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This project forked from rockcarry/ping
+--------------+ ping 程序说明 +--------------+ ping 是常用的一个网络连通性检测的工具 ping 的原理是通过 ICMP 协议发送“回显请求报文”,并获取对方主机的应答,来判断网络连通状态 在 windows 和 linux 的命令行或控制台,都可以直接使用 ping 命令 但是在 C 语言中要使用 ping 却没有现成的库函数或者 API 本程序通过 C 语言实现了 ping 的功能,代码可以在 VC++, msys2 gcc, linux gcc 下编译通过 接口说明 -------- typedef void (*PFN_PING_CALLBACK)(void *cbctx, char *ip, int bytes, int ttl, int time, int seq); 回调函数,接收到对方主机的 ping 应答后会调用此回调函数 void* ping_init(int interval, int timeout, PFN_PING_CALLBACK callback, void *cbctx); 初始化并返回一个 context 指针(以下的接口都需要传入这个指针,不赘述) interval 指定 ping 发送报文的周期,以 ms 为单位 timeout 指定一个超时,如果在这个超时时间内没有收到应答,ping_isok 将返回 0 表示跟对方主机断开 callback 和 cbctx 为回调函数指针和回调的 context void ping_exit(void *ctx); // 反初始化 void ping_run(void *ctx, char *ip, int start); 执行 ping 操作,ip 为要 ping 的主机 ip 地址,start 为 1 表示开始,0 表示停止 ping int ping_isok(void *ctx); 判断跟对方主机是否连通 [email protected] 2021-5-6
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