客戶端:發送
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/shm.h>
#define MYPORT 8887
#define BUFFER_SIZE 1024
int main()
{
///定義sockfd
int sock_cli = socket(AF_INET,SOCK_STREAM, 0);
///定義sockaddr_in
struct sockaddr_in servaddr;
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(MYPORT); ///服務器端口
servaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); ///服務器ip
///連接服務器,成功返回0,錯誤返回-1
if (connect(sock_cli, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0)
{
perror("connect");
exit(1);
}
char sendbuf[BUFFER_SIZE]="abcde";
while (1)
{
send(sock_cli, sendbuf, strlen(sendbuf),0); ///發送
sleep(1);
memset(sendbuf, 0, sizeof(sendbuf));
}
close(sock_cli);
return 0;
}
服務端:接收
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/shm.h>
#define MYPORT 8887
#define QUEUE 20
#define BUFFER_SIZE 1024
int main()
{
///定義sockfd
int server_sockfd = socket(AF_INET,SOCK_STREAM, 0);
///定義sockaddr_in
struct sockaddr_in server_sockaddr;
server_sockaddr.sin_family = AF_INET;
server_sockaddr.sin_port = htons(MYPORT);
server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);
///bind,成功返回0,出錯返回-1
if(bind(server_sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-1)
{
perror("bind");
exit(1);
}
///listen,成功返回0,出錯返回-1
if(listen(server_sockfd,QUEUE) == -1)
{
perror("listen");
exit(1);
}
///客戶端套接字
char buffer[BUFFER_SIZE];
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
///成功返回非負描述字,出錯返回-1
int conn = accept(server_sockfd, (struct sockaddr*)&client_addr, &length);
if(conn<0)
{
perror("connect");
exit(1);
}
while(1)
{
memset(buffer,0,sizeof(buffer));
int len = recv(conn, buffer, sizeof(buffer),0);
printf("Recv dataLen = %d\n",len);
}
close(conn);
close(server_sockfd);
return 0;
}