1 == npds) {
+                fprintf(stderr, "PR_Poll failed\n");
+                exit(1);
+            }
+            if (1 != npds) {
+                fprintf(stderr, "PR_Poll returned %d, absurd!\n", npds);
+                exit(1);
+            }
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i+1) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i+1, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "client: peeked expected data\n");
+
+        memset(buf, 0, sizeof(buf));
+        nbytes = PR_Recv(sock, buf, recv_amount[i],
+                PR_MSG_PEEK, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Recv failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i+1) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i+1, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "client: peeked expected data\n");
+
+        memset(buf, 0, sizeof(buf));
+        nbytes = PR_Recv(sock, buf, recv_amount[i],
+                0, PR_INTERVAL_NO_TIMEOUT);
+        if (-1 == nbytes) {
+            fprintf(stderr, "PR_Recv failed\n");
+            exit(1);
+        }
+        if (send_amount[i] != nbytes) {
+            fprintf(stderr, "PR_Recv returned %d, absurd!\n", nbytes);
+            exit(1);
+        }
+        for (j = 0; j < nbytes; j++) {
+            if (buf[j] != 2*i+1) {
+                fprintf(stderr, "byte %d should be %d but is %d\n",
+                        j, 2*i+1, buf[j]);
+                exit(1);
+            }
+        }
+        fprintf(stderr, "client: received expected data\n");
+    }
+    if (PR_Close(sock) == PR_FAILURE) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    PRThread *server, *client;
+    PRFileDesc *listenSock;
+    PRNetAddr addr;
+    PRThreadScope scope = PR_GLOBAL_THREAD;
+
+    listenSock = PR_OpenTCPSocket(PR_AF_INET6);
+    if (NULL == listenSock) {
+        fprintf(stderr, "PR_OpenTCPSocket failed\n");
+        exit(1);
+    }
+    memset(&addr, 0, sizeof(addr));
+    if (PR_SetNetAddr(PR_IpAddrAny, PR_AF_INET6, 0, &addr) == PR_FAILURE) {
+        fprintf(stderr, "PR_SetNetAddr failed\n");
+        exit(1);
+    }
+    if (PR_Bind(listenSock, &addr) == PR_FAILURE) {
+        fprintf(stderr, "PR_Bind failed\n");
+        exit(1);
+    }
+    if (PR_GetSockName(listenSock, &addr) == PR_FAILURE) {
+        fprintf(stderr, "PR_GetSockName failed\n");
+        exit(1);
+    }
+    if (PR_Listen(listenSock, 5) == PR_FAILURE) {
+        fprintf(stderr, "PR_Listen failed\n");
+        exit(1);
+    }
+
+    server = PR_CreateThread(PR_USER_THREAD, ServerB, listenSock,
+            PR_PRIORITY_NORMAL, scope, PR_JOINABLE_THREAD, 0);
+    if (NULL == server) {
+        fprintf(stderr, "PR_CreateThread failed\n");
+        exit(1);
+    }
+    client = PR_CreateThread(
+            PR_USER_THREAD, ClientNB, (void *) PR_ntohs(addr.ipv6.port),
+            PR_PRIORITY_NORMAL, scope, PR_JOINABLE_THREAD, 0);
+    if (NULL == client) {
+        fprintf(stderr, "PR_CreateThread failed\n");
+        exit(1);
+    }
+
+    if (PR_JoinThread(server) == PR_FAILURE) {
+        fprintf(stderr, "PR_JoinThread failed\n");
+        exit(1);
+    }
+    if (PR_JoinThread(client) == PR_FAILURE) {
+        fprintf(stderr, "PR_JoinThread failed\n");
+        exit(1);
+    }
+    if (PR_Close(listenSock) == PR_FAILURE) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+    printf("PASS\n");
+    return 0;
+}