求p2p文件传输源码，毕设就靠你了

P2P网络技术原理与C++开发案例, 36元

穿透各种网关，nb啊。要打洞成功率100%m么？QQ也不一定能保证吧

STUN+TURN+UPNP实现这几个就差不多了

/* P2P 程序客户端
*
* 文件名：P2PClient.c
*
* 日期：2004-5-21
*
* 作者：shootingstars([email protected])
*
*/#pragma comment(lib,"ws2_32.lib")#include "windows.h"
#include "..\proto.h"
#include "..\Exception.h"
#include <iostream>
using namespace std;UserList ClientList;#define COMMANDMAXC 256
#define MAXRETRY    5SOCKET PrimaryUDP;
char UserName[10];
char ServerIP[20];bool RecvedACK;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");
}void BindSock(SOCKET sock)
{
sockaddr_in sin;
sin.sin_addr.S_un.S_addr = INADDR_ANY;
sin.sin_family = AF_INET;
sin.sin_port = 0;

if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) < 0)
throw Exception("bind error");
}void ConnectToServer(SOCKET sock,char *username, char *serverip)
{
sockaddr_in remote;
remote.sin_addr.S_un.S_addr = inet_addr(serverip);
remote.sin_family = AF_INET;
remote.sin_port = htons(SERVER_PORT);

stMessage sendbuf;
sendbuf.iMessageType = LOGIN;
strncpy(sendbuf.message.loginmember.userName, username, 10); sendto(sock, (const char*)&sendbuf, sizeof(sendbuf), 0, (const sockaddr*)&remote,sizeof(remote)); int usercount;
int fromlen = sizeof(remote);
int iread = recvfrom(sock, (char *)&usercount, sizeof(int), 0, (sockaddr *)&remote, &fromlen);
if(iread<=0)
{
throw Exception("Login error\n");
} // 登录到服务端后，接收服务端发来的已经登录的用户的信息
cout<<"Have "<<usercount<<" users logined server:"<<endl;
for(int i = 0;i<usercount;i++)
{
stUserListNode *node = new stUserListNode;
recvfrom(sock, (char*)node, sizeof(stUserListNode), 0, (sockaddr *)&remote, &fromlen);
ClientList.push_back(node);
cout<<"Username:"<<node->userName<<endl;
in_addr tmp;
tmp.S_un.S_addr = htonl(node->ip);
cout<<"UserIP:"<<inet_ntoa(tmp)<<endl;
cout<<"UserPort:"<<node->port<<endl;
cout<<""<<endl;
}
}void OutputUsage()
{
cout<<"You can input you command:\n"
<<"Command Type:\"send\",\"exit\",\"getu\"\n"
<<"Example : send Username Message\n"
<<"          exit\n"
<<"          getu\n"
<<endl;
}/* 这是主要的函数：发送一个消息给某个用户(C)
*流程：直接向某个用户的外网IP发送消息，如果此前没有联系过
*      那么此消息将无法发送，发送端等待超时。
*      超时后，发送端将发送一个请求信息到服务端，
*      要求服务端发送给客户C一个请求，请求C给本机发送打洞消息
*      以上流程将重复MAXRETRY次
*/
bool SendMessageTo(char *UserName, char *Message)
{
char realmessage[256];
unsigned int UserIP;
unsigned short UserPort;
bool FindUser = false;
for(UserList::iterator UserIterator=ClientList.begin();
UserIterator!=ClientList.end();
++UserIterator)
{
if( strcmp( ((*UserIterator)->userName), UserName) == 0 )
{
UserIP = (*UserIterator)->ip;
UserPort = (*UserIterator)->port;
FindUser = true;
}
} if(!FindUser)
return false; strcpy(realmessage, Message);
for(int i=0;i<MAXRETRY;i++)
{
RecvedACK = false; sockaddr_in remote;
remote.sin_addr.S_un.S_addr = htonl(UserIP);
remote.sin_family = AF_INET;
remote.sin_port = htons(UserPort);
stP2PMessage MessageHead;
MessageHead.iMessageType = P2PMESSAGE;
MessageHead.iStringLen = (int)strlen(realmessage)+1;
int isend = sendto(PrimaryUDP, (const char *)&MessageHead, sizeof(MessageHead), 0, (const sockaddr*)&remote, sizeof(remote));
isend = sendto(PrimaryUDP, (const char *)&realmessage, MessageHead.iStringLen, 0, (const sockaddr*)&remote, sizeof(remote));

// 等待接收线程将此标记修改
for(int j=0;j<10;j++)
{
if(RecvedACK)
return true;
else
Sleep(300);
} // 没有接收到目标主机的回应，认为目标主机的端口映射没有
// 打开，那么发送请求信息给服务器，要服务器告诉目标主机
// 打开映射端口（UDP打洞）
sockaddr_in server;
server.sin_addr.S_un.S_addr = inet_addr(ServerIP);
server.sin_family = AF_INET;
server.sin_port = htons(SERVER_PORT);

stMessage transMessage;
transMessage.iMessageType = P2PTRANS;
strcpy(transMessage.message.translatemessage.userName, UserName); sendto(PrimaryUDP, (const char*)&transMessage, sizeof(transMessage), 0, (const sockaddr*)&server, sizeof(server));
Sleep(100);// 等待对方先发送信息。
}
return false;
}// 解析命令，暂时只有exit和send命令
// 新增getu命令，获取当前服务器的所有用户
void ParseCommand(char * CommandLine)
{
if(strlen(CommandLine)<4)
return;
char Command[10];
strncpy(Command, CommandLine, 4);
Command[4]='\0'; if(strcmp(Command,"exit")==0)
{
stMessage sendbuf;
sendbuf.iMessageType = LOGOUT;
strncpy(sendbuf.message.logoutmember.userName, UserName, 10);
sockaddr_in server;
server.sin_addr.S_un.S_addr = inet_addr(ServerIP);
server.sin_family = AF_INET;
server.sin_port = htons(SERVER_PORT); sendto(PrimaryUDP,(const char*)&sendbuf, sizeof(sendbuf), 0, (const sockaddr *)&server, sizeof(server));
shutdown(PrimaryUDP, 2);
closesocket(PrimaryUDP);
exit(0);
}
else if(strcmp(Command,"send")==0)
{
char sendname[20];
char message[COMMANDMAXC];
int i;
for(i=5;;i++)
{
if(CommandLine[i]!=' ')
sendname[i-5]=CommandLine[i];
else
{
sendname[i-5]='\0';
break;
}
}
strcpy(message, &(CommandLine[i+1]));
if(SendMessageTo(sendname, message))
printf("Send OK!\n");
else
printf("Send Failure!\n");
}
else if(strcmp(Command,"getu")==0)
{
int command = GETALLUSER;
sockaddr_in server;
server.sin_addr.S_un.S_addr = inet_addr(ServerIP);
server.sin_family = AF_INET;
server.sin_port = htons(SERVER_PORT); sendto(PrimaryUDP,(const char*)&command, sizeof(command), 0, (const sockaddr *)&server, sizeof(server));
}
}// 接受消息线程
DWORD WINAPI RecvThreadProc(LPVOID lpParameter)
{
sockaddr_in remote;
int sinlen = sizeof(remote);
stP2PMessage recvbuf;
for(;;)
{
int iread = recvfrom(PrimaryUDP, (char *)&recvbuf, sizeof(recvbuf), 0, (sockaddr *)&remote, &sinlen);
if(iread<=0)
{
printf("recv error\n");
continue;
}
switch(recvbuf.iMessageType)
{
case P2PMESSAGE:
{
// 接收到P2P的消息
char *comemessage= new char[recvbuf.iStringLen];
int iread1 = recvfrom(PrimaryUDP, comemessage, 256, 0, (sockaddr *)&remote, &sinlen);
comemessage[iread1-1] = '\0';
if(iread1<=0)
throw Exception("Recv Message Error\n");
else
{
printf("Recv a Message:%s\n",comemessage);

stP2PMessage sendbuf;
sendbuf.iMessageType = P2PMESSAGEACK;
sendto(PrimaryUDP, (const char*)&sendbuf, sizeof(sendbuf), 0, (const sockaddr*)&remote, sizeof(remote));
} delete []comemessage;
break; }
case P2PSOMEONEWANTTOCALLYOU:
{
// 接收到打洞命令，向指定的IP地址打洞
printf("Recv p2someonewanttocallyou data\n");
sockaddr_in remote;
remote.sin_addr.S_un.S_addr = htonl(recvbuf.iStringLen);
remote.sin_family = AF_INET;
remote.sin_port = htons(recvbuf.Port); // UDP hole punching
stP2PMessage message;
message.iMessageType = P2PTRASH;
sendto(PrimaryUDP, (const char *)&message, sizeof(message), 0, (const sockaddr*)&remote, sizeof(remote));

break;
}
case P2PMESSAGEACK:
{
// 发送消息的应答
RecvedACK = true;
break;
}
case P2PTRASH:
{
// 对方发送的打洞消息，忽略掉。
//do nothing ...
printf("Recv p2ptrash data\n");
break;
}
case GETALLUSER:
{
int usercount;
int fromlen = sizeof(remote);
int iread = recvfrom(PrimaryUDP, (char *)&usercount, sizeof(int), 0, (sockaddr *)&remote, &fromlen);
if(iread<=0)
{
throw Exception("Login error\n");
}

ClientList.clear(); cout<<"Have "<<usercount<<" users logined server:"<<endl;
for(int i = 0;i<usercount;i++)
{
stUserListNode *node = new stUserListNode;
recvfrom(PrimaryUDP, (char*)node, sizeof(stUserListNode), 0, (sockaddr *)&remote, &fromlen);
ClientList.push_back(node);
cout<<"Username:"<<node->userName<<endl;
in_addr tmp;
tmp.S_un.S_addr = htonl(node->ip);
cout<<"UserIP:"<<inet_ntoa(tmp)<<endl;
cout<<"UserPort:"<<node->port<<endl;
cout<<""<<endl;
}
break;
}
}
}
}
int main(int argc, char* argv[])
{
try
{
InitWinSock();

PrimaryUDP = mksock(SOCK_DGRAM);
BindSock(PrimaryUDP); cout<<"Please input server ip:";
cin>>ServerIP; cout<<"Please input your name:";
cin>>UserName; ConnectToServer(PrimaryUDP, UserName, ServerIP); HANDLE threadhandle = CreateThread(NULL, 0, RecvThreadProc, NULL, NULL, NULL);
CloseHandle(threadhandle);
OutputUsage(); for(;;)
{
char Command[COMMANDMAXC];
gets(Command);
ParseCommand(Command);
}
}
catch(Exception &e)
{
printf(e.GetMessage());
return 1;
}
return 0;
}

/* P2P 程序服务端
*
* 文件名：P2PServer.c
*
* 日期：2004-5-21
*
* 作者：shootingstars([email protected])
*
*/
#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)); // 开始主循环.
// 主循环负责下面几件事情:
// 一:读取客户端登陆和登出消息,记录客户列表
// 二:转发客户p2p请求
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
{
int messageType = recvbuf.iMessageType;
switch(messageType){
case LOGIN:
{
//  将这个用户的信息记录到用户列表中
printf("has a user login : %s\n", recvbuf.message.loginmember.userName);
stUserListNode *currentuser = new stUserListNode();
strcpy(currentuser->userName, recvbuf.message.loginmember.userName);
currentuser->ip = ntohl(sender.sin_addr.S_un.S_addr);
currentuser->port = ntohs(sender.sin_port);

ClientList.push_back(currentuser); // 发送已经登陆的客户信息
int nodecount = (int)ClientList.size();
sendto(PrimaryUDP, (const char*)&nodecount, sizeof(int), 0, (const sockaddr*)&sender, sizeof(sender));
for(UserList::iterator UserIterator=ClientList.begin();
UserIterator!=ClientList.end();
++UserIterator)
{
sendto(PrimaryUDP, (const char*)(*UserIterator), sizeof(stUserListNode), 0, (const sockaddr*)&sender, sizeof(sender));
} break;
}
case LOGOUT:
{
// 将此客户信息删除
printf("has a user logout : %s\n", recvbuf.message.logoutmember.userName);
UserList::iterator removeiterator = NULL;
for(UserList::iterator UserIterator=ClientList.begin();
UserIterator!=ClientList.end();
++UserIterator)
{
if( strcmp( ((*UserIterator)->userName), recvbuf.message.logoutmember.userName) == 0 )
{
removeiterator = UserIterator;
break;
}
}
if(removeiterator != NULL)
ClientList.remove(*removeiterator);
break;
}
case P2PTRANS:
{
// 某个客户希望服务端向另外一个客户发送一个打洞消息
printf("%s wants to p2p %s\n",inet_ntoa(sender.sin_addr),recvbuf.message.translatemessage.userName);
stUserListNode node = GetUser(recvbuf.message.translatemessage.userName);
sockaddr_in remote;
remote.sin_family=AF_INET;
remote.sin_port= htons(node.port);
remote.sin_addr.s_addr = htonl(node.ip); in_addr tmp;
tmp.S_un.S_addr = htonl(node.ip);
printf("the address is %s,and port is %d\n",inet_ntoa(tmp), node.port); stP2PMessage transMessage;
transMessage.iMessageType = P2PSOMEONEWANTTOCALLYOU;
transMessage.iStringLen = ntohl(sender.sin_addr.S_un.S_addr);
transMessage.Port = ntohs(sender.sin_port);

sendto(PrimaryUDP,(const char*)&transMessage, sizeof(transMessage), 0, (const sockaddr *)&remote, sizeof(remote)); break;
}

case GETALLUSER:
{
int command = GETALLUSER;
sendto(PrimaryUDP, (const char*)&command, sizeof(int), 0, (const sockaddr*)&sender, sizeof(sender)); int nodecount = (int)ClientList.size();
sendto(PrimaryUDP, (const char*)&nodecount, sizeof(int), 0, (const sockaddr*)&sender, sizeof(sender)); for(UserList::iterator UserIterator=ClientList.begin();
UserIterator!=ClientList.end();
++UserIterator)
{
sendto(PrimaryUDP, (const char*)(*UserIterator), sizeof(stUserListNode), 0, (const sockaddr*)&sender, sizeof(sender));
}
break;
}
}
}
} }
catch(Exception &e)
{
printf(e.GetMessage());
return 1;
} return 0;
}/* 异常类
*
* 文件名：Exception.h
*
* 日期：2004.5.5
*
* 作者：shootingstars([email protected])
*/#ifndef __HZH_Exception__
#define __HZH_Exception__#define EXCEPTION_MESSAGE_MAXLEN 256
#include "string.h"class Exception
{
private:
char m_ExceptionMessage[EXCEPTION_MESSAGE_MAXLEN];
public:
Exception(char *msg)
{
strncpy(m_ExceptionMessage, msg, EXCEPTION_MESSAGE_MAXLEN);
} char *GetMessage()
{
return m_ExceptionMessage;
}
};#endif/* P2P 程序传输协议
*
* 文件名：proto.h
*
* 日期：2004-5-21
*
* 作者：shootingstars([email protected])
*
*/#pragma once
#include <list>// 定义iMessageType的值
#define LOGIN 1
#define LOGOUT 2
#define P2PTRANS 3
#define GETALLUSER  4// 服务器端口
#define SERVER_PORT 2280// Client登录时向服务器发送的消息
struct stLoginMessage
{
char userName[10];
char password[10];
};// Client注销时发送的消息
struct stLogoutMessage
{
char userName[10];
};// Client向服务器请求另外一个Client(userName)向自己方向发送UDP打洞消息
struct stP2PTranslate
{
char userName[10];
};// Client向服务器发送的消息格式
struct stMessage
{
int iMessageType;
union _message
{
stLoginMessage loginmember;
stLogoutMessage logoutmember;
stP2PTranslate translatemessage;
}message;
};// 客户节点信息
struct stUserListNode
{
char userName[10];
unsigned int ip;
unsigned short port;
};// Server向Client发送的消息
struct stServerToClient
{
int iMessageType;
union _message
{
stUserListNode user;
}message;};//======================================
// 下面的协议用于客户端之间的通信
//======================================
#define P2PMESSAGE 100               // 发送消息
#define P2PMESSAGEACK 101            // 收到消息的应答
#define P2PSOMEONEWANTTOCALLYOU 102  // 服务器向客户端发送的消息
                                     // 希望此客户端发送一个UDP打洞包
#define P2PTRASH        103          // 客户端发送的打洞包，接收端应该忽略此消息// 客户端之间发送消息格式
struct stP2PMessage
{
int iMessageType;
int iStringLen;         // or IP address
unsigned short Port;
};using namespace std;
typedef list<stUserListNode *> UserList;

要c++写的，可穿透各种网关的
====================================================
你丫的开玩笑呢！？
就20分。
所有NAT类型！？
你们啥学校啊！？要求所有NAT类型太神了，我保证。是你需求没有听好。

QT examples中就有一个bt下载的

我写的一个FAW SDK库
可以基本实现P2P传输
不过是用我的库函数执行
代码不给，哈哈
http://cid-f9bdd17c2d0b67e5.skydrive.live.com/self.aspx/.Public/FawSdkC.zip
里面包括了两个如何使用的示范工程
VS2005或者以上版本直接可以打开

调试易

求p2p文件传输源码，毕设就靠你了

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