mirror of
https://github.com/zeromq/libzmq.git
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274 lines
8.4 KiB
C++
274 lines
8.4 KiB
C++
/*
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Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "testutil.hpp"
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// ZMTP protocol greeting structure
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typedef unsigned char byte;
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typedef struct {
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byte signature [10]; // 0xFF 8*0x00 0x7F
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byte version [2]; // 0x03 0x00 for ZMTP/3.0
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byte mechanism [20]; // "NULL"
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byte as_server;
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byte filler [31];
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} zmtp_greeting_t;
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#define ZMTP_DEALER 5 // Socket type constants
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// This is a greeting matching what 0MQ will send us; note the
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// 8-byte size is set to 1 for backwards compatibility
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static zmtp_greeting_t greeting
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= { { 0xFF, 0, 0, 0, 0, 0, 0, 0, 1, 0x7F }, { 3, 0 }, { 'N', 'U', 'L', 'L'}, 0, { 0 } };
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static void
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test_stream_to_dealer (void)
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{
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int rc;
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// Set up our context and sockets
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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// We'll be using this socket in raw mode
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void *stream = zmq_socket (ctx, ZMQ_STREAM);
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assert (stream);
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int zero = 0;
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rc = zmq_setsockopt (stream, ZMQ_LINGER, &zero, sizeof (zero));
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assert (rc == 0);
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rc = zmq_bind (stream, "tcp://127.0.0.1:5556");
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assert (rc == 0);
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// We'll be using this socket as the other peer
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void *dealer = zmq_socket (ctx, ZMQ_DEALER);
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assert (dealer);
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rc = zmq_setsockopt (dealer, ZMQ_LINGER, &zero, sizeof (zero));
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assert (rc == 0);
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rc = zmq_connect (dealer, "tcp://localhost:5556");
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// Send a message on the dealer socket
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rc = zmq_send (dealer, "Hello", 5, 0);
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assert (rc == 5);
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// Connecting sends a zero message
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// First frame is identity
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zmq_msg_t identity;
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rc = zmq_msg_init (&identity);
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assert (rc == 0);
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rc = zmq_msg_recv (&identity, stream, 0);
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assert (rc > 0);
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assert (zmq_msg_more (&identity));
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// Second frame is zero
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byte buffer [255];
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rc = zmq_recv (stream, buffer, 255, 0);
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assert (rc == 0);
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// Real data follows
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// First frame is identity
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rc = zmq_msg_recv (&identity, stream, 0);
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assert (rc > 0);
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assert (zmq_msg_more (&identity));
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// Second frame is greeting signature
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rc = zmq_recv (stream, buffer, 255, 0);
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assert (rc == 10);
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assert (memcmp (buffer, greeting.signature, 10) == 0);
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// Send our own protocol greeting
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rc = zmq_msg_send (&identity, stream, ZMQ_SNDMORE);
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assert (rc > 0);
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rc = zmq_send (stream, &greeting, sizeof (greeting), 0);
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assert (rc == sizeof (greeting));
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// Now we expect the data from the DEALER socket
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// We want the rest of greeting along with the Ready command
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int bytes_read = 0;
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while (bytes_read < 97) {
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// First frame is the identity of the connection (each time)
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rc = zmq_msg_recv (&identity, stream, 0);
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assert (rc > 0);
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assert (zmq_msg_more (&identity));
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// Second frame contains the next chunk of data
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rc = zmq_recv (stream, buffer + bytes_read, 255 - bytes_read, 0);
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assert (rc >= 0);
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bytes_read += rc;
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}
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// First two bytes are major and minor version numbers.
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assert (buffer [0] == 3); // ZMTP/3.0
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assert (buffer [1] == 0);
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// Mechanism is "NULL"
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assert (memcmp (buffer + 2, "NULL\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 20) == 0);
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assert (memcmp (buffer + 54, "\4\51\5READY", 8) == 0);
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assert (memcmp (buffer + 62, "\13Socket-Type\0\0\0\6DEALER", 22) == 0);
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assert (memcmp (buffer + 84, "\10Identity\0\0\0\0", 13) == 0);
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// Announce we are ready
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memcpy (buffer, "\4\51\5READY", 8);
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memcpy (buffer + 8, "\13Socket-Type\0\0\0\6ROUTER", 22);
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memcpy (buffer + 30, "\10Identity\0\0\0\0", 13);
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// Send Ready command
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rc = zmq_msg_send (&identity, stream, ZMQ_SNDMORE);
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assert (rc > 0);
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rc = zmq_send (stream, buffer, 43, 0);
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assert (rc == 43);
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// Now we expect the data from the DEALER socket
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// First frame is, again, the identity of the connection
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rc = zmq_msg_recv (&identity, stream, 0);
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assert (rc > 0);
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assert (zmq_msg_more (&identity));
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// Third frame contains Hello message from DEALER
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rc = zmq_recv (stream, buffer, sizeof buffer, 0);
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assert (rc == 7);
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// Then we have a 5-byte message "Hello"
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assert (buffer [0] == 0); // Flags = 0
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assert (buffer [1] == 5); // Size = 5
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assert (memcmp (buffer + 2, "Hello", 5) == 0);
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// Send "World" back to DEALER
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rc = zmq_msg_send (&identity, stream, ZMQ_SNDMORE);
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assert (rc > 0);
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byte world [] = { 0, 5, 'W', 'o', 'r', 'l', 'd' };
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rc = zmq_send (stream, world, sizeof (world), 0);
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assert (rc == sizeof (world));
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// Expect response on DEALER socket
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rc = zmq_recv (dealer, buffer, 255, 0);
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assert (rc == 5);
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assert (memcmp (buffer, "World", 5) == 0);
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rc = zmq_close (dealer);
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assert (rc == 0);
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rc = zmq_close (stream);
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assert (rc == 0);
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rc = zmq_ctx_term (ctx);
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assert (rc == 0);
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}
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static void
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test_stream_to_stream (void)
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{
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int rc;
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// Set-up our context and sockets
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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void *server = zmq_socket (ctx, ZMQ_STREAM);
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assert (server);
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rc = zmq_bind (server, "tcp://127.0.0.1:9070");
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assert (rc == 0);
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void *client = zmq_socket (ctx, ZMQ_STREAM);
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assert (client);
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rc = zmq_connect (client, "tcp://localhost:9070");
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assert (rc == 0);
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uint8_t id [256];
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size_t id_size = 256;
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uint8_t buffer [256];
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// Connecting sends a zero message
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// Server: First frame is identity, second frame is zero
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id_size = zmq_recv (server, id, 256, 0);
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assert (id_size > 0);
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rc = zmq_recv (server, buffer, 256, 0);
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assert (rc == 0);
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// Client: First frame is identity, second frame is zero
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id_size = zmq_recv (client, id, 256, 0);
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assert (id_size > 0);
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rc = zmq_recv (client, buffer, 256, 0);
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assert (rc == 0);
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// Sent HTTP request on client socket
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// Get server identity
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rc = zmq_getsockopt (client, ZMQ_IDENTITY, id, &id_size);
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assert (rc == 0);
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// First frame is server identity
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rc = zmq_send (client, id, id_size, ZMQ_SNDMORE);
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assert (rc == (int) id_size);
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// Second frame is HTTP GET request
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rc = zmq_send (client, "GET /\n\n", 7, 0);
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assert (rc == 7);
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// Get HTTP request; ID frame and then request
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id_size = zmq_recv (server, id, 256, 0);
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assert (id_size > 0);
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rc = zmq_recv (server, buffer, 256, 0);
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assert (rc != -1);
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assert (memcmp (buffer, "GET /\n\n", 7) == 0);
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// Send reply back to client
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char http_response [] =
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"HTTP/1.0 200 OK\r\n"
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"Content-Type: text/plain\r\n"
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"\r\n"
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"Hello, World!";
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rc = zmq_send (server, id, id_size, ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_send (server, http_response, sizeof (http_response), ZMQ_SNDMORE);
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assert (rc != -1);
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// Send zero to close connection to client
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rc = zmq_send (server, id, id_size, ZMQ_SNDMORE);
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assert (rc != -1);
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rc = zmq_send (server, NULL, 0, ZMQ_SNDMORE);
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assert (rc != -1);
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// Get reply at client and check that it's complete
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id_size = zmq_recv (client, id, 256, 0);
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assert (id_size > 0);
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rc = zmq_recv (client, buffer, 256, 0);
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assert (rc == sizeof (http_response));
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assert (memcmp (buffer, http_response, sizeof (http_response)) == 0);
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// // Get disconnection notification
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// FIXME: why does this block? Bug in STREAM disconnect notification?
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// id_size = zmq_recv (client, id, 256, 0);
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// assert (id_size > 0);
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// rc = zmq_recv (client, buffer, 256, 0);
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// assert (rc == 0);
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rc = zmq_close (server);
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assert (rc == 0);
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rc = zmq_close (client);
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assert (rc == 0);
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rc = zmq_ctx_term (ctx);
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assert (rc == 0);
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}
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int main (void)
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{
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setup_test_environment();
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test_stream_to_dealer ();
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test_stream_to_stream ();
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}
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