整体的代码写完了但是运行起来有问题当客户端发送完第一次信息服务器就直接断连了
题目要
1使客户端可以继续发送信息直到在信息中发送 "quit "。同时服务器应显示收到的每条信息。收到 "quit "信息后，客户端和服务器应用程序都应退出。
2服务器向客户端发送字符串 "Received Message（已收到消息）"，确认已收到用户定义的消息。客户端应在自己的屏幕上输出收到的信息，然后准备发送更多信息，直到发送 "quit "信息。发送 "quit "信息后，客户端和服务器应用程序都应退出。
3用名为 "bye "的新命令更新代码。当用户在客户端输入 "bye "时，服务器应作出响应，客户端应终止，让服务器等待新的连接。
这是server的代码
#include <windows.networking.sockets.h>
#include <iostream>
#pragma comment(lib, "Ws2_32.lib")
using namespace std;
int main()
{
//starts Winsock DLLs
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
return 0;
//create server socket
SOCKET ServerSocket;
ServerSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (ServerSocket == INVALID_SOCKET) {
WSACleanup();
return 0;
}
//binds socket to address
sockaddr_in SvrAddr;
SvrAddr.sin_family = AF_INET;
SvrAddr.sin_addr.s_addr = INADDR_ANY;
SvrAddr.sin_port = htons(27000);
if (bind(ServerSocket, (struct sockaddr*)&SvrAddr, sizeof(SvrAddr)) == SOCKET_ERROR)
{
closesocket(ServerSocket);
WSACleanup();
return 0;
}
//listen on a socket
if (listen(ServerSocket, 1) == SOCKET_ERROR) {
closesocket(ServerSocket);
WSACleanup();
return 0;
}
cout << "Waiting for client connection\n" << endl;
loophead:
//accepts a connection from a client
SOCKET ConnectionSocket;
ConnectionSocket = SOCKET_ERROR;
if ((ConnectionSocket = accept(ServerSocket, NULL, NULL)) == SOCKET_ERROR) {
closesocket(ServerSocket);
WSACleanup();
return 0;
}
cout << "Connection Established" << endl;
while(1){
//receives RxBuffer
char RxBuffer[128] = {};
recv(ConnectionSocket, RxBuffer, sizeof(RxBuffer), 0);
if (sizeof(RxBuffer) > 0) {
cout << "Msg Rx: " << RxBuffer << endl;
while (1) {
// if the server got message bye then will disconnect to the client and wait for the new connect
if (RxBuffer == "bye") {
closesocket(ConnectionSocket);
cout << "Server wait for next connect";
goto loophead;
}
// if server got quit, the both side will close
else if (RxBuffer == "quit") {
closesocket(ConnectionSocket);
closesocket(ServerSocket);
cout << "Is close";
break;
}
// if didn't get any quit or bye, the server can keep receive the message from client
else {
cout << "send Received Message" << endl;
send(ConnectionSocket, "Received Message", sizeof("Received Message"), 0);
break;
}
}
}
else {
goto loophead;
}
}
closesocket(ConnectionSocket); //closes incoming socket
closesocket(ServerSocket); //closes server socket
WSACleanup(); //frees Winsock resources
return 1;
}
这是clien 的代码
#include <windows.networking.sockets.h>
#pragma comment(lib, "Ws2_32.lib")
#include <iostream>
using namespace std;
int main()
{
//starts Winsock DLLs
WSADATA wsaData;
if ((WSAStartup(MAKEWORD(2, 2), &wsaData)) != 0) {
return 0;
}
//initializes socket. SOCK_STREAM: TCP
SOCKET ClientSocket;
ClientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (ClientSocket == INVALID_SOCKET) {
WSACleanup();
return 0;
}
//Connect socket to specified server
sockaddr_in SvrAddr;
SvrAddr.sin_family = AF_INET; //Address family type itnernet
SvrAddr.sin_port = htons(27000); //port (host to network conversion)
SvrAddr.sin_addr.s_addr = inet_addr("127.0.0.1"); //IP address
if ((connect(ClientSocket, (struct sockaddr*)&SvrAddr, sizeof(SvrAddr))) == SOCKET_ERROR) {
closesocket(ClientSocket);
WSACleanup();
return 0;
}
char TxBuffer[128] = {};
char RxBuffer[128] = {};
while (1) {
memset(TxBuffer, 0, 128);
memset(RxBuffer, 0, 128);
cout << "Enter a String to transmit" << endl;
cin >> TxBuffer;
send(ClientSocket, TxBuffer, sizeof(TxBuffer), 0);
// if the client send the message quit then will disconnect
if (TxBuffer == "quit") {
closesocket(ClientSocket);
break;
}
// if the client send the message bye then will disconnect
else if (TxBuffer == "bye") {
closesocket(ClientSocket);
break;
}
recv(ClientSocket, RxBuffer, sizeof(RxBuffer), 0);
cout << "clint res: " << RxBuffer << endl;
}
//closes connection and socket
closesocket(ClientSocket);
//frees Winsock DLL resources
WSACleanup();
return 1;
}
ai的回答就算了
