网络通信之tcp编程
来源:互联网 发布:windows 光盘镜像 编辑:程序博客网 时间:2024/06/06 03:09
代码:
服务端
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <netinet/in.h>
#include <errno.h>
int main(int argc, char **argv)
{
int fd, client_fd;
struct sockaddr_in localadd, remoteadd;
int ret;
char buf[1024];
int len;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0)
{
printf("socker() error!\n");
goto exit;
}
localadd.sin_family = AF_INET;
localadd.sin_port = htons(5000);
localadd.sin_addr.s_addr = htonl(INADDR_ANY);
len = sizeof(localadd);
ret = bind(fd, (struct sockaddr *)&localadd, len);
if (ret < 0)
{
printf("bind() error!\n");
goto exit;
}
ret = listen(fd, 5);
if (ret < 0)
{
printf("listen() error!\n");
goto exit;
}
len = sizeof(remoteadd);
client_fd = accept(fd, (struct sockaddr *)&remoteadd, &len);
if ( client_fd < 0)
{
printf("accept() error!\n");
goto exit;
}
else
{
printf("server recieve connect!\n");
}
while (1)
{
printf("waiting for ...\n");
fflush(stdout);
ret = recv(client_fd, (void *)buf, 1024, 0);
if (ret < 0)
{
printf("server recieve data failed!\n");
}
else
{
printf("server read lind: %s\n", buf);
}
memset(buf, 0x00, sizeof(buf));
printf("you send msg:");
scanf("%s", buf);
if (strcmp(buf, "exit") == 0)
{
printf("exit server\n");
goto exit;
}
sleep(1);
ret = send(client_fd, (void *)buf, strlen(buf), 0);
if (ret < 0)
{
printf("server send() error!\n");
}
memset(buf, 0x00, sizeof(buf));
}
exit:
close(client_fd);
printf("close client\n");
return 0;
}
客服端:
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
int main(int argc, char **argv)
{
int fd;
int ret;
struct sockaddr_in remoteaddr;
char buf[1024];
int len;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0)
{
printf("socker() error!\n");
goto exit;
}
remoteaddr.sin_family = AF_INET;
remoteaddr.sin_port = htons(5000);
remoteaddr.sin_addr.s_addr = inet_addr("192.168.1.229");
len = sizeof(remoteaddr);
ret = connect(fd, (struct sockaddr *)&remoteaddr, len);
if (ret < 0)
{
printf("connect() error!\n");
goto exit;
}
while (1)
{
printf("you send msg:");
scanf("%s", buf);
if (strcmp(buf, "exit") == 0)
{
printf("exit server\n");
goto exit;
}
sleep(1);
ret = send(fd, (void *)buf, strlen(buf), 0);
if (ret < 0)
{
printf("server send() error!\n");
}
bzero(buf, 1024);
ret = recv(fd, (void *)buf, 1024, 0);
if (ret < 0)
{
printf("server recieve data failed!\n");
}
else
{
printf("server read lind: %s\n", buf);
}
bzero(buf, 1024);
}
exit:
close(fd);
return 0;
}
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