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-rw-r--r--tests/Makefile.am4
-rw-r--r--tests/hwm.cpp4
-rw-r--r--tests/invalid_rep.cpp4
-rw-r--r--tests/libzmq21.cpp4
-rw-r--r--tests/linger.cpp2
-rw-r--r--tests/msg_flags.cpp4
-rw-r--r--tests/pair_inproc.cpp4
-rw-r--r--tests/pair_ipc.cpp4
-rw-r--r--tests/pair_tcp.cpp4
-rw-r--r--tests/polltimeo.cpp4
-rw-r--r--tests/reconnect.cpp8
-rw-r--r--tests/reqrep_device.cpp8
-rw-r--r--tests/reqrep_inproc.cpp4
-rw-r--r--tests/reqrep_ipc.cpp4
-rw-r--r--tests/reqrep_tcp.cpp4
-rw-r--r--tests/resubscribe.cpp6
-rw-r--r--tests/shutdown.cpp103
-rw-r--r--tests/shutdown_stress.cpp4
-rw-r--r--tests/sub_forward.cpp8
-rw-r--r--tests/survey.cpp10
-rw-r--r--tests/tests.cpp6
-rw-r--r--tests/timeo.cpp6
-rw-r--r--tests/wireformat.cpp4
23 files changed, 162 insertions, 51 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am
index ba76260..47a880b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -24,7 +24,8 @@ noinst_PROGRAMS = pair_inproc \
wireformat \
libzmq21 \
resubscribe \
- survey
+ survey \
+ shutdown
pair_inproc_SOURCES = pair_inproc.cpp testutil.hpp
pair_tcp_SOURCES = pair_tcp.cpp testutil.hpp
@@ -48,5 +49,6 @@ wireformat_SOURCES = wireformat.cpp
libzmq21_SOURCES = libzmq21.cpp
resubscribe_SOURCES = resubscribe.cpp
survey_SOURCES = survey.cpp
+shutdown_SOURCES = shutdown.cpp
TESTS = $(noinst_PROGRAMS)
diff --git a/tests/hwm.cpp b/tests/hwm.cpp
index 6cd9a41..93e8910 100644
--- a/tests/hwm.cpp
+++ b/tests/hwm.cpp
@@ -35,14 +35,14 @@ int XS_TEST_MAIN ()
int rc = xs_setsockopt (sb, XS_RCVHWM, &hwm, sizeof (hwm));
assert (rc == 0);
rc = xs_bind (sb, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_PUSH);
assert (sc);
rc = xs_setsockopt (sc, XS_SNDHWM, &hwm, sizeof (hwm));
assert (rc == 0);
rc = xs_connect (sc, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
// Try to send 10 messages. Only 4 should succeed.
for (int i = 0; i < 10; i++)
diff --git a/tests/invalid_rep.cpp b/tests/invalid_rep.cpp
index cd0ad8e..93118b6 100644
--- a/tests/invalid_rep.cpp
+++ b/tests/invalid_rep.cpp
@@ -38,9 +38,9 @@ int XS_TEST_MAIN ()
rc = xs_setsockopt (req_socket, XS_LINGER, &linger, sizeof (int));
assert (rc == 0);
rc = xs_bind (xrep_socket, "inproc://hi");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_connect (req_socket, "inproc://hi");
- assert (rc == 0);
+ assert (rc != -1);
// Initial request.
rc = xs_send (req_socket, "r", 1, 0);
diff --git a/tests/libzmq21.cpp b/tests/libzmq21.cpp
index e7affae..ecf271b 100644
--- a/tests/libzmq21.cpp
+++ b/tests/libzmq21.cpp
@@ -57,7 +57,7 @@ int XS_TEST_MAIN ()
int rc = xs_setsockopt (pub, XS_PROTOCOL, &protocol, sizeof (protocol));
assert (rc == 0);
rc = xs_bind (pub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
int oldsub = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
struct sockaddr_in address;
@@ -105,7 +105,7 @@ int XS_TEST_MAIN ()
rc = xs_setsockopt (sub, XS_SUBSCRIBE, "", 0);
assert (rc == 0);
rc = xs_bind (sub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
int oldpub = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
address.sin_family = AF_INET;
diff --git a/tests/linger.cpp b/tests/linger.cpp
index fec0f72..1b1d341 100644
--- a/tests/linger.cpp
+++ b/tests/linger.cpp
@@ -37,7 +37,7 @@ int XS_TEST_MAIN ()
// Connect to non-existent endpoing.
assert (rc == 0);
rc = xs_connect (s, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// Send a message.
rc = xs_send (s, "r", 1, 0);
diff --git a/tests/msg_flags.cpp b/tests/msg_flags.cpp
index eade40f..3f3b3b1 100644
--- a/tests/msg_flags.cpp
+++ b/tests/msg_flags.cpp
@@ -30,11 +30,11 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_XREP);
assert (sb);
int rc = xs_bind (sb, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_XREQ);
assert (sc);
rc = xs_connect (sc, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
// Send 2-part message.
rc = xs_send (sc, "A", 1, XS_SNDMORE);
diff --git a/tests/pair_inproc.cpp b/tests/pair_inproc.cpp
index c02d08b..456a371 100644
--- a/tests/pair_inproc.cpp
+++ b/tests/pair_inproc.cpp
@@ -30,12 +30,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_PAIR);
assert (sb);
int rc = xs_bind (sb, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_PAIR);
assert (sc);
rc = xs_connect (sc, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/pair_ipc.cpp b/tests/pair_ipc.cpp
index 43915cc..ef39bfc 100644
--- a/tests/pair_ipc.cpp
+++ b/tests/pair_ipc.cpp
@@ -37,12 +37,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_PAIR);
assert (sb);
int rc = xs_bind (sb, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_PAIR);
assert (sc);
rc = xs_connect (sc, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/pair_tcp.cpp b/tests/pair_tcp.cpp
index a0decb9..1df90ad 100644
--- a/tests/pair_tcp.cpp
+++ b/tests/pair_tcp.cpp
@@ -31,12 +31,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_PAIR);
assert (sb);
int rc = xs_bind (sb, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_PAIR);
assert (sc);
rc = xs_connect (sc, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/polltimeo.cpp b/tests/polltimeo.cpp
index ca88393..f425593 100644
--- a/tests/polltimeo.cpp
+++ b/tests/polltimeo.cpp
@@ -30,7 +30,7 @@ extern "C"
void *sc = xs_socket (ctx_, XS_PUSH);
assert (sc);
int rc = xs_connect (sc, "inproc://timeout_test");
- assert (rc == 0);
+ assert (rc != -1);
sleep (1);
rc = xs_close (sc);
assert (rc == 0);
@@ -48,7 +48,7 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_PULL);
assert (sb);
int rc = xs_bind (sb, "inproc://timeout_test");
- assert (rc == 0);
+ assert (rc != -1);
// Check whether timeout is honoured.
xs_pollitem_t pi;
diff --git a/tests/reconnect.cpp b/tests/reconnect.cpp
index c677527..ebbaf32 100644
--- a/tests/reconnect.cpp
+++ b/tests/reconnect.cpp
@@ -34,7 +34,7 @@ int XS_TEST_MAIN ()
// Connect before bind was done at the peer and send one message.
int rc = xs_connect (push, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_send (push, "ABC", 3, 0);
assert (rc == 3);
@@ -43,7 +43,7 @@ int XS_TEST_MAIN ()
// Bind the peer and get the message.
rc = xs_bind (pull, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
unsigned char buf [3];
rc = xs_recv (pull, buf, sizeof (buf), 0);
assert (rc == 3);
@@ -64,7 +64,7 @@ int XS_TEST_MAIN ()
// Connect before bind was done at the peer and send one message.
rc = xs_connect (push, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_send (push, "ABC", 3, 0);
assert (rc == 3);
@@ -73,7 +73,7 @@ int XS_TEST_MAIN ()
// Bind the peer and get the message.
rc = xs_bind (pull, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_recv (pull, buf, sizeof (buf), 0);
assert (rc == 3);
diff --git a/tests/reqrep_device.cpp b/tests/reqrep_device.cpp
index 81960d9..732f4dc 100644
--- a/tests/reqrep_device.cpp
+++ b/tests/reqrep_device.cpp
@@ -32,23 +32,23 @@ int XS_TEST_MAIN ()
void *xreq = xs_socket (ctx, XS_XREQ);
assert (xreq);
int rc = xs_bind (xreq, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
void *xrep = xs_socket (ctx, XS_XREP);
assert (xrep);
rc = xs_bind (xrep, "tcp://127.0.0.1:5561");
- assert (rc == 0);
+ assert (rc != -1);
// Create a worker.
void *rep = xs_socket (ctx, XS_REP);
assert (rep);
rc = xs_connect (rep, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// Create a client.
void *req = xs_socket (ctx, XS_REQ);
assert (req);
rc = xs_connect (req, "tcp://127.0.0.1:5561");
- assert (rc == 0);
+ assert (rc != -1);
// Send a request.
rc = xs_send (req, "ABC", 3, XS_SNDMORE);
diff --git a/tests/reqrep_inproc.cpp b/tests/reqrep_inproc.cpp
index c66b82b..bd5cc92 100644
--- a/tests/reqrep_inproc.cpp
+++ b/tests/reqrep_inproc.cpp
@@ -30,12 +30,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_REP);
assert (sb);
int rc = xs_bind (sb, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_REQ);
assert (sc);
rc = xs_connect (sc, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/reqrep_ipc.cpp b/tests/reqrep_ipc.cpp
index 9be50fb..66315ef 100644
--- a/tests/reqrep_ipc.cpp
+++ b/tests/reqrep_ipc.cpp
@@ -37,12 +37,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_REP);
assert (sb);
int rc = xs_bind (sb, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_REQ);
assert (sc);
rc = xs_connect (sc, "ipc:///tmp/tester");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/reqrep_tcp.cpp b/tests/reqrep_tcp.cpp
index b11d5a1..f68d762 100644
--- a/tests/reqrep_tcp.cpp
+++ b/tests/reqrep_tcp.cpp
@@ -31,12 +31,12 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_REP);
assert (sb);
int rc = xs_bind (sb, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
void *sc = xs_socket (ctx, XS_REQ);
assert (sc);
rc = xs_connect (sc, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
bounce (sb, sc);
diff --git a/tests/resubscribe.cpp b/tests/resubscribe.cpp
index 1924434..5d78712 100644
--- a/tests/resubscribe.cpp
+++ b/tests/resubscribe.cpp
@@ -34,13 +34,13 @@ int XS_TEST_MAIN ()
// Send two subscriptions upstream.
int rc = xs_bind (xpub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_setsockopt (sub, XS_SUBSCRIBE, "a", 1);
assert (rc == 0);
rc = xs_setsockopt (sub, XS_SUBSCRIBE, "b", 1);
assert (rc == 0);
rc = xs_connect (sub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// Check whether subscriptions are correctly received.
char buf [5];
@@ -68,7 +68,7 @@ int XS_TEST_MAIN ()
xpub = xs_socket (ctx, XS_XPUB);
assert (xpub);
rc = xs_bind (xpub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// We have to give control to the SUB socket here so that it has
// chance to resend the subscriptions.
diff --git a/tests/shutdown.cpp b/tests/shutdown.cpp
new file mode 100644
index 0000000..9f055a1
--- /dev/null
+++ b/tests/shutdown.cpp
@@ -0,0 +1,103 @@
+/*
+ Copyright (c) 2012 250bpm s.r.o.
+ Copyright (c) 2012 Other contributors as noted in the AUTHORS file
+
+ This file is part of Crossroads I/O project.
+
+ Crossroads I/O is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Crossroads is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "testutil.hpp"
+
+int XS_TEST_MAIN ()
+{
+ int rc;
+ char buf [32];
+
+ fprintf (stderr, "shutdown test running...\n");
+
+ // Create infrastructure.
+ void *ctx = xs_init ();
+ assert (ctx);
+ void *push = xs_socket (ctx, XS_PUSH);
+ assert (push);
+ int push_id = xs_bind (push, "tcp://127.0.0.1:5560");
+ assert (push_id != -1);
+ void *pull = xs_socket (ctx, XS_PULL);
+ assert (pull);
+ rc = xs_connect (pull, "tcp://127.0.0.1:5560");
+ assert (rc != -1);
+
+ // Pass one message through to ensure the connection is established.
+ rc = xs_send (push, "ABC", 3, 0);
+ assert (rc == 3);
+ rc = xs_recv (pull, buf, sizeof (buf), 0);
+ assert (rc == 3);
+
+ // Shut down the bound endpoint.
+ rc = xs_shutdown (push, push_id);
+ assert (rc == 0);
+ sleep (1);
+
+ // Check that sending would block (there's no outbound connection).
+ rc = xs_send (push, "ABC", 3, XS_DONTWAIT);
+ assert (rc == -1 && xs_errno () == EAGAIN);
+
+ // Clean up.
+ rc = xs_close (pull);
+ assert (rc == 0);
+ rc = xs_close (push);
+ assert (rc == 0);
+ rc = xs_term (ctx);
+ assert (rc == 0);
+
+ // Now the other way round.
+
+ // Create infrastructure.
+ ctx = xs_init ();
+ assert (ctx);
+ pull = xs_socket (ctx, XS_PULL);
+ assert (pull);
+ rc = xs_bind (pull, "tcp://127.0.0.1:5560");
+ assert (rc != -1);
+ push = xs_socket (ctx, XS_PUSH);
+ assert (push);
+ push_id = xs_connect (push, "tcp://127.0.0.1:5560");
+ assert (push_id != -1);
+
+ // Pass one message through to ensure the connection is established.
+ rc = xs_send (push, "ABC", 3, 0);
+ assert (rc == 3);
+ rc = xs_recv (pull, buf, sizeof (buf), 0);
+ assert (rc == 3);
+
+ // Shut down the bound endpoint.
+ rc = xs_shutdown (push, push_id);
+ assert (rc == 0);
+ sleep (1);
+
+ // Check that sending would block (there's no outbound connection).
+ rc = xs_send (push, "ABC", 3, XS_DONTWAIT);
+ assert (rc == -1 && xs_errno () == EAGAIN);
+
+ // Clean up.
+ rc = xs_close (pull);
+ assert (rc == 0);
+ rc = xs_close (push);
+ assert (rc == 0);
+ rc = xs_term (ctx);
+ assert (rc == 0);
+
+ return 0;
+}
diff --git a/tests/shutdown_stress.cpp b/tests/shutdown_stress.cpp
index f106cc0..2b598a9 100644
--- a/tests/shutdown_stress.cpp
+++ b/tests/shutdown_stress.cpp
@@ -30,7 +30,7 @@ extern "C"
int rc;
rc = xs_connect (s_, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// Start closing the socket while the connecting process is underway.
rc = xs_close (s_);
@@ -65,7 +65,7 @@ int XS_TEST_MAIN ()
assert (s1);
rc = xs_bind (s1, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
for (i = 0; i != THREAD_COUNT; i++) {
s2 = xs_socket (ctx, XS_SUB);
diff --git a/tests/sub_forward.cpp b/tests/sub_forward.cpp
index 6d385de..0237352 100644
--- a/tests/sub_forward.cpp
+++ b/tests/sub_forward.cpp
@@ -32,23 +32,23 @@ int XS_TEST_MAIN ()
void *xpub = xs_socket (ctx, XS_XPUB);
assert (xpub);
int rc = xs_bind (xpub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
void *xsub = xs_socket (ctx, XS_XSUB);
assert (xsub);
rc = xs_bind (xsub, "tcp://127.0.0.1:5561");
- assert (rc == 0);
+ assert (rc != -1);
// Create a publisher.
void *pub = xs_socket (ctx, XS_PUB);
assert (pub);
rc = xs_connect (pub, "tcp://127.0.0.1:5561");
- assert (rc == 0);
+ assert (rc != -1);
// Create a subscriber.
void *sub = xs_socket (ctx, XS_SUB);
assert (sub);
rc = xs_connect (sub, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
// Subscribe for all messages.
rc = xs_setsockopt (sub, XS_SUBSCRIBE, "", 0);
diff --git a/tests/survey.cpp b/tests/survey.cpp
index 9347e2d..f21b217 100644
--- a/tests/survey.cpp
+++ b/tests/survey.cpp
@@ -33,23 +33,23 @@ int XS_TEST_MAIN ()
void *xsurveyor = xs_socket (ctx, XS_XSURVEYOR);
assert (xsurveyor);
rc = xs_bind (xsurveyor, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *xrespondent = xs_socket (ctx, XS_XRESPONDENT);
assert (xrespondent);
rc = xs_bind (xrespondent, "inproc://b");
- assert (rc == 0);
+ assert (rc != -1);
void *surveyor = xs_socket (ctx, XS_SURVEYOR);
assert (surveyor);
rc = xs_connect (surveyor, "inproc://b");
- assert (rc == 0);
+ assert (rc != -1);
void *respondent1 = xs_socket (ctx, XS_RESPONDENT);
assert (respondent1);
rc = xs_connect (respondent1, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
void *respondent2 = xs_socket (ctx, XS_RESPONDENT);
assert (respondent2);
rc = xs_connect (respondent2, "inproc://a");
- assert (rc == 0);
+ assert (rc != -1);
// Send the survey.
rc = xs_send (surveyor, "ABC", 3, 0);
diff --git a/tests/tests.cpp b/tests/tests.cpp
index 3d7951c..da034e6 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -115,6 +115,10 @@
#include "survey.cpp"
#undef XS_TEST_MAIN
+#define XS_TEST_MAIN shutdown
+#include "shutdown.cpp"
+#undef XS_TEST_MAIN
+
int main ()
{
int rc;
@@ -161,6 +165,8 @@ int main ()
assert (rc == 0);
rc = survey ();
assert (rc == 0);
+ rc = shutdown ()
+ assert (rc == 0);
fprintf (stderr, "SUCCESS\n");
sleep (1);
diff --git a/tests/timeo.cpp b/tests/timeo.cpp
index bc73eec..fb17c85 100644
--- a/tests/timeo.cpp
+++ b/tests/timeo.cpp
@@ -30,7 +30,7 @@ extern "C"
void *sc = xs_socket (ctx_, XS_PUSH);
assert (sc);
int rc = xs_connect (sc, "inproc://timeout_test");
- assert (rc == 0);
+ assert (rc != -1);
sleep (1);
rc = xs_close (sc);
assert (rc == 0);
@@ -48,7 +48,7 @@ int XS_TEST_MAIN ()
void *sb = xs_socket (ctx, XS_PULL);
assert (sb);
int rc = xs_bind (sb, "inproc://timeout_test");
- assert (rc == 0);
+ assert (rc != -1);
// Check whether non-blocking recv returns immediately.
char buf [] = "12345678ABCDEFGH12345678abcdefgh";
@@ -90,7 +90,7 @@ int XS_TEST_MAIN ()
rc = xs_setsockopt(sb, XS_SNDTIMEO, &timeout, timeout_size);
assert (rc == 0);
rc = xs_connect (sc, "inproc://timeout_test");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_send (sc, buf, 32, 0);
assert (rc == 32);
rc = xs_recv (sb, buf, 32, 0);
diff --git a/tests/wireformat.cpp b/tests/wireformat.cpp
index 1177798..f3e0f96 100644
--- a/tests/wireformat.cpp
+++ b/tests/wireformat.cpp
@@ -50,9 +50,9 @@ int XS_TEST_MAIN ()
// Bind the peer and get the message.
int rc = xs_bind (pull, "tcp://127.0.0.1:5560");
- assert (rc == 0);
+ assert (rc != -1);
rc = xs_bind (push, "tcp://127.0.0.1:5561");
- assert (rc == 0);
+ assert (rc != -1);
// Connect to the peer using raw sockets.
int rpush = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);