P2PServer.c
/* P2P 程序服務端
*
* 檔案名:P2PServer.c
*
* 日期:2004-5-21
*
* 作者:shootingstars(zhouhuis22@sina.com)
*
*/
#pragma comment(lib, "ws2_32.lib")
#include "windows.h"
#include "..\proto.h"
#include "..\Exception.h"
UserList ClientList;
void InitWinSock()
{
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
printf("Windows sockets 2.2 startup");
throw Exception("");
}
else{
printf("Using %s (Status: %s)\n",
wsaData.szDescription, wsaData.szSystemStatus);
printf("with API versions %d.%d to %d.%d\n\n",
LOBYTE(wsaData.wVersion), HIBYTE(wsaData.wVersion),
LOBYTE(wsaData.wHighVersion), HIBYTE(wsaData.wHighVersion));
}
}
SOCKET mksock(int type)
{
SOCKET sock = socket(AF_INET, type, 0);
if (sock < 0)
{
printf("create socket error");
throw Exception("");
}
return sock;
}
stUserListNode GetUser(char *username)
{
for(UserList::iterator UserIterator=ClientList.begin();
UserIterator!=ClientList.end();
++UserIterator)
{
if( strcmp( ((*UserIterator)->userName), username) == 0 )
return *(*UserIterator);
}
throw Exception("not find this user");
}
int main(int argc, char* argv[])
{
try{
InitWinSock();
SOCKET PrimaryUDP;
PrimaryUDP = mksock(SOCK_DGRAM);
sockaddr_in local;
local.sin_family=AF_INET;
local.sin_port= htons(SERVER_PORT);
local.sin_addr.s_addr = htonl(INADDR_ANY);
int nResult=bind(PrimaryUDP,(sockaddr*)&local,sizeof(sockaddr));
if(nResult==SOCKET_ERROR)
throw Exception("bind error");
sockaddr_in sender;
stMessage recvbuf;
memset(&recvbuf,0,sizeof(stMessage));
// 開始主循環.
// 主循環負責下面幾件事情:
// 一:讀取客戶端登入和登出消息,記錄客戶列表
// 二:轉發客戶p2p請求
for(;
{
int dwSender = sizeof(sender);
int ret = recvfrom(PrimaryUDP, (char *)&recvbuf, sizeof(stMessage), 0, (sockaddr *)&sender, &dwSender);
if(ret <= 0)
{
printf("recv error");
continue;
}
else
{