Socket程式設計 簡易測試socket TCP程式

簡易的利用socket 實現tcp連線的程式,旨在簡化程式結構,給初學者乙個啟示的作用.

伺服器端程式:

//#include "stdafx.h"

#include #include #include using namespace std;

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

int _tmain(int argc, _tchar* argv)

cout << "initialize ws2_32.lib...done..." << endl;

//建立socket

socket srv_socket = socket(af_inet,sock_stream,0);

if (srv_socket == socket_error)

cout << "create socket...done..." << endl;

//填充sockaddr_in結構體用於bind

sockaddr_in srv_addr;

srv_addr.sin_addr.s_un.s_addr = htonl(inaddr_any);

srv_addr.sin_family = af_inet;

srv_addr.sin_port = htons(6500);

if (bind(srv_socket,(sockaddr*)&srv_addr,sizeof(srv_addr)) == socket_error)

cout << "bind...done..." << endl;

//使本地socket處於監聽狀態

int backlog = 3;

if (listen(srv_socket,backlog) == socket_error)

cout << "listen...done..." << endl;

//開啟接受狀態accept

//儲存傳送方的位址和埠資訊

socket from_socket;

sockaddr_in from_addr;

int fromlen = sizeof(sockaddr);

if ((from_socket = accept(srv_socket,(sockaddr*)&from_addr,&fromlen)) == socket_error)

cout << "accept...done..." << endl;

//接受傳送方的資料

char recvbuf[256];

if (recv(from_socket,recvbuf,256,0) == socket_error)

else

cout << recvbuf << endl;

cout << "recv...done..." << endl;

closesocket(srv_socket);

closesocket(from_socket);

wsacleanup();

return 0;}

客戶端程式:

//#include "stdafx.h"

#include #include #include using namespace std;

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

#define demon "demon"

#define wtype mb_ok | mb_iconerror

int _tmain(int argc, _tchar* argv)

cout << "initialize ws2_32.lib...done..." << endl;

//建立本地套接字

socket local_socket;

if ((local_socket = socket(af_inet,sock_stream,0)) == socket_error)

cout << "create socket...done..." << endl;

//填充sockaddr_in,用於connect

sockaddr_in cnt_addr;

cnt_addr.sin_addr.s_un.s_addr = inet_addr("127.0.0.1");

cnt_addr.sin_family = af_inet;

cnt_addr.sin_port = htons(6500);

if (connect(local_socket,(sockaddr*)&cnt_addr,sizeof(sockaddr)) == socket_error)

cout << "connect...done..." << endl;

//傳送資料

char buf[256] = "hello...";

if (send(local_socket,buf,strlen(buf)+1,0) == socket_error)

cout << "send...done..." << endl;

closesocket(local_socket);

wsacleanup();

return 0;

}

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