基于C语言的websocket在web网页聊天室中实现qq聊天界面的成员在线列表的服务端和html网页的示例代码
时间: 2024-04-19 22:26:33 浏览: 133
使用Java和WebSocket实现网页聊天室实例代码
以下是一个示例代码,展示了如何使用C语言的WebSocket在网页聊天室中实现QQ聊天界面的成员在线列表的服务端和HTML网页。
服务端代码(使用libwebsockets库):
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libwebsockets.h>
#define MAX_CLIENTS 10
struct per_session_data {
int client_id;
};
static int callback_chat(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len)
{
struct per_session_data *pss = (struct per_session_data *)user;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
// 连接建立时,将client_id存储到pss中
pss->client_id = lws_get_socket_fd(wsi);
break;
case LWS_CALLBACK_RECEIVE:
// 接收到消息时,可以进行相应处理
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
// 服务端可写时,可以向客户端发送消息
break;
case LWS_CALLBACK_CLOSED:
// 连接关闭时,进行相应处理
break;
default:
break;
}
return 0;
}
static struct lws_protocols protocols[] = {
{ "chat", callback_chat, sizeof(struct per_session_data), 0 },
{ NULL, NULL, 0, 0 }
};
int main()
{
struct lws_context_creation_info info;
struct lws_context *context;
const char *interface = NULL;
int port = 8080;
int opts = 0;
memset(&info, 0, sizeof(info));
info.port = port;
info.iface = interface;
info.protocols = protocols;
context = lws_create_context(&info);
if (!context) {
fprintf(stderr, "Failed to create libwebsocket context\n");
return -1;
}
printf("Server started on port %d...\n", port);
while (1) {
lws_service(context, 50);
}
lws_context_destroy(context);
return 0;
}
```
HTML网页代码:
```html
<!DOCTYPE html>
<html>
<head>
<title>WebSocket Chat</title>
</head>
<body>
<div id="members-list">
<!-- 在线成员列表将动态添加到这里 -->
</div>
<script>
var socket = new WebSocket("ws://localhost:8080", "chat");
socket.onopen = function(event) {
console.log("Connected to server");
};
socket.onmessage = function(event) {
console.log("Received message: " + event.data);
};
socket.onclose = function(event) {
console.log("Connection closed");
};
</script>
</body>
</html>
```
这只是一个简单的示例,你可以根据需求进行进一步的开发和优化。希望对你有所帮助!
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