网络编程
客户端通信
代码
/*************************************************************************************
*
* file name: 1.c
* author : [email protected]
* date : 2024/06/05
* function : tcp客户端通信
* note ： none
* CopyRight (c) 2024 [email protected] All Right Reserved
*
************************************************************************************/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/udp.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/tcp.h>
#include <unistd.h>
int main(int argc,char *argv[])
{
char buf[128];
int tcp_socket = socket(AF_INET,SOCK_STREAM, 0);
if (argc != 2)
{
printf("Invalid argc");
exit(1);
}
if (tcp_socket == -1)
{
fprintf(stderr, "tcp socket error,errno:%d,%s\n",errno,strerror(errno));
exit(1);
}
struct sockaddr_in client_addr;
client_addr.sin_family = AF_INET; //协议族，是固定的
client_addr.sin_port = htons(atoi(argv[1])); //目标端口，必须转换为网络字节序
client_addr.sin_addr.s_addr = inet_addr(argv[2]); //目标地址 "192.168.64.xxx" 已经转换为网络字节序 INADDR_ANY
// bind(tcp_socket,(struct sockaddr *)&host_addr, sizeof(host_addr));
int i = connect(tcp_socket,(struct sockaddr *)&client_addr,sizeof(client_addr));
if(i<0)
{
fprintf(stderr, "connect error,errno:%d,%s\n",errno,strerror(errno));
exit(1);
}
while(1)
{
printf("请输入你需要发送的内容\n");
scanf("%s",buf);
write(tcp_socket,buf,sizeof(buf));
bzero(buf,sizeof(buf));
}
}
运行结果
