注意事项：
"wss://localhost:8000/websocket"; 对于 wss 域名，mongoose不支持，需要使用 ws 域名。
原因：wss域名需要证书授权认证。
#include "mongoose.h"
static const char *s_url = "ws://localhost:8000/websocket";
// Print websocket response and signal that we're done static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) { if (ev == MG_EV_ERROR) { // On error, log error message LOG(LL_ERROR, ("%p %s", c->fd, (char *) ev_data)); } else if (ev == MG_EV_WS_OPEN) { // When websocket handshake is successful, send message mg_ws_send(c, "hello", 5, WEBSOCKET_OP_TEXT); } else if (ev == MG_EV_WS_MSG) { // When we get echo response, print it struct mg_ws_message *wm = (struct mg_ws_message *) ev_data; printf("GOT ECHO REPLY: [%.*s]\n", (int) wm->data.len, wm->data.ptr); }
if (ev == MG_EV_ERROR || ev == MG_EV_CLOSE || ev == MG_EV_WS_MSG) { *(bool *) fn_data = true; // Signal that we're done } }
int main(void) { struct mg_mgr mgr; // Event manager bool done = false; // Event handler flips it to true struct mg_connection *c; // Client connection mg_mgr_init(&mgr); // Initialise event manager c = mg_ws_connect(&mgr, s_url, fn, &done, NULL); // Create client while (c && done == false) mg_mgr_poll(&mgr, 1000); // Wait for echo mg_mgr_free(&mgr); // Deallocate resources return 0; }
