socket通信代码练习——每天进步一点点

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我是靠谱客的博主开朗板凳，最近开发中收集的这篇文章主要介绍socket通信代码练习——每天进步一点点，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

/*服务器*/

#include <stdio.h>

#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

void die(char *msg)
{
perror(msg);
exit(1);
}

void copy_data(int from,int to)
{
char buf[1024];
int amount;
while((amount=read(from,buf,sizeof(buf)))>0) {
if(write(to,buf,amount) !=amount)
{
die("write");
return;
}
}
if(amount <0) die("read");
}

int main()
{
int sock,conn,i;
struct sockaddr_in addr;
size_t addr_len =sizeof(addr);
if((sock = socket(PF_INET,SOCK_STREAM,0))<0)
die("socket");

i=1;
setsocketopt(sock,SOL_SOCKET,SO_REUAEADDR,&i,sizeof(i));
memset(&addr,0,sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr=htonl(INADDR_ANY);
addr.sin_port =htons(8888);

if(bind(sock,(struct sockaddr *)&addr,sizeof(addr)))
die("blind");

if (lisetn(socket,5))
die("listen");

while((conn=accept(sock,(struct sockaddr *)&addr,&addr_len)) >=0){
printf("Accept %s:%dn",inet_ntoa(addr.sin_addr),addr.sin_port);
copy_data(conn,STDOUT_FILENO);
printf("Done!n");
close(conn);
}
return 0;

}

/*客户机*/

#include <stdil.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main(int argc,const char *argv[])
{
struct sockaddr_in addr;
int sock;
if (argc !=2){
fprintf (stderr,"need an IP addressn");
return -1;
}

memset(&addr,0,sizeof(addr));

addr.sin_family =AF_INET;
inet_aton(argv[1],&addr.sin_addr);
addr.sin_port =htons(8888);
if ((sock =socket(PF_INET,SOCK_STREAN,0)) <0{
die("socket");
}
if (connect(sock,(struct sockaddr *)&addr,sizeof(addr))){
die("connect");
}
printf("Connected!n);
copy_data(STDIN_FILENO,sock);
close(sock);
return 0;
}