Linux c++中实现websocket客户端和服务端
时间: 2023-11-01 08:07:34 浏览: 125
客户端服务端数据传输可执行程序
在Linux C++中实现WebSocket客户端和服务端,需要使用第三方库来处理WebSocket协议的数据帧的解析和封装。以下是一些常用的WebSocket库:
- libwebsockets:这是一个轻量级、高性能的C库,支持WebSocket客户端和服务端,以及HTTP客户端和服务端。它还支持SSL和TLS加密协议。
- WebSocket++:这是一个C++的WebSocket库,支持WebSocket客户端和服务端,以及TLS加密协议。它还提供了一些高级功能,如消息压缩和自定义协议扩展。
- Boost.Beast:这是Boost库中一个HTTP和WebSocket库,支持WebSocket客户端和服务端,以及SSL加密协议。它提供了一个简单的API来处理WebSocket协议的数据帧。
下面是一个简单的示例代码,演示如何使用libwebsockets库实现一个WebSocket客户端和服务端:
```c++
// WebSocket客户端
#include <libwebsockets.h>
int main() {
struct lws_context_creation_info info;
struct lws_client_connect_info connect_info;
struct lws *wsi = NULL;
const char *address = "ws://localhost:8080";
memset(&info, 0, sizeof(info));
info.port = CONTEXT_PORT_NO_LISTEN;
info.protocols = NULL;
info.gid = -1;
info.uid = -1;
struct lws_context *context = lws_create_context(&info);
if (context == NULL) {
return -1;
}
memset(&connect_info, 0, sizeof(connect_info));
connect_info.context = context;
connect_info.address = address;
connect_info.port = 0;
connect_info.path = "/";
connect_info.host = lws_canonical_hostname(context);
connect_info.origin = connect_info.host;
connect_info.protocol = "chat";
connect_info.ssl_connection = 0;
wsi = lws_client_connect_via_info(&connect_info);
if (wsi == NULL) {
lws_context_destroy(context);
return -1;
}
while (true) {
lws_service(context, 50);
}
lws_context_destroy(context);
return 0;
}
// WebSocket服务端
#include <libwebsockets.h>
static int callback_echo(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) {
switch (reason) {
case LWS_CALLBACK_ESTABLISHED: {
printf("Connection established\n");
break;
}
case LWS_CALLBACK_RECEIVE: {
printf("Received data: %s\n", (char *)in);
lws_write(wsi, (unsigned char *)in, len, LWS_WRITE_TEXT);
break;
}
default:
break;
}
return 0;
}
int main() {
struct lws_context_creation_info info;
struct lws_protocols protocol;
struct lws_context *context = NULL;
memset(&info, 0, sizeof(info));
info.port = 8080;
info.protocols = &protocol;
info.gid = -1;
info.uid = -1;
memset(&protocol, 0, sizeof(protocol));
protocol.name = "chat";
protocol.callback = callback_echo;
protocol.per_session_data_size = 0;
protocol.rx_buffer_size = 0;
context = lws_create_context(&info);
if (context == NULL) {
return -1;
}
while (true) {
lws_service(context, 50);
}
lws_context_destroy(context);
return 0;
}
```
这个示例代码使用libwebsockets库分别实现了一个WebSocket客户端和服务端。在客户端中,它创建了一个WebSocket连接,并发送和接收数据。在服务端中,它监听端口8080,并接收客户端的连接请求,收到数据后将其原样发送回去。
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