Question

如何用C在Linux下监听多个端口

Answer 1

* File: main.c
* Author: root
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdbool.h>
#include "Utility.h"
//多路复用，一个server绑定多个端口，处理多个服务
int main(int argc, char** argv) {
if(argc<3)
{ //参数验证
DieWithUserMessage("param","<timeout(sec.)> <port/service>...");
}
long timeout=atol(argv[1]);
int noPorts=argc-2;
int server_socks[noPorts];
int maxDescriptor=-1;
for(int port=0;port<noPorts;port++)
{
//后面的参数全部是端口，建立socket
server_socks[port]=SetupTCPServerSocket(argv[port+2]);
//选择最大的sock描述符
if(server_socks[port]>maxDescriptor)
maxDescriptor=server_socks[port];