tcp服務端客戶端原始碼及注釋

/cpp** 

//服務端：  

//cpp** 

#include

#include

#include

using namespace std;  

#pragma comment(lib, "ws2_32.lib")  //載入函式庫windows socket

int main()  

wsadata wsadata;  

word sockversion = makeword(2, 2);  

socket slisten = 0;  

sockaddr_in sin  = ;  

sockaddr_in remoteaddr = ;  

char sztext = "tcp server demo";  

int naddrlen = 0;  

naddrlen = sizeof(sockaddr_in);  

//fill sin  

sin.sin_port = htons(4567);  

sin.sin_family = af_inet;  

sin.sin_addr.s_un.s_addr = inaddr_any;  

//init wsa  

if (wsastartup(sockversion, &wsadata) != 0)  

cout << "initlization failed!" << endl;  

exit(0);  

slisten = socket(af_inet, sock_stream, ipproto_tcp);  

if (bind(slisten, (lpsockaddr)&sin, sizeof(sin)) == socket_error)  

cout << "bind failed!" << endl;  

return 0;  

if (listen(slisten, 2) == socket_error)  

cout << "listen failed!" << endl;  

return 0;  

socket sclient = inaddr_any;  

while (true)  

sclient = accept(slisten, (sockaddr*)&remoteaddr, &naddrlen);  

if (sclient == invalid_socket)  

cout << "accept failed!" << endl;  

continue;  

send(sclient, sztext, strlen(sztext), 0);  

closesocket(sclient);   

closesocket(slisten);  

wsacleanup();  

//以上為服務端**，以下為客戶端**，分開編譯

//服務端：

#include

#include

#include

using namespace std;

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

int main()

wsadata wsadata;

word sockversion = makeword(2, 2);

socket sock = 0;

if (wsastartup(sockversion, &wsadata) != 0)

cout << "initlization failed!" << endl;

exit(0);

sock = ::socket(af_inet, sock_stream, ipproto_tcp);

if (sock == invalid_socket)

cout << "failed socket!" << endl;

return 0;

sockaddr_in sin;

sin.sin_family = af_inet;

sin.sin_port = htons(4567);

sin.sin_addr.s_un.s_addr = inet_addr("127.0.0.1");//本機同時執行客戶端與服務端程序，獲取本機內部ip

if (connect(sock, (sockaddr*)&sin, sizeof(sockaddr)) == -1)

cout << "connect failed!" << endl;

return 0;

char buffer[256] = "/0";

int  nrecv = 0;

nrecv = recv(sock, buffer, 256, 0);

if (nrecv > 0)

buffer[nrecv] = '/0';

cout << "reveive data: " << buffer << endl;

closesocket(sock);

wsacleanup();

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