#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()

{

    ///定义sockfd

    int server_sockfd = socket(AF_INET,SOCK_STREAM, );

    ///定义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，出错返回-1

    if(bind(server_sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-)

    {

        perror("bind");

        exit();

    }

    ///listen，成功返回0，出错返回-1

    if(listen(server_sockfd,QUEUE) == -)

    {

        perror("listen");

        exit();

    }

    ///客户端套接字

    char buffer[BUFFER_SIZE];

    struct sockaddr_in client_addr;

    socklen_t length = sizeof(client_addr);

    ///成功返回非负描述字，出错返回-1

    int conn = accept(server_sockfd, (struct sockaddr*)&client_addr, &length);

    if(conn<)

    {

        perror("connect");

        exit();

    }

    while()

    {

        memset(buffer,,sizeof(buffer));

        int len = recv(conn, buffer, sizeof(buffer),);

        if(strcmp(buffer,"exit\n")==)

            break;

        fputs(buffer, stdout);

        send(conn, buffer, len, );

    }

    close(conn);

    close(server_sockfd);

    return ;

}

#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()

{

    ///定义sockfd

    int sock_cli = socket(AF_INET,SOCK_STREAM, );

    ///定义sockaddr_in

    struct sockaddr_in servaddr;

    memset(&servaddr, , sizeof(servaddr));

    servaddr.sin_family = AF_INET;

    servaddr.sin_port = htons(MYPORT);  ///服务器端口

    servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");  ///服务器ip

    ///连接服务器，成功返回0，错误返回-1

    if (connect(sock_cli, (struct sockaddr *)&servaddr, sizeof(servaddr)) < )

    {

        perror("connect");

        exit();

    }

    char sendbuf[BUFFER_SIZE];

    char recvbuf[BUFFER_SIZE];

    while (fgets(sendbuf, sizeof(sendbuf), stdin) != NULL)

    {

        send(sock_cli, sendbuf, strlen(sendbuf),); ///发送

        if(strcmp(sendbuf,"exit\n")==)

            break;

        recv(sock_cli, recvbuf, sizeof(recvbuf),); ///接收

        fputs(recvbuf, stdout);

        memset(sendbuf, , sizeof(sendbuf));

        memset(recvbuf, , sizeof(recvbuf));

    }

    close(sock_cli);

    return ;

}