//

//  main.m

//  socket_server

//

//  Created by lujunjie on 2016/11/23.

//  Copyright © 2016年 lujunjie. All rights reserved.

//

#import <Foundation/Foundation.h>

#import <sys/socket.h>

#import <netinet/in.h>

#import <arpa/inet.h>

int main(int argc, const char * argv[]) {

    @autoreleasepool {

        // insert code here...

        NSLog(@"Hello, World!");

        // 第一步：打开套节字描述

        int sockfd = -;

        sockfd =  socket(AF_INET, SOCK_STREAM, );// 协议族、套节字可靠性传输、0

        if(sockfd == -)

        {

            NSLog(@"error:打开套节字描述符失败socket（）");

            return ;

        }

        NSLog(@"打开套节字描述sockfd:%d",sockfd);

        // 第二步：bind 绑定sockfd和当前电脑的ip地址&端口号

        struct sockaddr_in serveraddr;

        serveraddr.sin_family = AF_INET;

        serveraddr.sin_port = htons(); // 5000~655355

        serveraddr.sin_addr.s_addr = inet_addr("192.168.1.103");

        int ret =bind(sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr));

        if (ret < ) {

             NSLog(@"error:bind");

            return ;

        }

        NSLog(@"bind-ret:%d",ret);

        // 第三步：listen监听端口

        int listenRet = listen(sockfd, );// ..,监听多少个；

        if (listenRet < ) {

            NSLog(@"error:listen");

            return ;

        }

        NSLog(@"listen-ret:%d",listenRet);

        // 第四步：accept阻塞等待客户端接入

        struct sockaddr_in clientaddr;

        socklen_t len = ;

        int clientfd = accept(sockfd, (struct sockaddr *)&clientaddr, &len);

        if (clientfd < ) {

            NSLog(@"error:accept");

            return ;

        }

        NSLog(@"accept-clientfd:%d",clientfd);

        NSLog(@"成功建立连接");

        // 建立连接之后通信

        char recvbuf[];

        memset(recvbuf, , sizeof(recvbuf));

//

//        long recvRet = recv(clientfd, recvbuf, sizeof(recvbuf), 0);

//

//        NSLog(@"成功接收了%ld个字节\n",recvRet);

//        NSLog(@"client发送过来的内容是：%s",recvbuf);

//        printf("client发送过来的内容是：%s",recvbuf);

        while () {

            long recvRet = recv(clientfd, recvbuf, sizeof(recvbuf), );

            NSLog(@"成功接收了%ld个字节\n",recvRet);

            NSLog(@"NSLogclient发送过来的内容是：%s",recvbuf);

            memset(recvbuf, , sizeof(recvbuf));

        }

    }

    return ;

}

//

//  main.m

//  socket_client_Command

//

//  Created by lujunjie on 2016/11/23.

//  Copyright © 2016年 lujunjie. All rights reserved.

//

#import <Foundation/Foundation.h>

#import <sys/socket.h>

#import <netinet/in.h>

#import <arpa/inet.h>

int main(int argc, const char * argv[]) {

    @autoreleasepool {

        // insert code here...

        NSLog(@"socket_client_Command");

        // 第一步：打开套节字描述

        int sockfd = -;

        sockfd =  socket(AF_INET, SOCK_STREAM, );// 协议族、套节字可靠性、0

        if(sockfd == -)

        {

            NSLog(@"error:打开套节字描述符失败socket（）");

            return ;

        }

        NSLog(@"打开套节字描述sockfd:%d",sockfd);

        // 第二步：connect 链接服务器

        struct sockaddr_in serveraddr;

        serveraddr.sin_family = AF_INET;

        serveraddr.sin_port = htons(); // 5000~655355

        serveraddr.sin_addr.s_addr = inet_addr("192.168.1.103");

        int ret = connect(sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr));

        if (ret < ) {

            NSLog(@"error:connect");

            return ;

        }

        NSLog(@"connect-ret:%d",ret);

        NSLog(@"成功建立连接");

        char sendbuf[];

//

//        strcpy(sendbuf, "cliend:hello world");

//        long retstr=send(sockfd, sendbuf,strlen(sendbuf),0);

//

//        NSLog(@"发送了%ld个字符\n",retstr);

        while () {

            NSLog(@"请输入要发送的内容\n");

            scanf("%s",sendbuf);

            long retstr=send(sockfd, sendbuf,strlen(sendbuf),);

            NSLog(@"发送了%ld个字符\n",retstr);

        }

    }

    return ;

}