我正在考虑如何解决我的聊天服务器和客户端遇到的问题。
应该做什么，客户端询问用户名，然后向用户提出连接请求，并回答 [Y/N]。
当点击是时，客户端必须连接到服务器，当它需要进入一个单独的线程时（用于处理多个客户端（但我的问题是，当多个用户加入时（当前登录用户的用户名已更改）到最后一个加入聊天的人。当这种情况发生时（服务器显示用户名，而在客户端屏幕上它消失了，没有或所有奇怪的迹象出现）。
我还需要帮助是将消息分发给连接的其他客户端（不包括用户本人）
代码服务器：
#include "stdafx.h"
long antwoord;
char chatname[100];
char bericht[498];
char sbericht[498];
using namespace std;
DWORD WINAPI SocketHandler(void*);
//our main function
void main()
{
//here we set the Winsock-DLL to start
WSAData wsaData;
WORD DLLVERSION;
DLLVERSION = MAKEWORD(2,1);
//here the Winsock-DLL will be started with WSAStartup
//version of the DLL
antwoord = WSAStartup(DLLVERSION, &wsaData);
if(antwoord != 0)
{
WSACleanup();
exit(1);
}
else
{
cout << "WSA started successfully" <<endl;
cout << "The status: \n" << wsaData.szSystemStatus <<endl;
}
//the DLL is started
//structure of our socket is being created
SOCKADDR_IN addr;
//addr is our struct
int addrlen = sizeof(addr);
//socket sListen - will listen to incoming connections
SOCKET sListen;
//socket sConnect - will be operating if a connection is found.
SOCKET sConnect;
//setup of our sockets
//opgezocht op internet - AF_INET bekend dat het lid is van de internet familie
//Sock_STREAM betekenend dat onze socket een verbinding georiënteerde socket is.
sConnect = socket(AF_INET,SOCK_STREAM,NULL);
//now we have setup our struct
//inet_addr is our IP adres of our socket(it will be the localhost ip
//that will be 127.0.0.1
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
//retype of the family
addr.sin_family = AF_INET;
//now the server has the ip(127.0.0.1)
//and the port number (4444)
addr.sin_port = htons(4444);
//here we will define the setup for the sListen-socket
sListen = socket(AF_INET,SOCK_STREAM,NULL);
if (sConnect == INVALID_SOCKET)
{
cout << "Error at socket(): \n" << WSAGetLastError() <<endl;
WSACleanup();
}
else
{
cout << "Connect socket() is OK!" <<endl;
}
if(sListen == INVALID_SOCKET)
{
cout << "Error at socket(): \n" << WSAGetLastError() <<endl;
WSACleanup();
}
else
{
cout << "Listen socket() is OK!" <<endl;
}
//here the sListen-socket will be bind
//we say that the socket has the IP adress of (127.0.0.1) and is on port (4444)
//we let the socket become the struct "addr"
if(bind(sListen, (SOCKADDR*)&addr, sizeof(addr)) == SOCKET_ERROR)
{
cout << "bind() failed: \n" << WSAGetLastError() <<endl;
WSACleanup();
exit(1);
}
else{
cout << "bind() is OK!" <<endl;
}
if(listen( sListen, 10) == -1 ){
cout << "Error listening %d\n" << WSAGetLastError() <<endl;
}
//here we will tell what the server must do when a connection is found
//therefor we will create an endless loop
cout << "Waiting for a incoming connection..." <<endl;
//now we let the socket listen for incoming connections
//SOMAXCOMM heeft het nut dat het dan voordurend luisterd naar inkomende verbindingen zonder limiet
int* csock;
while(true)
{
csock = (int*)malloc(sizeof(int));
//if a connection is found: show the message!
if((*csock = accept(sListen, (SOCKADDR*)&addr, &addrlen))!= INVALID_SOCKET)
{
cout << "A Connection was found with :" << inet_ntoa(addr.sin_addr) <<endl;
antwoord = send(*csock, "Welcome to our chat:", 21,NULL);
CreateThread(0,0,&SocketHandler, (void*)csock , 0,0);
cout << *csock <<endl;
}
}
}
//sbericht is the message
DWORD WINAPI SocketHandler(void* lp)
{
int *csock = (int*)lp;
for(;;)
{
antwoord = recv(*csock, sbericht, sizeof(sbericht), NULL);
antwoord = recv(*csock, chatname, sizeof(chatname), NULL);
while(antwoord = recv(*csock, sbericht, sizeof(sbericht), NULL) && (antwoord = recv(*csock, sbericht, sizeof(sbericht), NULL)) )
{
printf("%s\: \"%s\"\n", chatname, sbericht);
antwoord = send(*csock, sbericht, sizeof(sbericht), NULL);
antwoord = send(*csock, chatname, sizeof(chatname), NULL);
}
return 0;
}
}
客户端代码：
#include "stdafx.h"
using namespace std;
//our main function
int main()
{
//here we set the Winsock-DLL to start
string bevestiging;
char chatname[100];
char bericht[250];
char sbericht[250];
string strbericht;
string strsbericht;
long antwoord;
//here the Winsock-DLL will be started with WSAStartup
//version of the DLL
WSAData wsaData;
WORD DLLVERSION;
DLLVERSION = MAKEWORD(2,1);
antwoord = WSAStartup(DLLVERSION, &wsaData);
if(antwoord != 0)
{
exit(1);
}
else
{
cout << "WSA started successfully" <<endl;
cout << "The status: \n" << wsaData.szSystemStatus <<endl;
}
SOCKADDR_IN addr;
int addrlen = sizeof(addr);
SOCKET sConnect;
sConnect = socket(AF_INET, SOCK_STREAM, NULL);
if (sConnect == INVALID_SOCKET)
{
cout << "Error at socket(): \n" << WSAGetLastError() <<endl;
}
else
{
cout << "socket() is OK!\n" <<endl;
}
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_family = AF_INET;
addr.sin_port = htons(4444);
cout << "What is your chat name?" <<endl;
cin.getline(chatname, 100);
cout << "Do you want to connect to the server? [Y/N]" <<endl;
cin >> bevestiging;
if (bevestiging == "N")
{
exit(1);
}
else
{
if(bevestiging == "Y")
{
connect(sConnect, (SOCKADDR*)&addr, sizeof(addr));
antwoord = recv(sConnect, bericht, sizeof(bericht), NULL);
strbericht = bericht;
cout << strbericht << chatname <<endl;
while(true)
{
if(antwoord > 1)
{
cin.clear();
cin.sync();
cout << chatname << " :" <<endl;
cin.getline(sbericht, sizeof(sbericht));
antwoord = send(sConnect, sbericht, sizeof(sbericht), NULL);
antwoord = send(sConnect, chatname, sizeof(chatname), NULL);
while(antwoord = send(sConnect, sbericht, sizeof(sbericht), NULL) && (antwoord = send(sConnect, sbericht, sizeof(sbericht), NULL)))
{
antwoord = recv(sConnect, sbericht, sizeof(sbericht), NULL);
antwoord = recv(sConnect, chatname, sizeof(chatname), NULL);
cout << chatname << ":" <<endl;
cout << sbericht <<endl;
cin.getline(sbericht, 250);
}
}
else
{
cout << "The connection to the server has been lost... \n" << "please exit the client." <<endl;
}
}
抱歉，如果我写得不好（我只是在学习编程套接字），但我无法弄清楚这一点。所以不要对我太苛刻，我仍然需要学习但找不到我需要的东西。所以我想如果有人能告诉我怎么做，我可以看到它是如何完成的以及为什么。
总能学到一些东西（我目前也在忙于beejee的网络编程教程）。