Fix streaming HTTP response header and data callbacks

Extension/swhttp.h

@@ -21,6 +21,10 @@
 #include "steam_gameserver.h"
 #include "smsdk_ext.h"
 
+#include <unordered_map>
+
+class SteamWorksHTTPRequest;
+
 class SteamWorksHTTP :
 	public IHandleTypeDispatch
 {
@@ -31,12 +35,27 @@ class SteamWorksHTTP :
 	public:
 		void OnHandleDestroy(HandleType_t type, void *object);
 		bool GetHandleApproxSize(HandleType_t type, void *object, unsigned int *pSize);
-		
+
 	public:
 		HandleType_t GetHTTPHandle(void);
 
+		/* Streaming responses report progress through HTTPRequestHeadersReceived_t /
+		   HTTPRequestDataReceived_t. Steam delivers those as broadcast gameserver
+		   callbacks (not as call results of the streaming API call), so a single
+		   dispatcher here receives them and routes each one to the owning request by
+		   its handle. Requests add/remove themselves as they are created/destroyed. */
+		void RegisterRequest(SteamWorksHTTPRequest *pRequest);
+		void UnregisterRequest(SteamWorksHTTPRequest *pRequest);
+
+	private:
+		SteamWorksHTTPRequest *FindRequest(HTTPRequestHandle request);
+
+		STEAM_GAMESERVER_CALLBACK(SteamWorksHTTP, OnHTTPHeadersReceived, HTTPRequestHeadersReceived_t, m_CallbackHeadersReceived);
+		STEAM_GAMESERVER_CALLBACK(SteamWorksHTTP, OnHTTPDataReceived, HTTPRequestDataReceived_t, m_CallbackDataReceived);
+
 	private:
 		HandleType_t typeHTTP;
+		std::unordered_map<HTTPRequestHandle, SteamWorksHTTPRequest *> m_Requests;
 };
 
 #include "swhttprequest.h"