REQUEST_NOTIFICATION_STATUS CNodeHttpModule::OnSendResponse(IN IHttpContext* pHttpContext, IN ISendResponseProvider* pProvider)
{
if (NULL != pHttpContext && NULL != pProvider)
{
CNodeHttpStoredContext* ctx = (CNodeHttpStoredContext*)pHttpContext->GetModuleContextContainer()->GetModuleContext(this->applicationManager->GetModuleId());
DWORD flags = pProvider->GetFlags();
if (NULL != ctx && ctx->GetIsUpgrade() && !ctx->GetOpaqueFlagSet())
{
// Set opaque mode in HTTP.SYS to enable exchanging raw bytes.
pProvider->SetFlags(flags | HTTP_SEND_RESPONSE_FLAG_OPAQUE);
ctx->SetOpaqueFlag();
}
}
return RQ_NOTIFICATION_CONTINUE;
}
REQUEST_NOTIFICATION_STATUS CNodeHttpModule::OnAsyncCompletion(
IHttpContext* pHttpContext, DWORD dwNotification, BOOL fPostNotification, IHttpEventProvider* pProvider, IHttpCompletionInfo* pCompletionInfo)
{
if (NULL != pCompletionInfo && NULL != pHttpContext)
{
CNodeHttpStoredContext* ctx = (CNodeHttpStoredContext*)pHttpContext->GetModuleContextContainer()->GetModuleContext(this->applicationManager->GetModuleId());
ctx->IncreasePendingAsyncOperationCount();
WCHAR message[256];
wsprintfW(message, L"iisnode enters CNodeHttpModule::OnAsyncCompletion callback with request notification status of %d", ctx->GetRequestNotificationStatus());
this->applicationManager->GetEventProvider()->Log(message, WINEVENT_LEVEL_VERBOSE, ctx->GetActivityId());
ASYNC_CONTEXT* async = ctx->GetAsyncContext();
if (NULL != async->completionProcessor)
{
async->completionProcessor(pCompletionInfo->GetCompletionStatus(), pCompletionInfo->GetCompletionBytes(), ctx->GetOverlapped());
}
wsprintfW(message, L"iisnode leaves CNodeHttpModule::OnAsyncCompletion callback with request notification status of %d", ctx->GetRequestNotificationStatus());
this->applicationManager->GetEventProvider()->Log(message, WINEVENT_LEVEL_VERBOSE, ctx->GetActivityId());
if (0 == ctx->DecreasePendingAsyncOperationCount()) // decreases ref count increased on entering OnAsyncCompletion
{
return ctx->GetRequestNotificationStatus();
}
else
{
return RQ_NOTIFICATION_PENDING;
}
}
return RQ_NOTIFICATION_CONTINUE;
}
REQUEST_NOTIFICATION_STATUS CNodeHttpModule::OnExecuteRequestHandler(
IN IHttpContext* pHttpContext,
IN IHttpEventProvider* pProvider)
{
HRESULT hr;
CNodeHttpStoredContext* ctx = NULL;
CheckError(this->applicationManager->Initialize(pHttpContext));
this->applicationManager->GetEventProvider()->Log(L"iisnode received a new http request", WINEVENT_LEVEL_INFO);
CheckError(this->applicationManager->Dispatch(pHttpContext, pProvider, &ctx));
this->applicationManager->GetEventProvider()->Log(L"iisnode dispatched new http request", WINEVENT_LEVEL_INFO, ctx->GetActivityId());
ASYNC_CONTEXT* async = ctx->GetAsyncContext();
async->RunSynchronousContinuations();
REQUEST_NOTIFICATION_STATUS result;
if (0 == ctx->DecreasePendingAsyncOperationCount()) // decreases ref count set to 1 in the ctor of CNodeHttpStoredContext
{
result = ctx->GetRequestNotificationStatus();
}
else
{
result = RQ_NOTIFICATION_PENDING;
}
switch (result)
{
default:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnExecuteRequestHandler",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_CONTINUE:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnExecuteRequestHandler with RQ_NOTIFICATION_CONTINUE",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_FINISH_REQUEST:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnExecuteRequestHandler with RQ_NOTIFICATION_FINISH_REQUEST",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_PENDING:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnExecuteRequestHandler with RQ_NOTIFICATION_PENDING",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
};
return result;
Error:
CNodeEventProvider* log = this->applicationManager->GetEventProvider();
if (log)
{
if (ctx)
{
log->Log(L"iisnode failed to process a new http request", WINEVENT_LEVEL_INFO, ctx->GetActivityId());
}
else
{
log->Log(L"iisnode failed to process a new http request", WINEVENT_LEVEL_INFO);
}
}
if (ERROR_NOT_ENOUGH_QUOTA == hr)
{
CProtocolBridge::SendEmptyResponse(pHttpContext, 503, CNodeConstants::IISNODE_ERROR_NOT_ENOUGH_QUOTA, _T("Service Unavailable"), hr);
}
else if (ERROR_FILE_NOT_FOUND == hr)
{
CProtocolBridge::SendEmptyResponse(pHttpContext, 404, 0, _T("Not Found"), hr);
}
else if (ERROR_NOT_SUPPORTED == hr)
{
if (log)
{
log->Log(L"iisnode rejected websocket connection request", WINEVENT_LEVEL_INFO);
}
CProtocolBridge::SendEmptyResponse(pHttpContext, 501, 0, _T("Not Implemented"), hr);
}
else if (!CProtocolBridge::SendIisnodeError(pHttpContext, hr))
{
CProtocolBridge::SendEmptyResponse( pHttpContext,
500,
CNodeConstants::IISNODE_ERROR_ON_EXECUTE_REQ_HANDLER,
_T("Internal Server Error"),
hr );
}
return RQ_NOTIFICATION_FINISH_REQUEST;
}
REQUEST_NOTIFICATION_STATUS CNodeHttpModule::OnAsyncCompletion(
IHttpContext* pHttpContext, DWORD dwNotification, BOOL fPostNotification, IHttpEventProvider* pProvider, IHttpCompletionInfo* pCompletionInfo)
{
if (NULL != pCompletionInfo && NULL != pHttpContext)
{
CNodeHttpStoredContext* ctx = (CNodeHttpStoredContext*)pHttpContext->GetModuleContextContainer()->GetModuleContext(this->applicationManager->GetModuleId());
if (ctx->GetIsUpgrade())
{
IHttpCompletionInfo2* pCompletionInfo2 = (IHttpCompletionInfo2*)pCompletionInfo;
if (1 == pCompletionInfo2->GetCompletedOperation())
{
// This is completion of the read request for incoming bytes of an opaque byte stream after 101 Switching protocol response was sent
ctx = ctx->GetUpgradeContext();
}
}
ctx->IncreasePendingAsyncOperationCount();
this->applicationManager->GetEventProvider()->Log(
L"iisnode enters CNodeHttpModule::OnAsyncCompletion callback",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
ASYNC_CONTEXT* async = ctx->GetAsyncContext();
if (NULL != async->completionProcessor)
{
DWORD bytesCompleted = pCompletionInfo->GetCompletionBytes();
if (async->completionProcessor == CProtocolBridge::SendResponseBodyCompleted)
{
bytesCompleted = async->bytesCompleteted;
async->bytesCompleteted = 0;
}
async->completionProcessor(pCompletionInfo->GetCompletionStatus(), bytesCompleted, ctx->GetOverlapped());
async->RunSynchronousContinuations();
}
long value = ctx->DecreasePendingAsyncOperationCount();
REQUEST_NOTIFICATION_STATUS result = ctx->GetRequestNotificationStatus();
if(ctx->GetIsUpgrade() && value == 0)
{
//
// when the pending async count reaches 0,
// need to return RQ_NOTIFICATION_CONTINUE
// to indicate websocket connection close.
//
result = RQ_NOTIFICATION_CONTINUE;
}
switch (result)
{
default:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnAsyncCompletion",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_CONTINUE:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnAsyncCompletion with RQ_NOTIFICATION_CONTINUE",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_FINISH_REQUEST:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnAsyncCompletion with RQ_NOTIFICATION_FINISH_REQUEST",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
case RQ_NOTIFICATION_PENDING:
this->applicationManager->GetEventProvider()->Log(
L"iisnode leaves CNodeHttpModule::OnAsyncCompletion with RQ_NOTIFICATION_PENDING",
WINEVENT_LEVEL_VERBOSE,
ctx->GetActivityId());
break;
};
return result;
}
return RQ_NOTIFICATION_CONTINUE;
}
REQUEST_NOTIFICATION_STATUS CNodeHttpModule::OnExecuteRequestHandler(
IN IHttpContext* pHttpContext,
IN IHttpEventProvider* pProvider)
{
HRESULT hr;
CNodeHttpStoredContext* ctx = NULL;
CheckError(this->applicationManager->Initialize(pHttpContext));
this->applicationManager->GetEventProvider()->Log(L"iisnode received a new http request", WINEVENT_LEVEL_INFO);
// reject websocket connections since iisnode does not support them
// http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17#page-17
PCSTR upgrade = pHttpContext->GetRequest()->GetHeader(HttpHeaderUpgrade, NULL);
ErrorIf(upgrade && 0 == strcmp("websocket", upgrade), ERROR_NOT_SUPPORTED);
CheckError(this->applicationManager->Dispatch(pHttpContext, pProvider, &ctx));
if (0 == ctx->DecreasePendingAsyncOperationCount()) // decreases ref count set to 1 in the ctor of CNodeHttpStoredContext
{
return ctx->GetRequestNotificationStatus();
}
else
{
return RQ_NOTIFICATION_PENDING;
}
Error:
CNodeEventProvider* log = this->applicationManager->GetEventProvider();
if (log)
{
log->Log(L"iisnode failed to process a new http request", WINEVENT_LEVEL_INFO);
}
if (ERROR_NOT_ENOUGH_QUOTA == hr)
{
CProtocolBridge::SendEmptyResponse(pHttpContext, 503, _T("Service Unavailable"), hr);
}
else if (ERROR_FILE_NOT_FOUND == hr)
{
CProtocolBridge::SendEmptyResponse(pHttpContext, 404, _T("Not Found"), hr);
}
else if (ERROR_NOT_SUPPORTED == hr)
{
if (log)
{
log->Log(L"iisnode rejected websocket connection request", WINEVENT_LEVEL_INFO);
}
CProtocolBridge::SendEmptyResponse(pHttpContext, 501, _T("Not Implemented"), hr);
}
else if (IISNODE_ERROR_UNRECOGNIZED_DEBUG_COMMAND == hr)
{
CProtocolBridge::SendSyncResponse(
pHttpContext,
200,
"OK",
hr,
TRUE,
"Unrecognized debugging command. Supported commands are ?debug (default), ?brk, and ?kill.");
}
else if (IISNODE_ERROR_UNABLE_TO_FIND_DEBUGGING_PORT == hr)
{
CProtocolBridge::SendSyncResponse(
pHttpContext,
200,
"OK",
hr,
TRUE,
"The debugger was unable to acquire a TCP port to establish communication with the debugee. "
"This may be due to lack of free TCP ports in the range specified in the system.webServer/iisnode/@debuggerPortRange configuration "
"section, or due to lack of permissions to create TCP listeners by the identity of the IIS worker process.");
}
else if (IISNODE_ERROR_UNABLE_TO_CONNECT_TO_DEBUGEE == hr)
{
CProtocolBridge::SendSyncResponse(
pHttpContext,
200,
"OK",
hr,
TRUE,
"The debugger was unable to connect to the the debugee. "
"This may be due to the debugee process terminating during startup (e.g. due to an unhandled exception) or "
"failing to establish a TCP listener on the debugging port. ");
}
else
{
CProtocolBridge::SendEmptyResponse(pHttpContext, 500, _T("Internal Server Error"), hr);
}
return RQ_NOTIFICATION_FINISH_REQUEST;
}
