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HTTPRequest: Prevent crashes during shutdown by skipping callbacks #88

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HTTPRequest: Prevent crashes during shutdown by skipping callbacks #88

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4 changes: 2 additions & 2 deletions GeneralsMD/Code/GameEngine/Include/GameNetwork/GeneralsOnline/HTTP/HTTPRequest.h
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Original file line number Diff line number Diff line change
Expand Up @@ -44,9 +44,9 @@ class HTTPRequest
}
}

void InvokeCallbackIfComplete();
void InvokeCallbackIfComplete(bool bInvokeCallback = true);

void Threaded_SetComplete(CURLcode result);
void Threaded_SetComplete(CURLcode result, bool bInvokeCallback = true);

// mainly used for downloads
std::vector<uint8_t> GetBuffer() { return m_vecBuffer; }
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6 changes: 4 additions & 2 deletions GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/HTTP/HTTPManager.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,8 @@ void HTTPManager::Shutdown()
HTTPRequest* pRequest = *it;
if (pRequest != nullptr && pRequest->EasyHandleMatches(pCurlHandle))
{
pRequest->Threaded_SetComplete(m->data.result);
// Skip callbacks during shutdown to avoid use-after-free
pRequest->Threaded_SetComplete(m->data.result, false);
delete pRequest;
m_vecRequestsInFlight.erase(it);
break;
Expand Down Expand Up @@ -205,7 +206,8 @@ void HTTPManager::Tick()
{
if (pRequest != nullptr && pRequest->EasyHandleMatches(pCurlHandle))
{
pRequest->Threaded_SetComplete(m->data.result);
// Invoke callbacks during normal operation
pRequest->Threaded_SetComplete(m->data.result, true);
vecItemsToRemove.push_back(pRequest);
}
}
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8 changes: 4 additions & 4 deletions GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/HTTP/HTTPRequest.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -88,9 +88,9 @@ void HTTPRequest::OnResponsePartialWrite(std::uint8_t* pBuffer, size_t numBytes)
InvokeProgressUpdateCallback();
}

void HTTPRequest::InvokeCallbackIfComplete()
void HTTPRequest::InvokeCallbackIfComplete(bool bInvokeCallback)
{
if (m_bIsComplete)
if (m_bIsComplete && bInvokeCallback)
{
if (m_completionCallback != nullptr)
{
Expand All @@ -109,7 +109,7 @@ void HTTPRequest::InvokeCallbackIfComplete()
}
}

void HTTPRequest::Threaded_SetComplete(CURLcode result)
void HTTPRequest::Threaded_SetComplete(CURLcode result, bool bInvokeCallback)
{
// store response code
curl_easy_getinfo(m_pCURL, CURLINFO_RESPONSE_CODE, &m_responseCode);
Expand Down Expand Up @@ -148,7 +148,7 @@ void HTTPRequest::Threaded_SetComplete(CURLcode result)
NetworkLog(ELogVerbosity::LOG_RELEASE, "[%p|%s] Response was %d - %s!", this, strURIRedacted.c_str(), m_responseCode, strResponse.c_str());

// trigger callback
InvokeCallbackIfComplete();
InvokeCallbackIfComplete(bInvokeCallback);
}

void HTTPRequest::PlatformStartRequest()
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