MSVC 2015 project for compile libzmq.dll in WinXP compatible mode

builds/msvc/vs2015_xp/platform.hpp

+#ifndef __PLATFORM_HPP_INCLUDED__
+#define __PLATFORM_HPP_INCLUDED__
+
+#define ZMQ_HAVE_WINDOWS
+#define ZMQ_HAVE_WINDOWS_TARGET_XP
+
+#define ZMQ_BUILD_DRAFT_API
+
+#define ZMQ_USE_SELECT
+#define FD_SETSIZE 1024
+
+#pragma comment(lib,"ws2_32.lib")
+#pragma comment(lib,"Iphlpapi.lib")
+
+#endif

builds/msvc/vs2015_xp/test_zmq/test_multithread.cpp

+/*
+Server thread listen ZMQ_SERVER socket and transfer incoming message 
+to worker threads by ZMQ_PUSH-ZMQ_PULL
+Worker thread receive message and send back to ZMQ_SERVER socket
+
+Each client thread open CLIENT_CONNECTION ZMQ_CLIENT sockets, 
+send random size message to each socket and check server answer
+*/
+
+#define ZMQ_BUILD_DRAFT_API
+#include "../../../../include/zmq.h"
+
+#pragma comment(lib,"libzmq.lib")
+
+#include <assert.h>
+#include <stdlib.h>
+#include <thread>
+#include <atomic>
+
+#define SERVER_ADDR "tcp://127.0.0.1:12345"
+#define SERVER_WORKER_COUNT 3	// worker threads count
+
+#define CLIENT_COUNT 5			// client threads count
+#define CLIENT_CONNECTION 100	// ZMQ_CLIENT sockets at each client
+#define CLIENT_RECCONECT 1000	// reconnect one socket after messages
+
+#define MESSAGE_MAX_SIZE 1024
+
+//*******************************************************************
+//****** MESSAGE ****************************************************
+//*******************************************************************
+
+void message_fill(zmq_msg_t* msg, int val) {
+	assert(val > 0);
+	int size = sizeof(int) * 2 + val;
+	int rc = zmq_msg_init_size(msg, size); assert(rc == 0);
+	uint8_t* data = (uint8_t*)zmq_msg_data(msg);
+	memcpy(data, &val, sizeof(int));
+	data += sizeof(int);
+	memset(data, val & 0xFF, val);
+	int check_sum = val + (val & 0xFF) * val;
+	data += val;
+	memcpy(data, &check_sum, sizeof(int));
+}
+
+int message_check(zmq_msg_t* msg) {
+	uint8_t* data = (uint8_t*)zmq_msg_data(msg);
+	int size = zmq_msg_size(msg);
+	assert(size > sizeof(int) * 2);
+	// check size
+	int val;
+	memcpy(&val, data, sizeof(int));
+	if(size != sizeof(int) * 2 + val) { 
+		fprintf(stderr, "wrong message: val = %d size = %d\n", val, size);
+		return -1;
+	}
+	// check sum
+	data += sizeof(int);
+	int cs = val;
+	for(int i = 0; i < val; i++) {
+		cs += data[i];
+	}
+	data += val;
+	int check_sum;
+	memcpy(&check_sum, data, sizeof(int));
+	if(check_sum != cs) {
+		fprintf(stderr, "wrong message: cs = %d check_sum = %d\n", cs, check_sum);
+		return -1;
+	}
+	return val;
+}
+
+//*******************************************************************
+//****** SERVER *****************************************************
+//*******************************************************************
+
+void *server_ctx = NULL;
+void *server_sock = NULL;
+
+std::atomic<int> worker_cnt[SERVER_WORKER_COUNT] = {0}; // statistic
+
+// worker thread
+void worker(int num) {
+	printf("worker %d start\n", num);
+	void* queue = zmq_socket(server_ctx, ZMQ_PULL); assert(queue);
+	int rc = zmq_connect(queue, "inproc://queue"); assert(rc == 0);
+
+	while (1) {
+		// receive messages from the queue
+		zmq_msg_t msg;
+		rc = zmq_msg_init(&msg); assert(rc == 0);
+		rc = zmq_msg_recv(&msg, queue, 0); assert(rc > 0);
+		// check message
+		//printf("worker %d recv %d bytes at %X from %X\n", num, zmq_msg_size(&msg), zmq_msg_data(&msg), zmq_msg_routing_id(&msg));
+		// send to client
+		rc = zmq_msg_send(&msg, server_sock, 0); assert(rc != -1);
+		worker_cnt[num]++;
+	}
+	zmq_close(queue);
+}
+
+// server thread
+void server() {
+	server_ctx = zmq_ctx_new(); assert(server_ctx);
+	// create queue
+	void* queue = zmq_socket(server_ctx, ZMQ_PUSH);	assert(queue);
+	int rc = zmq_bind(queue, "inproc://queue"); assert(rc == 0);
+	// start workers
+	std::thread w[SERVER_WORKER_COUNT];
+	for (int i = 0; i < SERVER_WORKER_COUNT; i++) w[i] = std::thread(worker, i);
+	// ZMQ_SERVER for client messages
+	server_sock = zmq_socket(server_ctx, ZMQ_SERVER); assert(server_sock);
+	rc = zmq_bind(server_sock, SERVER_ADDR); assert(rc == 0);
+
+	while (1) {
+		// wait client message
+		zmq_msg_t msg;
+		rc = zmq_msg_init(&msg); assert(rc == 0); 
+		rc = zmq_msg_recv(&msg, server_sock, 0); assert(rc > 0);
+		//printf("recv %d bytes at %X from %X\n", zmq_msg_size(&msg), zmq_msg_data(&msg), zmq_msg_routing_id(&msg));
+		// send message to queue
+		rc = zmq_msg_send(&msg, queue, 0); assert(rc > 0);
+	}
+}
+
+//*******************************************************************
+//****** CLIENT *****************************************************
+//*******************************************************************
+
+std::atomic<int> client_cnt[CLIENT_COUNT] = { 0 }; // statistic
+std::atomic<int> client_ready = 0; 
+
+// client thread
+void client(int num)
+{
+	//printf("client %d start. Open %d connections\n", num, CLIENT_CONNECTION);
+
+	void *ctx = zmq_ctx_new(); assert(ctx);
+
+	void *sock[CLIENT_CONNECTION];
+	int rc;
+	// open ZMQ_CLIENT connections
+	for (int i = 0; i < CLIENT_CONNECTION; i++) {
+		sock[i] = zmq_socket(ctx, ZMQ_CLIENT); assert(sock[i]);
+		rc = zmq_connect(sock[i], SERVER_ADDR); assert(rc == 0);
+		// test connection
+		zmq_msg_t msg;
+		int v = rand() % 256 + 1;
+		message_fill(&msg, v);
+		rc = zmq_msg_send(&msg, sock[i], 0); assert(rc > 0);
+		rc = zmq_msg_init(&msg); assert(rc == 0);
+		rc = zmq_msg_recv(&msg, sock[i], 0); assert(rc > 0);
+		rc = message_check(&msg); assert(rc == v);
+		zmq_msg_close(&msg);
+	}
+	printf("client %d open %d connections\n", num, CLIENT_CONNECTION);
+	client_ready++;
+	while (client_ready < CLIENT_COUNT) Sleep(10); // wait while all clients open sockets
+
+	int recconect = 0;
+	while(1) {
+		int val[CLIENT_CONNECTION];
+		zmq_msg_t msg;
+		// send messages
+		for(int i = 0; i < CLIENT_CONNECTION; i++) {
+			val[i] = rand() % MESSAGE_MAX_SIZE + 1;
+			message_fill(&msg, val[i]);
+			rc = zmq_msg_send(&msg, sock[i], 0); assert(rc > 0);
+		}
+		// recv and check
+		for (int i = 0; i < CLIENT_CONNECTION; i++) {
+			rc = zmq_msg_init(&msg); assert(rc == 0);
+			rc = zmq_msg_recv(&msg, sock[i], 0); assert(rc > 0);
+			rc = message_check(&msg);
+			if(rc != val[i] && rc > 0) {
+				fprintf(stderr, "wrong message: send %d recv %d     \n", val[i], rc);
+			}
+			zmq_msg_close(&msg);
+			client_cnt[num]++;
+		}
+		// reconnect one
+		recconect++;
+		if(recconect == CLIENT_RECCONECT) {
+			int n = rand() % CLIENT_CONNECTION;
+			zmq_close(sock[n]);
+			sock[n] = zmq_socket(ctx, ZMQ_CLIENT); assert(sock[n]);
+			int rc = zmq_connect(sock[n], SERVER_ADDR); assert(rc == 0);
+		}
+	}
+}
+
+//*******************************************************************
+int main (void) {
+	int v1, v2, v3; zmq_version(&v1, &v2, &v3);
+	printf("ZMQ version %d.%d.%d. Compile %s %s\n", v1, v2, v3, __DATE__, __TIME__);
+
+	std::thread ct[CLIENT_COUNT];
+	for (int i = 0; i < CLIENT_COUNT; i++) ct[i] = std::thread(client, i);
+
+	std::thread st(server);
+
+	int w[SERVER_WORKER_COUNT] = { 0 };
+	int c[CLIENT_COUNT] = { 0 };
+	int total = 0;
+
+	while(1) {
+		Sleep(1000);
+		if (client_ready < CLIENT_COUNT) continue;
+		// check workers
+		for(int i = 0; i < SERVER_WORKER_COUNT; i++) {
+			if(w[i] == worker_cnt[i]) {
+				fprintf(stderr, "worker %d not work        \n", i);
+			}
+			w[i] = worker_cnt[i];
+		}
+		// check clients
+		int t = 0;
+		for (int i = 0; i < CLIENT_COUNT; i++) {
+			if (c[i] == client_cnt[i]) {
+				fprintf(stderr, "client %d not work        \n", i);
+			}
+			c[i] = client_cnt[i];
+			t += c[i];
+		}
+		printf("\rTotal %d messages. Speed %d per second  ", t, t - total);
+		total = t;
+	}
+	return 0;
+}

builds/msvc/vs2015_xp/test_zmq/test_zmq.vcxproj

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