Large changes to the LLCurl::Responder API, as well as pulling in some changes to common libraries from the server codebase:

* Additional error checking in http handlers.
* Uniform log spam for http errors.
* Switch to using constants for http heads and status codes.
* Fixed bugs in incorrectly checking if parsing LLSD xml resulted in an error.
* Reduced spam regarding LLSD parsing errors in the default completedRaw http handler.  It should not longer be necessary to short-circuit completedRaw to avoid spam.
* Ported over a few bug fixes from the server code.
* Switch mode http status codes to use S32 instead of U32.
* Ported LLSD::asStringRef from server code; avoids copying strings all over the place.
* Ported server change to LLSD::asBinary; this always returns a reference now instead of copying the entire binary blob.
* Ported server pretty notation format (and pretty binary format) to llsd serialization.

* The new LLCurl::Responder API no longer has two error handlers to choose from.  Overriding the following methods have been deprecated:
** error - use httpFailure
** errorWithContent - use httpFailure
** result - use httpSuccess
** completed - use httpCompleted
** completedHeader - no longer necessary; call getResponseHeaders() from a completion method to obtain these headers.

* In order to 'catch' a completed http request, override one of these methods:
** httpSuccess - Called for any 2xx status code.
** httpFailure - Called for any non-2xx status code.
** httpComplete - Called for all status codes.  Default implementation is to call either httpSuccess or httpFailure.
* It is recommended to keep these methods protected/private in order to avoid triggering of these methods without using a 'push' method (see below).

* Uniform error handling should followed whenever possible by calling a variant of this during httpFailure:
** llwarns << dumpResponse() << llendl;
* Be sure to include LOG_CLASS(your_class_name) in your class in order for the log entry to give more context.

* In order to 'push' a result into the responder, you should no longer call error, errorWithContent, result, or completed.
* Nor should you directly call httpSuccess/Failure/Completed (unless passing a message up to a parent class).
* Instead, you can set the internal content of a responder and trigger a corresponding method using the following methods:
** successResult - Sets results and calls httpSuccess
** failureResult - Sets results and calls httpFailure
** completedResult - Sets results and calls httpCompleted

* To obtain information about a the response from a reponder method, use the following getters:
** getStatus - HTTP status code
** getReason - Reason string
** getContent - Content (Parsed body LLSD)
** getResponseHeaders - Response Headers (LLSD map)
** getHTTPMethod - HTTP method of the request
** getURL - URL of the request

* It is still possible to override completeRaw if you want to manipulate data directly out of LLPumpIO.

* See indra/llmessage/llcurl.h for more information.

1 files changed, 26 insertions, 17 deletions

diff --git a/indra/newview/llinventorymodelbackgroundfetch.cpp b/indra/newview/llinventorymodelbackgroundfetch.cpp
index f2b39e7186..e1537033f9 100644
--- a/indra/newview/llinventorymodelbackgroundfetch.cpp
+++ b/indra/newview/llinventorymodelbackgroundfetch.cpp
@@ -363,35 +363,39 @@ void LLInventoryModelBackgroundFetch::incrFetchCount(S16 fetching)
 
 class LLInventoryModelFetchItemResponder : public LLInventoryModel::fetchInventoryResponder
 {
+	LOG_CLASS(LLInventoryModelFetchItemResponder);
 public:
 	LLInventoryModelFetchItemResponder(const LLSD& request_sd) : LLInventoryModel::fetchInventoryResponder(request_sd) {};
-	void result(const LLSD& content);			
-	void errorWithContent(U32 status, const std::string& reason, const LLSD& content);
+private:
+	/* virtual */ void httpSuccess();
+	/* virtual */ void httpFailure();
 };
 
-void LLInventoryModelFetchItemResponder::result( const LLSD& content )
+void LLInventoryModelFetchItemResponder::httpSuccess()
 {
-	LLInventoryModel::fetchInventoryResponder::result(content);
+	LLInventoryModel::fetchInventoryResponder::httpSuccess();
 	LLInventoryModelBackgroundFetch::instance().incrFetchCount(-1);
 }
 
-void LLInventoryModelFetchItemResponder::errorWithContent( U32 status, const std::string& reason, const LLSD& content )
+void LLInventoryModelFetchItemResponder::httpFailure()
 {
-	LLInventoryModel::fetchInventoryResponder::errorWithContent(status, reason, content);
+	LLInventoryModel::fetchInventoryResponder::httpFailure();
 	LLInventoryModelBackgroundFetch::instance().incrFetchCount(-1);
 }
 
 
 class LLInventoryModelFetchDescendentsResponder: public LLHTTPClient::Responder
 {
+	LOG_CLASS(LLInventoryModelFetchDescendentsResponder);
 public:
 	LLInventoryModelFetchDescendentsResponder(const LLSD& request_sd, uuid_vec_t recursive_cats) : 
 		mRequestSD(request_sd),
 		mRecursiveCatUUIDs(recursive_cats)
 	{};
 	//LLInventoryModelFetchDescendentsResponder() {};
-	void result(const LLSD& content);
-	void errorWithContent(U32 status, const std::string& reason, const LLSD& content);
+private:
+	/* virtual */ void httpSuccess();
+	/* virtual */ void httpFailure();
 protected:
 	BOOL getIsRecursive(const LLUUID& cat_id) const;
 private:
@@ -400,8 +404,14 @@ private:
 };
 
 // If we get back a normal response, handle it here.
-void LLInventoryModelFetchDescendentsResponder::result(const LLSD& content)
+void LLInventoryModelFetchDescendentsResponder::httpSuccess()
 {
+	const LLSD& content = getContent();
+	if (!content.isMap())
+	{
+		failureResult(HTTP_INTERNAL_ERROR, "Malformed response contents", content);
+		return;
+	}
 	LLInventoryModelBackgroundFetch *fetcher = LLInventoryModelBackgroundFetch::getInstance();
 	if (content.has("folders"))	
 	{
@@ -508,11 +518,12 @@ void LLInventoryModelFetchDescendentsResponder::result(const LLSD& content)
 		for(LLSD::array_const_iterator folder_it = content["bad_folders"].beginArray();
 			folder_it != content["bad_folders"].endArray();
 			++folder_it)
-		{	
+		{
+			// *TODO: Stop copying data
 			LLSD folder_sd = *folder_it;
 			
 			// These folders failed on the dataserver.  We probably don't want to retry them.
-			llinfos << "Folder " << folder_sd["folder_id"].asString() 
+			llwarns << "Folder " << folder_sd["folder_id"].asString() 
 					<< "Error: " << folder_sd["error"].asString() << llendl;
 		}
 	}
@@ -529,21 +540,19 @@ void LLInventoryModelFetchDescendentsResponder::result(const LLSD& content)
 }
 
 // If we get back an error (not found, etc...), handle it here.
-void LLInventoryModelFetchDescendentsResponder::errorWithContent(U32 status, const std::string& reason, const LLSD& content)
+void LLInventoryModelFetchDescendentsResponder::httpFailure()
 {
+	llwarns << dumpResponse() << llendl;
 	LLInventoryModelBackgroundFetch *fetcher = LLInventoryModelBackgroundFetch::getInstance();
 
-	llinfos << "LLInventoryModelFetchDescendentsResponder::error [status:"
-			<< status << "]: " << content << llendl;
-						
 	fetcher->incrFetchCount(-1);
 
-	if (status==499) // timed out
+	if (getStatus()==HTTP_INTERNAL_ERROR) // timed out or curl failure
 	{
 		for(LLSD::array_const_iterator folder_it = mRequestSD["folders"].beginArray();
 			folder_it != mRequestSD["folders"].endArray();
 			++folder_it)
-		{	
+		{
 			LLSD folder_sd = *folder_it;
 			LLUUID folder_id = folder_sd["folder_id"];
 			const BOOL recursive = getIsRecursive(folder_id);