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, 17 insertions, 9 deletions

diff --git a/indra/newview/llgroupmgr.cpp b/indra/newview/llgroupmgr.cpp
index cbd844cdac..472e3862ea 100644
--- a/indra/newview/llgroupmgr.cpp
+++ b/indra/newview/llgroupmgr.cpp
@@ -1843,23 +1843,31 @@ void LLGroupMgr::sendGroupMemberEjects(const LLUUID& group_id,
 // Responder class for capability group management
 class GroupMemberDataResponder : public LLHTTPClient::Responder
 {
+	LOG_CLASS(GroupMemberDataResponder);
 public:
-		GroupMemberDataResponder() {}
-		virtual ~GroupMemberDataResponder() {}
-		virtual void result(const LLSD& pContent);
-		virtual void errorWithContent(U32 pStatus, const std::string& pReason, const LLSD& pContent);
+	GroupMemberDataResponder() {}
+	virtual ~GroupMemberDataResponder() {}
+
 private:
-		LLSD mMemberData;
+	/* virtual */ void httpSuccess();
+	/* virtual */ void httpFailure();
+	LLSD mMemberData;
 };
 
-void GroupMemberDataResponder::errorWithContent(U32 pStatus, const std::string& pReason, const LLSD& pContent)
+void GroupMemberDataResponder::httpFailure()
 {
-	LL_WARNS("GrpMgr") << "Error receiving group member data [status:" 
-		<< pStatus << "]: " << pContent << LL_ENDL;
+	LL_WARNS("GrpMgr") << "Error receiving group member data "
+		<< dumpResponse() << LL_ENDL;
 }
 
-void GroupMemberDataResponder::result(const LLSD& content)
+void GroupMemberDataResponder::httpSuccess()
 {
+	const LLSD& content = getContent();
+	if (!content.isMap())
+	{
+		failureResult(HTTP_INTERNAL_ERROR, "Malformed response contents", content);
+		return;
+	}
 	LLGroupMgr::processCapGroupMembersRequest(content);
 }