Windows 如何在接受请求之前使用WSA连接和WSA接受发送接收初始化数据
作为标题，我在msdn或互联网上搜索了一个示例，但没有找到任何一个>\ubr 在所有情况下，他们都使用WSA连接（S、sa、sa_len、strongNULL、NULL、NULL、NULL/strong）；溴 我想使用这些函数（WSAConnect&wsaaaccept）来创建一个简单的授权，在接受之前输入lpCallerData->bufWindows 如何在接受请求之前使用WSA连接和WSA接受发送接收初始化数据,windows,visual-c++,winsock2,Windows,Visual C++,Winsock2,作为标题，我在msdn或互联网上搜索了一个示例，但没有找到任何一个>\ubr 在所有情况下，他们都使用WSA连接（S、sa、sa_len、strongNULL、NULL、NULL、NULL/strong）；溴 我想使用这些函数（WSAConnect&wsaaaccept）来创建一个简单的授权，在接受之前输入lpCallerData->buf 我已经尝试过服务器端msdn中的WSAAAccept示例和关于WSAConnect的简单代码，但它总是“lpCallerData==NULL” 对不起，我的
我已经尝试过服务器端msdn中的WSAAAccept示例和关于WSAConnect的简单代码，但它总是“lpCallerData==NULL”
对不起，我的英语不好
提前感谢您的帮助 我的非工作代码： 服务器端：
SOCKET SV_Socket;
struct sockaddr_in SV_Channel;
WORD SV_wVersionRequested;
WSADATA SV_wsaData;
int SV_on = 1;
int CALLBACK ConditionAcceptFunc(
LPWSABUF lpCallerId,
LPWSABUF lpCallerData,
LPQOS pQos,
LPQOS lpGQOS,
LPWSABUF lpCalleeId,
LPWSABUF lpCalleeData,
GROUP FAR * g,
DWORD_PTR dwCallbackData
)
{
//printf( "test1\n" );
//if ( memcmp( lpCallerData->buf ,"quyen194" , lpCallerData->len ) == 0 )
if ( lpCallerData->buf[0] == 'q' )
{
//memcpy( lpCalleeData->buf ,"OK" ,2 );
//lpCalleeData->len = 2;
return CF_ACCEPT;
}
else
{
//printf( "Reject request: \n" );
//printf( "Buf: " );
//printf( lpCallerData->buf );
//printf( "\nLen: %d\n" ,lpCallerData->len );
//memcpy( lpCalleeData->buf ,"NOT" ,3 );
return CF_REJECT;
}
}
void AcceptRequest()
{
struct sockaddr_in saClient;
int iClientSize = sizeof(saClient);
//---- ACCEPT connection ------------------
while(true){
int socketNumb = 0;
if(AcceptRequestFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Data Transfer Listen Socket Waiting...\n",socketNumb);
//C_Socket = accept(SV_Socket,NULL,NULL); // block for connection request
C_Socket = WSAAccept(SV_Socket, (SOCKADDR*) &saClient, &iClientSize, &ConditionAcceptFunc, NULL);
if(C_Socket == INVALID_SOCKET)
{
if(AcceptRequestFunctionLogOnScreen)
if(AllErrorLogOnScreen)
printf("%d: Data Transfer Listen Socket accept failed with error: %ld\n",socketNumb,WSAGetLastError());
WSACleanup();
}
else{
if(AcceptRequestFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Request to Data Transfer Listen Socket Accepted...\n",socketNumb);
//Mark that Client Socket is inused
C_Alive = true;
//---- SEND bytes -------------------------------------------
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataSending),NULL,NULL,NULL);
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataReceiving),NULL,NULL,NULL);
while(C_Alive == true){
Sleep(10000);
}
}
}
while(shutdown(SV_Socket,SD_BOTH)){
Sleep(1000);
}
closesocket(SV_Socket);
WSACleanup();
return;
}
int CALLBACK ConditionAcceptFunc(
LPWSABUF lpCallerId,
LPWSABUF lpCallerData,
LPQOS pQos,
LPQOS lpGQOS,
LPWSABUF lpCalleeId,
LPWSABUF lpCalleeData,
GROUP FAR * g,
DWORD_PTR dwCallbackData
)
{
//printf( "test1\n" );
//if ((lpCallerData) && (lpCallerData->len >= 8) && (memcmp(lpCallerData->buf, "quyen194", 8) == 0))
if ((lpCallerData) && (lpCallerData->len > 0) && (lpCallerData->buf[0] == 'q'))
{
//if ((lpCalleeData) && (lpCalleeData->len > 0)) {
// memcpy( lpCalleeData->buf, "OK", 2 );
// lpCalleeData->len = 2;
//}
return CF_ACCEPT;
}
else
{
//printf( "Reject request: \n" );
//if ((lpCallerData) && (lpCallerData->len > 0)) {
// printf( "Buf: %*s", lpCallerData->len, lpCallerData->buf );
// printf( "\nLen: %d\n", lpCallerData->len );
//}
//if ((lpCalleeData) && (lpCalleeData->len > 0)) {
// memcpy( lpCalleeData->buf, "NOT", 3 );
// lpCalleeData->len = 3;
//}
return CF_REJECT;
}
}
void Connect2Server()
{
struct sockaddr_in saClient;
int iClientSize = sizeof(saClient);
LPWSABUF lpCallerData= new(WSABUF);
//WSABUF lpCalleeData;// = new(WSABUF);
lpCallerData->buf[0] = 'q';
lpCallerData->len = 1;
printf( "Source: \n" );
printf( "Buf: " );
printf( lpCallerData->buf );
printf( "\nLen: %d\n" ,lpCallerData->len );
system("pause");
//---- try CONNECT -----------------------------------------
int ReturnValue;
int TryToConnect;
int One_socketNumb = 0;
for(TryToConnect=0;TryToConnect<=10;TryToConnect++)
{
//ReturnValue = connect(C_Socket,(SOCKADDR *)&C_Channel, sizeof(C_Channel));
ReturnValue = WSAConnect( C_Socket ,(SOCKADDR *)&C_Channel ,sizeof(C_Channel) ,lpCallerData ,NULL ,NULL ,NULL );
//printf( "Result: \n" );
//printf( "Buf: " );
//printf( lpCalleeData->buf );
//printf( "Len: %d\n" ,lpCalleeData->len );
if (ReturnValue == SOCKET_ERROR){
if(Connect2ServerFunctionLogOnScreen)
if(AllErrorLogOnScreen){
printf("%d: Connect error %ld",One_socketNumb,WSAGetLastError());
printf("%d: Attempt to connect #%d to ChatP2P Server\n",One_socketNumb,TryToConnect+1);
}
Sleep(1000);
if (TryToConnect == 10)
{
WSACleanup();
return; //Couldn't connect
}
}
else{
break;
}
}
//-----------------------------------------------------------
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Connect ServerSOCKET: OK...\n",One_socketNumb);
//Mark that Server Socket is inused
C_Alive = true;
//---Connection OK
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("\n%d: Connected\n",One_socketNumb);
//---- SEND bytes -------------------------------------------
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataSending),NULL,NULL,NULL);
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataReceiving),NULL,NULL,NULL);
while(C_Alive == true){
Sleep(10000);
}
//---Close Client Socket----------
shutdown(C_Socket,SD_BOTH);
closesocket(C_Socket);
//-------------------------------------
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Disconnected\n",One_socketNumb);
WSACleanup();
return;
}
void Connect2Server()
{
...
WSABUF CallerData;
WSABUF CalleeData;
char CallerBuf = 'q';
CallerData.buf = &CallerBuf;
CallerData.len = 1;
char CalleeBuf[12] = {0};
CalleeData.buf = CalleeBuf;
CalleeData.len = 12;
printf( "Source: \n" );
printf( "Buf: %*s", CallerData.len, CallerData.buf );
printf( "\nLen: %d\n", CallerData.len );
...
ReturnValue = WSAConnect( C_Socket, (SOCKADDR *)&C_Channel, sizeof(C_Channel), &CallerData, &CalleeData, NULL, NULL );
//printf( "Result: \n" );
//printf( "Buf: %*s", CalleeData.len, CalleeData.buf );
//printf( "Len: %d\n", CalleeData.len );
...
}
void Connect2Server（）
{
saClient中的结构sockaddr_；
int iClientSize=sizeof（saClient）；
LPWSABUF lpCallerData=new（WSABUF）；
//WSABUF lpCalleeData；//=new（WSABUF）；
lpCallerData->buf[0]=“q”；
lpCallerData->len=1；
printf（“来源：\n”）；
printf（“Buf:”）；
printf（lpCallerData->buf）；
printf（“\nLen:%d\n”，lpCallerData->len）；
系统（“暂停”）；
//----尝试连接-----------------------------------------
返回值；
int TryToConnect；
int One_socketNumb=0；
对于（TryToConnect=0；TryToConnectbuf）；
//printf（“Len:%d\n”，lpCalleeData->Len）；
if（ReturnValue==SOCKET\u错误）{
if（Connect2ServerFunctionLogOnScreen）
如果（AllErrorLogOnScreen）{
printf（“%d:连接错误%ld”，一个_socketNumb，WSAGetLastError（））；
printf（“%d:尝试将#%d连接到chatpp服务器\n”，一个\u socketNumb，尝试连接+1）；
}
睡眠（1000）；
如果（TryToConnect==10）
{
WSACleanup（）；
return；//无法连接
}
}
否则{
打破
}
}
//-----------------------------------------------------------
if（Connect2ServerFunctionLogOnScreen）
如果（所有成功登录屏幕）
printf（“%d:connectserversocket:OK…\n”，一个\u socketNumb）；
//标记服务器套接字已使用
C_Alive=true；
//---连接正常
if（Connect2ServerFunctionLogOnScreen）
如果（所有成功登录屏幕）
printf（“\n%d:Connected\n”，一个\u socketNumb）；
//----发送字节-------------------------------------------
CreateThread（NULL，NULL，LPTHREAD\u START\u例程（DataSending），NULL，NULL，NULL）；
CreateThread（NULL，NULL，LPTHREAD\u START\u例程（数据接收），NULL，NULL，NULL）；
while（C_Alive==true）{
睡眠（10000）；
}
//---关闭客户端套接字----------
关机（C_插座、SD_两个）；
闭合插座（C_插座）；
//-------------------------------------
if（Connect2ServerFunctionLogOnScreen）
如果（所有成功登录屏幕）
printf（“%d:Disconnected\n”，一个\u socketNumb）；
WSACleanup（）；
返回；
}
lpCallerData
在wsaaaccept（）
回调中始终为空，因为TCP/IP不支持在建立连接期间交换呼叫者/被呼叫者数据。这在WSAConnect（）
文档中有明确说明：
注意Windows中的TCP/IP协议不支持连接数据。仅在ATM（RAWWAN）上通过原始套接字支持连接数据
wsaaaccept（）
文档还说明：
如果没有呼叫者标识或呼叫者数据可用，则相应的参数将为空许多网络协议不支持连接时间呼叫方数据
lpCalleeData->len最初包含由服务提供者分配并由lpCalleeData->buf指向的缓冲区长度值为零表示不支持将用户数据传回调用方
尽管如此，即使支持它，您仍然无法正确管理WSABUF
结构。您的服务器没有检查NULL或len
溢出，并且您的客户端代码没有为WSABUF:：buf
字段分配任何内存
您的代码需要看起来更像这样：
服务器端：
SOCKET SV_Socket;
struct sockaddr_in SV_Channel;
WORD SV_wVersionRequested;
WSADATA SV_wsaData;
int SV_on = 1;
int CALLBACK ConditionAcceptFunc(
LPWSABUF lpCallerId,
LPWSABUF lpCallerData,
LPQOS pQos,
LPQOS lpGQOS,
LPWSABUF lpCalleeId,
LPWSABUF lpCalleeData,
GROUP FAR * g,
DWORD_PTR dwCallbackData
)
{
//printf( "test1\n" );
//if ( memcmp( lpCallerData->buf ,"quyen194" , lpCallerData->len ) == 0 )
if ( lpCallerData->buf[0] == 'q' )
{
//memcpy( lpCalleeData->buf ,"OK" ,2 );
//lpCalleeData->len = 2;
return CF_ACCEPT;
}
else
{
//printf( "Reject request: \n" );
//printf( "Buf: " );
//printf( lpCallerData->buf );
//printf( "\nLen: %d\n" ,lpCallerData->len );
//memcpy( lpCalleeData->buf ,"NOT" ,3 );
return CF_REJECT;
}
}
void AcceptRequest()
{
struct sockaddr_in saClient;
int iClientSize = sizeof(saClient);
//---- ACCEPT connection ------------------
while(true){
int socketNumb = 0;
if(AcceptRequestFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Data Transfer Listen Socket Waiting...\n",socketNumb);
//C_Socket = accept(SV_Socket,NULL,NULL); // block for connection request
C_Socket = WSAAccept(SV_Socket, (SOCKADDR*) &saClient, &iClientSize, &ConditionAcceptFunc, NULL);
if(C_Socket == INVALID_SOCKET)
{
if(AcceptRequestFunctionLogOnScreen)
if(AllErrorLogOnScreen)
printf("%d: Data Transfer Listen Socket accept failed with error: %ld\n",socketNumb,WSAGetLastError());
WSACleanup();
}
else{
if(AcceptRequestFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Request to Data Transfer Listen Socket Accepted...\n",socketNumb);
//Mark that Client Socket is inused
C_Alive = true;
//---- SEND bytes -------------------------------------------
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataSending),NULL,NULL,NULL);
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataReceiving),NULL,NULL,NULL);
while(C_Alive == true){
Sleep(10000);
}
}
}
while(shutdown(SV_Socket,SD_BOTH)){
Sleep(1000);
}
closesocket(SV_Socket);
WSACleanup();
return;
}
int CALLBACK ConditionAcceptFunc(
LPWSABUF lpCallerId,
LPWSABUF lpCallerData,
LPQOS pQos,
LPQOS lpGQOS,
LPWSABUF lpCalleeId,
LPWSABUF lpCalleeData,
GROUP FAR * g,
DWORD_PTR dwCallbackData
)
{
//printf( "test1\n" );
//if ((lpCallerData) && (lpCallerData->len >= 8) && (memcmp(lpCallerData->buf, "quyen194", 8) == 0))
if ((lpCallerData) && (lpCallerData->len > 0) && (lpCallerData->buf[0] == 'q'))
{
//if ((lpCalleeData) && (lpCalleeData->len > 0)) {
// memcpy( lpCalleeData->buf, "OK", 2 );
// lpCalleeData->len = 2;
//}
return CF_ACCEPT;
}
else
{
//printf( "Reject request: \n" );
//if ((lpCallerData) && (lpCallerData->len > 0)) {
// printf( "Buf: %*s", lpCallerData->len, lpCallerData->buf );
// printf( "\nLen: %d\n", lpCallerData->len );
//}
//if ((lpCalleeData) && (lpCalleeData->len > 0)) {
// memcpy( lpCalleeData->buf, "NOT", 3 );
// lpCalleeData->len = 3;
//}
return CF_REJECT;
}
}
客户端：
void Connect2Server()
{
struct sockaddr_in saClient;
int iClientSize = sizeof(saClient);
LPWSABUF lpCallerData= new(WSABUF);
//WSABUF lpCalleeData;// = new(WSABUF);
lpCallerData->buf[0] = 'q';
lpCallerData->len = 1;
printf( "Source: \n" );
printf( "Buf: " );
printf( lpCallerData->buf );
printf( "\nLen: %d\n" ,lpCallerData->len );
system("pause");
//---- try CONNECT -----------------------------------------
int ReturnValue;
int TryToConnect;
int One_socketNumb = 0;
for(TryToConnect=0;TryToConnect<=10;TryToConnect++)
{
//ReturnValue = connect(C_Socket,(SOCKADDR *)&C_Channel, sizeof(C_Channel));
ReturnValue = WSAConnect( C_Socket ,(SOCKADDR *)&C_Channel ,sizeof(C_Channel) ,lpCallerData ,NULL ,NULL ,NULL );
//printf( "Result: \n" );
//printf( "Buf: " );
//printf( lpCalleeData->buf );
//printf( "Len: %d\n" ,lpCalleeData->len );
if (ReturnValue == SOCKET_ERROR){
if(Connect2ServerFunctionLogOnScreen)
if(AllErrorLogOnScreen){
printf("%d: Connect error %ld",One_socketNumb,WSAGetLastError());
printf("%d: Attempt to connect #%d to ChatP2P Server\n",One_socketNumb,TryToConnect+1);
}
Sleep(1000);
if (TryToConnect == 10)
{
WSACleanup();
return; //Couldn't connect
}
}
else{
break;
}
}
//-----------------------------------------------------------
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Connect ServerSOCKET: OK...\n",One_socketNumb);
//Mark that Server Socket is inused
C_Alive = true;
//---Connection OK
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("\n%d: Connected\n",One_socketNumb);
//---- SEND bytes -------------------------------------------
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataSending),NULL,NULL,NULL);
CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(DataReceiving),NULL,NULL,NULL);
while(C_Alive == true){
Sleep(10000);
}
//---Close Client Socket----------
shutdown(C_Socket,SD_BOTH);
closesocket(C_Socket);
//-------------------------------------
if(Connect2ServerFunctionLogOnScreen)
if(AllSuccessLogOnScreen)
printf("%d: Disconnected\n",One_socketNumb);
WSACleanup();
return;
}
void Connect2Server()
{
...
WSABUF CallerData;
WSABUF CalleeData;
char CallerBuf = 'q';
CallerData.buf = &CallerBuf;
CallerData.len = 1;
char CalleeBuf[12] = {0};
CalleeData.buf = CalleeBuf;
CalleeData.len = 12;
printf( "Source: \n" );
printf( "Buf: %*s", CallerData.len, CallerData.buf );
printf( "\nLen: %d\n", CallerData.len );
...
ReturnValue = WSAConnect( C_Socket, (SOCKADDR *)&C_Channel, sizeof(C_Channel), &CallerData, &CalleeData, NULL, NULL );
//printf( "Result: \n" );
//printf( "Buf: %*s", CalleeData.len, CalleeData.buf );
//printf( "Len: %d\n", CalleeData.len );
...
}
非常感谢你！你能再帮我一个忙吗？我不知道如何使用TransmitPackages函数和TransmitFile函数><我找不到任何关于它的示例！你能给我一个简单的例子，如何在客户端和服务器端使用它吗？如果你没有太多的时间，就把它写得尽可能简单：D再次感谢你