TCP服務端傳送資料（C ）

2021-10-05 18:16:32 字數 1468 閱讀 2682

本文記錄c++實現tcp協議的服務端部分，注意文中的阻塞態會長期存在，知道客戶端響應為止。

#include


"pch.h"


#include


#include


#pragma comment(lib,"ws2_32.lib")  


using


namespace std;


intmain


(int argc,


char


* ar**)


//建立套接字  


socket slisten =


socket


(af_inet, sock_stream, ipproto_tcp);if


(slisten == invalid_socket)


//繫結主機ip和埠資訊  


sockaddr_in sin;


sin.sin_family = af_inet;


sin.sin_port =


htons


(8888);


sin.sin_addr.s_un.s_addr = inaddr_any;if(


bind


(slisten,


(lpsockaddr)


&sin,


sizeof


(sin)


)== socket_error)if(


listen


(slisten,5)


== socket_error)


//迴圈接收資料  


socket sclient;


sockaddr_in remoteaddr;


int naddrlen =


sizeof


(remoteaddr)


;char revdata[


255]


;while


(true) 


cout <<


"接入連線："


<<


inet_ntoa


(remoteaddr.sin_addr)


<< endl;


//接收資料  


int ret =


recv


(sclient, revdata,


255,0)


;if(ret >0)


//傳送資料  


const


char


* senddata =


"hello tcp！\n"


;send


(sclient, senddata,


strlen


(senddata),0


);closesocket


(sclient);}


closesocket


(slisten)


;wsacleanup()


;return0;


}

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