c语言websocket发送图片
创始人
2025-01-08 04:35:01
0次

C语言实现WebSocket发送图片的详细教程

引言

WebSocket协议为Web应用程序提供了一种在单个长连接上双向传输数据的机制。使用C语言开发WebSocket服务器，可以与多种客户端进行交互，实现复杂的功能，如实时图像传输。本文将详细介绍如何使用C语言和WebSocket协议发送图片。

前提条件

在开始之前，请确保您已经满足以下条件：

c语言websocket发送图片

  1. 熟悉C语言编程。
  2. 了解网络编程的基本概念，如TCP/IP协议。
  3. 已安装C编译器和WebSocket库。

本文使用开源WebSocket库libwebsockets，它支持C语言编写WebSocket服务器和客户端。

准备环境

  1. 下载libwebsockets库：libwebsockets
  2. 解压并进入libwebsockets库的源码目录。
  3. 安装依赖库：sudo apt-get install libssl-dev libevent-dev libev-dev
  4. 编译库：./autogen.sh，然后./configure，最后make。

实现WebSocket服务器

以下是使用C语言和libwebsockets库实现WebSocket服务器的步骤：

  1. 初始化WebSocket服务器：

#include 

int server_callback(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) {
    switch (reason) {
        case LWS_CALLBACK_HANDSHAKE: // 处理握手请求
            break;
        case LWS_CALLBACK_ESTABLISHED: // 建立连接
            break;
        case LWS_CALLBACK_RECEIVE: // 接收客户端消息
            break;
        case LWS_CALLBACK_CLOSED: // 连接关闭
            break;
        default:
            break;
    }
    return 0;
}

int main(int argc, char **argv) {
    struct lws_context_creation_info info;
    struct lws_context *context;
    const char *port = "8080";

    memset(&info, 0, sizeof(info));
    info.port = 8080;
    info.mounts = "/ws";
    info.mounts = "/ws";
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    info.mounts = "/

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