MAINT-1144: Merge llhttpclient_test.cpp fix back to tip

24 files changed, 898 insertions, 251 deletions

diff --git a/indra/llmessage/llassetstorage.cpp b/indra/llmessage/llassetstorage.cpp
index 31cdb1219b..9b86daebe5 100644
--- a/indra/llmessage/llassetstorage.cpp
+++ b/indra/llmessage/llassetstorage.cpp
@@ -149,8 +149,8 @@ void LLAssetInfo::setFromNameValue( const LLNameValue& nv )
 	setName( buf );
 	buf.assign( str, pos2, std::string::npos );
 	setDescription( buf );
-	llinfos << "uuid: " << mUuid << llendl;
-	llinfos << "creator: " << mCreatorID << llendl;
+	LL_DEBUGS("AssetStorage") << "uuid: " << mUuid << llendl;
+	LL_DEBUGS("AssetStorage") << "creator: " << mCreatorID << llendl;
 }
 
 ///----------------------------------------------------------------------------
@@ -434,9 +434,9 @@ bool LLAssetStorage::findInStaticVFSAndInvokeCallback(const LLUUID& uuid, LLAsse
 // IW - uuid is passed by value to avoid side effects, please don't re-add &    
 void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LLGetAssetCallback callback, void *user_data, BOOL is_priority)
 {
-	lldebugs << "LLAssetStorage::getAssetData() - " << uuid << "," << LLAssetType::lookup(type) << llendl;
+	LL_DEBUGS("AssetStorage") << "LLAssetStorage::getAssetData() - " << uuid << "," << LLAssetType::lookup(type) << llendl;
 
-	llinfos << "ASSET_TRACE requesting " << uuid << " type " << LLAssetType::lookup(type) << llendl;
+	LL_DEBUGS("AssetStorage") << "ASSET_TRACE requesting " << uuid << " type " << LLAssetType::lookup(type) << llendl;
 
 	if (user_data)
 	{
@@ -446,7 +446,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 
 	if (mShutDown)
 	{
-		llinfos << "ASSET_TRACE cancelled " << uuid << " type " << LLAssetType::lookup(type) << " shutting down" << llendl;
+		LL_DEBUGS("AssetStorage") << "ASSET_TRACE cancelled " << uuid << " type " << LLAssetType::lookup(type) << " shutting down" << llendl;
 
 		if (callback)
 		{
@@ -468,7 +468,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 	// Try static VFS first.
 	if (findInStaticVFSAndInvokeCallback(uuid,type,callback,user_data))
 	{
-		llinfos << "ASSET_TRACE asset " << uuid << " found in static VFS" << llendl;
+		LL_DEBUGS("AssetStorage") << "ASSET_TRACE asset " << uuid << " found in static VFS" << llendl;
 		return;
 	}
 
@@ -486,7 +486,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 			callback(mVFS, uuid, type, user_data, LL_ERR_NOERR, LL_EXSTAT_VFS_CACHED);
 		}
 
-		llinfos << "ASSET_TRACE asset " << uuid << " found in VFS" << llendl;
+		LL_DEBUGS("AssetStorage") << "ASSET_TRACE asset " << uuid << " found in VFS" << llendl;
 	}
 	else
 	{
@@ -520,7 +520,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, LL
 		}
 		if (duplicate)
 		{
-			llinfos << "Adding additional non-duplicate request for asset " << uuid 
+			LL_DEBUGS("AssetStorage") << "Adding additional non-duplicate request for asset " << uuid 
 					<< "." << LLAssetType::lookup(type) << llendl;
 		}
 		
@@ -584,9 +584,9 @@ void LLAssetStorage::downloadCompleteCallback(
 	LLAssetType::EType file_type,
 	void* user_data, LLExtStat ext_status)
 {
-	llinfos << "ASSET_TRACE asset " << file_id << " downloadCompleteCallback" << llendl;
+	LL_DEBUGS("AssetStorage") << "ASSET_TRACE asset " << file_id << " downloadCompleteCallback" << llendl;
 
-	lldebugs << "LLAssetStorage::downloadCompleteCallback() for " << file_id
+	LL_DEBUGS("AssetStorage") << "LLAssetStorage::downloadCompleteCallback() for " << file_id
 		 << "," << LLAssetType::lookup(file_type) << llendl;
 	LLAssetRequest* req = (LLAssetRequest*)user_data;
 	if(!req)
@@ -731,7 +731,7 @@ void LLAssetStorage::getEstateAsset(const LLHost &object_sim, const LLUUID &agen
 			tpvf.setAsset(asset_id, atype);
 			tpvf.setCallback(downloadEstateAssetCompleteCallback, req);
 
-			llinfos << "Starting transfer for " << asset_id << llendl;
+			LL_DEBUGS("AssetStorage") << "Starting transfer for " << asset_id << llendl;
 			LLTransferTargetChannel *ttcp = gTransferManager.getTargetChannel(source_host, LLTCT_ASSET);
 			ttcp->requestTransfer(spe, tpvf, 100.f + (is_priority ? 1.f : 0.f));
 		}
@@ -871,7 +871,7 @@ void LLAssetStorage::getInvItemAsset(const LLHost &object_sim, const LLUUID &age
 			tpvf.setAsset(asset_id, atype);
 			tpvf.setCallback(downloadInvItemCompleteCallback, req);
 
-			llinfos << "Starting transfer for inventory asset "
+			LL_DEBUGS("AssetStorage") << "Starting transfer for inventory asset "
 				<< item_id << " owned by " << owner_id << "," << task_id
 				<< llendl;
 			LLTransferTargetChannel *ttcp = gTransferManager.getTargetChannel(source_host, LLTCT_ASSET);
@@ -1211,7 +1211,7 @@ bool LLAssetStorage::deletePendingRequest(LLAssetStorage::ERequestType rt,
 	request_list_t* requests = getRequestList(rt);
 	if (deletePendingRequestImpl(requests, asset_type, asset_id))
 	{
-		llinfos << "Asset " << getRequestName(rt) << " request for "
+		LL_DEBUGS("AssetStorage") << "Asset " << getRequestName(rt) << " request for "
 				<< asset_id << "." << LLAssetType::lookup(asset_type)
 				<< " removed from pending queue." << llendl;
 		return true;
@@ -1307,7 +1307,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid, LLAssetType::EType type, vo
 			user_data == ((LLLegacyAssetRequest *)tmp->mUserData)->mUserData)
 		{
 			// this is a duplicate from the same subsystem - throw it away
-			llinfos << "Discarding duplicate request for UUID " << uuid << llendl;
+			LL_DEBUGS("AssetStorage") << "Discarding duplicate request for UUID " << uuid << llendl;
 			return;
 		}
 	}
@@ -1490,7 +1490,7 @@ void LLAssetStorage::reportMetric( const LLUUID& asset_id, const LLAssetType::ET
 {
 	if( !metric_recipient )
 	{
-		llinfos << "Couldn't store LLAssetStoreage::reportMetric - no metrics_recipient" << llendl;
+		LL_DEBUGS("AssetStorage") << "Couldn't store LLAssetStoreage::reportMetric - no metrics_recipient" << llendl;
 		return;
 	}
 
diff --git a/indra/llmessage/llbuffer.cpp b/indra/llmessage/llbuffer.cpp
index 0316797f00..250cace6e9 100644
--- a/indra/llmessage/llbuffer.cpp
+++ b/indra/llmessage/llbuffer.cpp
@@ -32,6 +32,9 @@
 #include "llmath.h"
 #include "llmemtype.h"
 #include "llstl.h"
+#include "llthread.h"
+
+#define ASSERT_LLBUFFERARRAY_MUTEX_LOCKED llassert(!mMutexp || mMutexp->isSelfLocked());
 
 /** 
  * LLSegment
@@ -224,7 +227,8 @@ void LLHeapBuffer::allocate(S32 size)
  * LLBufferArray
  */
 LLBufferArray::LLBufferArray() :
-	mNextBaseChannel(0)
+	mNextBaseChannel(0),
+	mMutexp(NULL)
 {
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 }
@@ -233,6 +237,8 @@ LLBufferArray::~LLBufferArray()
 {
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	std::for_each(mBuffers.begin(), mBuffers.end(), DeletePointer());
+
+	delete mMutexp;
 }
 
 // static
@@ -243,14 +249,57 @@ LLChannelDescriptors LLBufferArray::makeChannelConsumer(
 	return rv;
 }
 
+void LLBufferArray::lock()
+{
+	if(mMutexp)
+	{
+		mMutexp->lock() ;
+	}
+}
+
+void LLBufferArray::unlock()
+{
+	if(mMutexp)
+	{
+		mMutexp->unlock() ;
+	}
+}
+
+LLMutex* LLBufferArray::getMutex()
+{
+	return mMutexp ;
+}
+
+void LLBufferArray::setThreaded(bool threaded)
+{
+	if(threaded)
+	{
+		if(!mMutexp)
+		{
+			mMutexp = new LLMutex(NULL);
+		}
+	}
+	else
+	{
+		if(mMutexp)
+		{
+			delete mMutexp ;
+			mMutexp = NULL ;
+		}
+	}
+}
+
 LLChannelDescriptors LLBufferArray::nextChannel()
 {
 	LLChannelDescriptors rv(mNextBaseChannel++);
 	return rv;
 }
 
+//mMutexp should be locked before calling this.
 S32 LLBufferArray::capacity() const
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
+
 	S32 total = 0;
 	const_buffer_iterator_t iter = mBuffers.begin();
 	const_buffer_iterator_t end = mBuffers.end();
@@ -263,6 +312,8 @@ S32 LLBufferArray::capacity() const
 
 bool LLBufferArray::append(S32 channel, const U8* src, S32 len)
 {
+	LLMutexLock lock(mMutexp) ;
+
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	std::vector<LLSegment> segments;
 	if(copyIntoBuffers(channel, src, len, segments))
@@ -273,8 +324,11 @@ bool LLBufferArray::append(S32 channel, const U8* src, S32 len)
 	return false;
 }
 
+//mMutexp should be locked before calling this.
 bool LLBufferArray::prepend(S32 channel, const U8* src, S32 len)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
+
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	std::vector<LLSegment> segments;
 	if(copyIntoBuffers(channel, src, len, segments))
@@ -293,6 +347,8 @@ bool LLBufferArray::insertAfter(
 {
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	std::vector<LLSegment> segments;
+
+	LLMutexLock lock(mMutexp) ;
 	if(mSegments.end() != segment)
 	{
 		++segment;
@@ -305,8 +361,11 @@ bool LLBufferArray::insertAfter(
 	return false;
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::splitAfter(U8* address)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
+
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	segment_iterator_t end = mSegments.end();
 	segment_iterator_t it = getSegment(address);
@@ -335,20 +394,26 @@ LLBufferArray::segment_iterator_t LLBufferArray::splitAfter(U8* address)
 	return rv;
 }
 							   
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::beginSegment()
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	return mSegments.begin();
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::endSegment()
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	return mSegments.end();
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::constructSegmentAfter(
 	U8* address,
 	LLSegment& segment)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	segment_iterator_t rv = mSegments.begin();
 	segment_iterator_t end = mSegments.end();
@@ -395,8 +460,10 @@ LLBufferArray::segment_iterator_t LLBufferArray::constructSegmentAfter(
 	return rv;
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::getSegment(U8* address)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	segment_iterator_t end = mSegments.end();
 	if(!address)
 	{
@@ -414,9 +481,11 @@ LLBufferArray::segment_iterator_t LLBufferArray::getSegment(U8* address)
 	return end;
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::const_segment_iterator_t LLBufferArray::getSegment(
 	U8* address) const
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	const_segment_iterator_t end = mSegments.end();
 	if(!address)
 	{
@@ -466,6 +535,8 @@ S32 LLBufferArray::countAfter(S32 channel, U8* start) const
 	S32 count = 0;
 	S32 offset = 0;
 	const_segment_iterator_t it;
+
+	LLMutexLock lock(mMutexp) ;
 	const_segment_iterator_t end = mSegments.end();
 	if(start)
 	{
@@ -517,6 +588,8 @@ U8* LLBufferArray::readAfter(
 	len = 0;
 	S32 bytes_to_copy = 0;
 	const_segment_iterator_t it;
+
+	LLMutexLock lock(mMutexp) ;
 	const_segment_iterator_t end = mSegments.end();
 	if(start)
 	{
@@ -568,6 +641,7 @@ U8* LLBufferArray::seek(
 	U8* start,
 	S32 delta) const
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	const_segment_iterator_t it;
 	const_segment_iterator_t end = mSegments.end();
@@ -709,9 +783,14 @@ U8* LLBufferArray::seek(
 	return rv;
 }
 
+//test use only
 bool LLBufferArray::takeContents(LLBufferArray& source)
 {
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
+
+	LLMutexLock lock(mMutexp);
+	source.lock();
+
 	std::copy(
 		source.mBuffers.begin(),
 		source.mBuffers.end(),
@@ -723,13 +802,17 @@ bool LLBufferArray::takeContents(LLBufferArray& source)
 		std::back_insert_iterator<segment_list_t>(mSegments));
 	source.mSegments.clear();
 	source.mNextBaseChannel = 0;
+	source.unlock();
+
 	return true;
 }
 
+//mMutexp should be locked before calling this.
 LLBufferArray::segment_iterator_t LLBufferArray::makeSegment(
 	S32 channel,
 	S32 len)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	// start at the end of the buffers, because it is the most likely
 	// to have free space.
@@ -765,8 +848,10 @@ LLBufferArray::segment_iterator_t LLBufferArray::makeSegment(
 	return send;
 }
 
+//mMutexp should be locked before calling this.
 bool LLBufferArray::eraseSegment(const segment_iterator_t& erase_iter)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 
 	// Find out which buffer contains the segment, and if it is found,
@@ -792,13 +877,14 @@ bool LLBufferArray::eraseSegment(const segment_iterator_t& erase_iter)
 	return rv;
 }
 
-
+//mMutexp should be locked before calling this.
 bool LLBufferArray::copyIntoBuffers(
 	S32 channel,
 	const U8* src,
 	S32 len,
 	std::vector<LLSegment>& segments)
 {
+	ASSERT_LLBUFFERARRAY_MUTEX_LOCKED
 	LLMemType m1(LLMemType::MTYPE_IO_BUFFER);
 	if(!src || !len) return false;
 	S32 copied = 0;
diff --git a/indra/llmessage/llbuffer.h b/indra/llmessage/llbuffer.h
index 1c42b6fbc6..ccdb9fa7ee 100644
--- a/indra/llmessage/llbuffer.h
+++ b/indra/llmessage/llbuffer.h
@@ -39,6 +39,7 @@
 #include <list>
 #include <vector>
 
+class LLMutex;
 /** 
  * @class LLChannelDescriptors
  * @brief A way simple interface to accesss channels inside a buffer
@@ -564,6 +565,29 @@ public:
 	 * @return Returns true on success.
 	 */
 	bool eraseSegment(const segment_iterator_t& iter);
+
+	/**
+	* @brief Lock the mutex if it exists
+	* This method locks mMutexp to make accessing LLBufferArray thread-safe
+	*/
+	void lock();
+
+	/**
+	* @brief Unlock the mutex if it exists
+	*/
+	void unlock();
+
+	/**
+	* @brief Return mMutexp
+	*/
+	LLMutex* getMutex();
+
+	/**
+	* @brief Set LLBufferArray to be shared across threads or not
+	* This method is to create mMutexp if is threaded.
+	* @param threaded Indicates this LLBufferArray instance is shared across threads if true.
+	*/
+	void setThreaded(bool threaded);
 	//@}
 
 protected:
@@ -595,6 +619,7 @@ protected:
 	S32 mNextBaseChannel;
 	buffer_list_t mBuffers;
 	segment_list_t mSegments;
+	LLMutex* mMutexp;
 };
 
 #endif // LL_LLBUFFER_H
diff --git a/indra/llmessage/llbufferstream.cpp b/indra/llmessage/llbufferstream.cpp
index 6257983c43..8d8ad05ad5 100644
--- a/indra/llmessage/llbufferstream.cpp
+++ b/indra/llmessage/llbufferstream.cpp
@@ -31,6 +31,7 @@
 
 #include "llbuffer.h"
 #include "llmemtype.h"
+#include "llthread.h"
 
 static const S32 DEFAULT_OUTPUT_SEGMENT_SIZE = 1024 * 4;
 
@@ -62,6 +63,7 @@ int LLBufferStreamBuf::underflow()
 		return EOF;
 	}
 
+	LLMutexLock lock(mBuffer->getMutex());
 	LLBufferArray::segment_iterator_t iter;
 	LLBufferArray::segment_iterator_t end = mBuffer->endSegment();
 	U8* last_pos = (U8*)gptr();
@@ -149,6 +151,7 @@ int LLBufferStreamBuf::overflow(int c)
 	// since we got here, we have a buffer, and we have a character to
 	// put on it.
 	LLBufferArray::segment_iterator_t it;
+	LLMutexLock lock(mBuffer->getMutex());
 	it = mBuffer->makeSegment(mChannels.out(), DEFAULT_OUTPUT_SEGMENT_SIZE);
 	if(it != mBuffer->endSegment())
 	{
@@ -210,6 +213,7 @@ int LLBufferStreamBuf::sync()
 
 	// *NOTE: I bet we could just --address if address is not NULL.
 	// Need to think about that.
+	LLMutexLock lock(mBuffer->getMutex());
 	address = mBuffer->seek(mChannels.out(), address, -1);
 	if(address)
 	{
@@ -273,6 +277,8 @@ streampos LLBufferStreamBuf::seekoff(
 			// NULL is fine
 			break;
 		}
+
+		LLMutexLock lock(mBuffer->getMutex());
 		address = mBuffer->seek(mChannels.in(), base_addr, off);
 		if(address)
 		{
@@ -304,6 +310,8 @@ streampos LLBufferStreamBuf::seekoff(
 			// NULL is fine
 			break;
 		}
+
+		LLMutexLock lock(mBuffer->getMutex());
 		address = mBuffer->seek(mChannels.out(), base_addr, off);
 		if(address)
 		{
diff --git a/indra/llmessage/llcurl.cpp b/indra/llmessage/llcurl.cpp
index 330028c926..b93d429feb 100644
--- a/indra/llmessage/llcurl.cpp
+++ b/indra/llmessage/llcurl.cpp
@@ -72,10 +72,9 @@
 
 static const U32 EASY_HANDLE_POOL_SIZE		= 5;
 static const S32 MULTI_PERFORM_CALL_REPEAT	= 5;
-static const S32 CURL_REQUEST_TIMEOUT = 30; // seconds
+static const S32 CURL_REQUEST_TIMEOUT = 30; // seconds per operation
 static const S32 MAX_ACTIVE_REQUEST_COUNT = 100;
 
-static 
 // DEBUG //
 S32 gCurlEasyCount = 0;
 S32 gCurlMultiCount = 0;
@@ -86,9 +85,12 @@ S32 gCurlMultiCount = 0;
 std::vector<LLMutex*> LLCurl::sSSLMutex;
 std::string LLCurl::sCAPath;
 std::string LLCurl::sCAFile;
-
-bool LLCurl::sMultiThreaded = false;
-static U32 sMainThreadID = 0;
+LLCurlThread* LLCurl::sCurlThread = NULL ;
+LLMutex* LLCurl::sHandleMutexp = NULL ;
+S32      LLCurl::sTotalHandles = 0 ;
+bool     LLCurl::sNotQuitting = true;
+F32      LLCurl::sCurlRequestTimeOut = 120.f; //seonds
+S32      LLCurl::sMaxHandles = 256; //max number of handles, (multi handles and easy handles combined).
 
 void check_curl_code(CURLcode code)
 {
@@ -221,17 +223,20 @@ namespace boost
 
 std::set<CURL*> LLCurl::Easy::sFreeHandles;
 std::set<CURL*> LLCurl::Easy::sActiveHandles;
-LLMutex* LLCurl::Easy::sHandleMutex = NULL;
-LLMutex* LLCurl::Easy::sMultiMutex = NULL;
+LLMutex* LLCurl::Easy::sHandleMutexp = NULL ;
 
 //static
 CURL* LLCurl::Easy::allocEasyHandle()
 {
+	llassert(LLCurl::getCurlThread()) ;
+
 	CURL* ret = NULL;
-	LLMutexLock lock(sHandleMutex);
+
+	LLMutexLock lock(sHandleMutexp) ;
+
 	if (sFreeHandles.empty())
 	{
-		ret = curl_easy_init();
+		ret = LLCurl::newEasyHandle();
 	}
 	else
 	{
@@ -251,20 +256,30 @@ CURL* LLCurl::Easy::allocEasyHandle()
 //static
 void LLCurl::Easy::releaseEasyHandle(CURL* handle)
 {
+	static const S32 MAX_NUM_FREE_HANDLES = 32 ;
+
 	if (!handle)
 	{
-		llerrs << "handle cannot be NULL!" << llendl;
+		return ; //handle allocation failed.
+		//llerrs << "handle cannot be NULL!" << llendl;
 	}
 
-	LLMutexLock lock(sHandleMutex);
-	
+	LLMutexLock lock(sHandleMutexp) ;
 	if (sActiveHandles.find(handle) != sActiveHandles.end())
 	{
 		sActiveHandles.erase(handle);
+
+		if(sFreeHandles.size() < MAX_NUM_FREE_HANDLES)
+		{
 		sFreeHandles.insert(handle);
 	}
 	else
 	{
+			LLCurl::deleteEasyHandle(handle) ;
+		}
+	}
+	else
+	{
 		llerrs << "Invalid handle." << llendl;
 	}
 }
@@ -304,6 +319,14 @@ LLCurl::Easy::~Easy()
 	--gCurlEasyCount;
 	curl_slist_free_all(mHeaders);
 	for_each(mStrings.begin(), mStrings.end(), DeletePointerArray());
+
+	if (mResponder && LLCurl::sNotQuitting) //aborted
+	{	
+		std::string reason("Request timeout, aborted.") ;
+		mResponder->completedRaw(408, //HTTP_REQUEST_TIME_OUT, timeout, abort
+			reason, mChannels, mOutput);		
+	}
+	mResponder = NULL;
 }
 
 void LLCurl::Easy::resetState()
@@ -430,9 +453,9 @@ size_t curlReadCallback(char* data, size_t size, size_t nmemb, void* user_data)
 	LLCurl::Easy* easy = (LLCurl::Easy*)user_data;
 	
 	S32 n = size * nmemb;
-	S32 startpos = easy->getInput().tellg();
+	S32 startpos = (S32)easy->getInput().tellg();
 	easy->getInput().seekg(0, std::ios::end);
-	S32 endpos = easy->getInput().tellg();
+	S32 endpos = (S32)easy->getInput().tellg();
 	easy->getInput().seekg(startpos, std::ios::beg);
 	S32 maxn = endpos - startpos;
 	n = llmin(n, maxn);
@@ -476,6 +499,7 @@ void LLCurl::Easy::prepRequest(const std::string& url,
 	LLProxy::getInstance()->applyProxySettings(this);
 
 	mOutput.reset(new LLBufferArray);
+	mOutput->setThreaded(true);
 	setopt(CURLOPT_WRITEFUNCTION, (void*)&curlWriteCallback);
 	setopt(CURLOPT_WRITEDATA, (void*)this);
 
@@ -519,48 +543,56 @@ void LLCurl::Easy::prepRequest(const std::string& url,
 }
 
 ////////////////////////////////////////////////////////////////////////////
-
-LLCurl::Multi::Multi()
-	: LLThread("Curl Multi"),
-	  mQueued(0),
+LLCurl::Multi::Multi(F32 idle_time_out)
+	: mQueued(0),
 	  mErrorCount(0),
-	  mPerformState(PERFORM_STATE_READY)
+	  mState(STATE_READY),
+	  mDead(FALSE),
+	  mMutexp(NULL),
+	  mDeletionMutexp(NULL),
+	  mEasyMutexp(NULL)
 {
-	mQuitting = false;
-
-	mThreaded = LLCurl::sMultiThreaded && LLThread::currentID() == sMainThreadID;
-	if (mThreaded)
-	{
-		mSignal = new LLCondition(NULL);
-	}
-	else
-	{
-		mSignal = NULL;
-	}
-
-	mCurlMultiHandle = curl_multi_init();
+	mCurlMultiHandle = LLCurl::newMultiHandle();
 	if (!mCurlMultiHandle)
 	{
 		llwarns << "curl_multi_init() returned NULL! Easy handles: " << gCurlEasyCount << " Multi handles: " << gCurlMultiCount << llendl;
-		mCurlMultiHandle = curl_multi_init();
+		mCurlMultiHandle = LLCurl::newMultiHandle();
 	}
 	
-	llassert_always(mCurlMultiHandle);
+	//llassert_always(mCurlMultiHandle);	
+
+	if(mCurlMultiHandle)
+	{
+	if(LLCurl::getCurlThread()->getThreaded())
+	{
+		mMutexp = new LLMutex(NULL) ;
+		mDeletionMutexp = new LLMutex(NULL) ;
+		mEasyMutexp = new LLMutex(NULL) ;
+	}
+	LLCurl::getCurlThread()->addMulti(this) ;
+
+		mIdleTimeOut = idle_time_out ;
+		if(mIdleTimeOut < LLCurl::sCurlRequestTimeOut)
+		{
+			mIdleTimeOut = LLCurl::sCurlRequestTimeOut ;
+		}
+
 	++gCurlMultiCount;
 }
+}
 
 LLCurl::Multi::~Multi()
 {
-	llassert(isStopped());
+	cleanup() ;	
+}
 
-	if (LLCurl::sMultiThreaded)
+void LLCurl::Multi::cleanup()
+{
+	if(!mCurlMultiHandle)
 	{
-		LLCurl::Easy::sMultiMutex->lock();
+		return ; //nothing to clean.
 	}
 
-	delete mSignal;
-	mSignal = NULL;
-
 	// Clean up active
 	for(easy_active_list_t::iterator iter = mEasyActiveList.begin();
 		iter != mEasyActiveList.end(); ++iter)
@@ -576,76 +608,157 @@ LLCurl::Multi::~Multi()
 	for_each(mEasyFreeList.begin(), mEasyFreeList.end(), DeletePointer());	
 	mEasyFreeList.clear();
 
-	check_curl_multi_code(curl_multi_cleanup(mCurlMultiHandle));
+	check_curl_multi_code(LLCurl::deleteMultiHandle(mCurlMultiHandle));
+	mCurlMultiHandle = NULL ;
+
+	delete mMutexp ;
+	mMutexp = NULL ;
+	delete mDeletionMutexp ;
+	mDeletionMutexp = NULL ;
+	delete mEasyMutexp ;
+	mEasyMutexp = NULL ;
+
+	mQueued = 0 ;
+	mState = STATE_COMPLETED;
+	
 	--gCurlMultiCount;
 
-	if (LLCurl::sMultiThreaded)
+	return ;
+}
+
+void LLCurl::Multi::lock()
+{
+	if(mMutexp)
 	{
-		LLCurl::Easy::sMultiMutex->unlock();
+		mMutexp->lock() ;
 	}
 }
 
-CURLMsg* LLCurl::Multi::info_read(S32* msgs_in_queue)
+void LLCurl::Multi::unlock()
 {
-	CURLMsg* curlmsg = curl_multi_info_read(mCurlMultiHandle, msgs_in_queue);
-	return curlmsg;
+	if(mMutexp)
+	{
+		mMutexp->unlock() ;
+	}
+}
+
+void LLCurl::Multi::markDead()
+{
+	LLMutexLock lock(mDeletionMutexp) ;
+	
+	mDead = TRUE ;
+	LLCurl::getCurlThread()->setPriority(mHandle, LLQueuedThread::PRIORITY_URGENT) ; 
 }
 
-void LLCurl::Multi::perform()
+void LLCurl::Multi::setState(LLCurl::Multi::ePerformState state)
 {
-	if (mThreaded)
+	lock() ;
+	mState = state ;
+	unlock() ;
+
+	if(mState == STATE_READY)
 	{
-		if (mPerformState == PERFORM_STATE_READY)
-		{
-			mSignal->signal();
-		}
+		LLCurl::getCurlThread()->setPriority(mHandle, LLQueuedThread::PRIORITY_NORMAL) ;
+	}	
+}
+
+LLCurl::Multi::ePerformState LLCurl::Multi::getState()
+{
+	return mState;
+}
+	
+bool LLCurl::Multi::isCompleted() 
+{
+	return STATE_COMPLETED == getState() ;
+}
+
+bool LLCurl::Multi::waitToComplete()
+{
+	if(!isValid())
+	{
+		return true ;
 	}
-	else
+
+	if(!mMutexp) //not threaded
+	{
+		doPerform() ;
+		return true ;
+	}
+
+	bool completed = (STATE_COMPLETED == mState) ;
+	if(!completed)
 	{
-		doPerform();
+		LLCurl::getCurlThread()->setPriority(mHandle, LLQueuedThread::PRIORITY_HIGH) ;
 	}
+	
+	return completed;
 }
 
-void LLCurl::Multi::run()
+CURLMsg* LLCurl::Multi::info_read(S32* msgs_in_queue)
 {
-	llassert(mThreaded);
+	LLMutexLock lock(mMutexp) ;
 
-	while (!mQuitting)
-	{
-		mSignal->wait();
-		mPerformState = PERFORM_STATE_PERFORMING;
-		if (!mQuitting)
-		{
-			LLMutexLock lock(LLCurl::Easy::sMultiMutex);
-			doPerform();
-		}
-	}
+	CURLMsg* curlmsg = curl_multi_info_read(mCurlMultiHandle, msgs_in_queue);
+	return curlmsg;
 }
 
-void LLCurl::Multi::doPerform()
+//return true if dead
+bool LLCurl::Multi::doPerform()
 {
-	S32 q = 0;
-	for (S32 call_count = 0;
-			call_count < MULTI_PERFORM_CALL_REPEAT;
-			call_count += 1)
+	LLMutexLock lock(mDeletionMutexp) ;
+	
+	bool dead = mDead ;
+
+	if(mDead)
 	{
-		CURLMcode code = curl_multi_perform(mCurlMultiHandle, &q);
-		if (CURLM_CALL_MULTI_PERFORM != code || q == 0)
+		setState(STATE_COMPLETED);
+		mQueued = 0 ;
+	}
+	else if(getState() != STATE_COMPLETED)
+	{		
+		setState(STATE_PERFORMING);
+
+		S32 q = 0;
+		for (S32 call_count = 0;
+				call_count < MULTI_PERFORM_CALL_REPEAT;
+				call_count++)
 		{
-			check_curl_multi_code(code);
-			break;
+			LLMutexLock lock(mMutexp) ;
+
+			//WARNING: curl_multi_perform will block for many hundreds of milliseconds
+			// NEVER call this from the main thread, and NEVER allow the main thread to 
+			// wait on a mutex held by this thread while curl_multi_perform is executing
+			CURLMcode code = curl_multi_perform(mCurlMultiHandle, &q);
+			if (CURLM_CALL_MULTI_PERFORM != code || q == 0)
+			{
+				check_curl_multi_code(code);
+			
+				break;
+			}
 		}
-	
+
+		mQueued = q;	
+		setState(STATE_COMPLETED) ;
+		mIdleTimer.reset() ;
+	}
+	else if(mIdleTimer.getElapsedTimeF32() > mIdleTimeOut) //idle for too long, remove it.
+	{
+		dead = true ;
 	}
-	mQueued = q;
-	mPerformState = PERFORM_STATE_COMPLETED;
+
+	return dead ;
 }
 
 S32 LLCurl::Multi::process()
 {
-	perform();
+	if(!isValid())
+	{
+		return 0 ;
+	}
+
+	waitToComplete() ;
 
-	if (mPerformState != PERFORM_STATE_COMPLETED)
+	if (getState() != STATE_COMPLETED)
 	{
 		return 0;
 	}
@@ -660,10 +773,19 @@ S32 LLCurl::Multi::process()
 		if (msg->msg == CURLMSG_DONE)
 		{
 			U32 response = 0;
-			easy_active_map_t::iterator iter = mEasyActiveMap.find(msg->easy_handle);
-			if (iter != mEasyActiveMap.end())
+			Easy* easy = NULL ;
+
+			{
+				LLMutexLock lock(mEasyMutexp) ;
+				easy_active_map_t::iterator iter = mEasyActiveMap.find(msg->easy_handle);
+				if (iter != mEasyActiveMap.end())
+				{
+					easy = iter->second;
+				}
+			}
+
+			if(easy)
 			{
-				Easy* easy = iter->second;
 				response = easy->report(msg->data.result);
 				removeEasy(easy);
 			}
@@ -681,25 +803,28 @@ S32 LLCurl::Multi::process()
 		}
 	}
 
-	mPerformState = PERFORM_STATE_READY;
+	setState(STATE_READY);
+
 	return processed;
 }
 
 LLCurl::Easy* LLCurl::Multi::allocEasy()
 {
-	Easy* easy = 0;
+	Easy* easy = 0;	
 
 	if (mEasyFreeList.empty())
-	{
+	{		
 		easy = Easy::getEasy();
 	}
 	else
 	{
+		LLMutexLock lock(mEasyMutexp) ;
 		easy = *(mEasyFreeList.begin());
 		mEasyFreeList.erase(easy);
 	}
 	if (easy)
 	{
+		LLMutexLock lock(mEasyMutexp) ;
 		mEasyActiveList.insert(easy);
 		mEasyActiveMap[easy->getCurlHandle()] = easy;
 	}
@@ -708,6 +833,7 @@ LLCurl::Easy* LLCurl::Multi::allocEasy()
 
 bool LLCurl::Multi::addEasy(Easy* easy)
 {
+	LLMutexLock lock(mMutexp) ;
 	CURLMcode mcode = curl_multi_add_handle(mCurlMultiHandle, easy->getCurlHandle());
 	check_curl_multi_code(mcode);
 	//if (mcode != CURLM_OK)
@@ -720,25 +846,156 @@ bool LLCurl::Multi::addEasy(Easy* easy)
 
 void LLCurl::Multi::easyFree(Easy* easy)
 {
+	if(mEasyMutexp)
+	{
+		mEasyMutexp->lock() ;
+	}
+
 	mEasyActiveList.erase(easy);
 	mEasyActiveMap.erase(easy->getCurlHandle());
+
 	if (mEasyFreeList.size() < EASY_HANDLE_POOL_SIZE)
-	{
-		easy->resetState();
+	{		
 		mEasyFreeList.insert(easy);
+		
+		if(mEasyMutexp)
+		{
+			mEasyMutexp->unlock() ;
+		}
+
+		easy->resetState();
 	}
 	else
 	{
+		if(mEasyMutexp)
+		{
+			mEasyMutexp->unlock() ;
+		}
 		delete easy;
 	}
 }
 
 void LLCurl::Multi::removeEasy(Easy* easy)
 {
-	check_curl_multi_code(curl_multi_remove_handle(mCurlMultiHandle, easy->getCurlHandle()));
+	{
+		LLMutexLock lock(mMutexp) ;
+		check_curl_multi_code(curl_multi_remove_handle(mCurlMultiHandle, easy->getCurlHandle()));
+	}
 	easyFree(easy);
 }
 
+//------------------------------------------------------------
+//LLCurlThread
+LLCurlThread::CurlRequest::CurlRequest(handle_t handle, LLCurl::Multi* multi, LLCurlThread* curl_thread) :
+	LLQueuedThread::QueuedRequest(handle, LLQueuedThread::PRIORITY_NORMAL, FLAG_AUTO_COMPLETE),
+	mMulti(multi),
+	mCurlThread(curl_thread)
+{	
+}
+
+LLCurlThread::CurlRequest::~CurlRequest()
+{	
+	if(mMulti)
+	{
+		mCurlThread->deleteMulti(mMulti) ;
+		mMulti = NULL ;
+	}
+}
+
+bool LLCurlThread::CurlRequest::processRequest()
+{
+	bool completed = true ;
+	if(mMulti)
+	{
+		completed = mCurlThread->doMultiPerform(mMulti) ;
+
+		if(!completed)
+		{
+		setPriority(LLQueuedThread::PRIORITY_LOW) ;
+	}
+	}
+
+	return completed ;
+}
+
+void LLCurlThread::CurlRequest::finishRequest(bool completed)
+{
+	if(mMulti->isDead())
+	{
+	mCurlThread->deleteMulti(mMulti) ;
+	}
+	else
+	{
+		mCurlThread->cleanupMulti(mMulti) ; //being idle too long, remove the request.
+	}
+
+	mMulti = NULL ;
+}
+	
+LLCurlThread::LLCurlThread(bool threaded) :
+	LLQueuedThread("curlthread", threaded)
+{
+}
+	
+//virtual 
+LLCurlThread::~LLCurlThread() 
+{
+}
+
+S32 LLCurlThread::update(F32 max_time_ms)
+{	
+	return LLQueuedThread::update(max_time_ms);
+}
+
+void LLCurlThread::addMulti(LLCurl::Multi* multi)
+{
+	multi->mHandle = generateHandle() ;
+
+	CurlRequest* req = new CurlRequest(multi->mHandle, multi, this) ;
+
+	if (!addRequest(req))
+	{
+		llwarns << "curl request added when the thread is quitted" << llendl;
+	}
+}
+	
+void LLCurlThread::killMulti(LLCurl::Multi* multi)
+{
+	if(!multi)
+	{
+		return ;
+	}
+
+	if(multi->isValid())
+	{
+	multi->markDead() ;
+}
+	else
+	{
+		deleteMulti(multi) ;
+	}
+}
+
+//private
+bool LLCurlThread::doMultiPerform(LLCurl::Multi* multi) 
+{
+	return multi->doPerform() ;
+}
+
+//private
+void LLCurlThread::deleteMulti(LLCurl::Multi* multi) 
+{
+	delete multi ;
+}
+
+//private
+void LLCurlThread::cleanupMulti(LLCurl::Multi* multi) 
+{
+	multi->cleanup() ;
+}
+
+//------------------------------------------------------------
+
 //static
 std::string LLCurl::strerror(CURLcode errorcode)
 {
@@ -753,39 +1010,30 @@ LLCurlRequest::LLCurlRequest() :
 	mActiveMulti(NULL),
 	mActiveRequestCount(0)
 {
-	mThreadID = LLThread::currentID();
 	mProcessing = FALSE;
 }
 
 LLCurlRequest::~LLCurlRequest()
 {
-	llassert_always(mThreadID == LLThread::currentID());
-
 	//stop all Multi handle background threads
 	for (curlmulti_set_t::iterator iter = mMultiSet.begin(); iter != mMultiSet.end(); ++iter)
 	{
-		LLCurl::Multi* multi = *iter;
-		multi->mQuitting = true;
-		if (multi->mThreaded)
-		{
-			while (!multi->isStopped())
-			{
-				multi->mSignal->signal();
-				apr_sleep(1000);
-			}
-		}
+		LLCurl::getCurlThread()->killMulti(*iter) ;
 	}
-	for_each(mMultiSet.begin(), mMultiSet.end(), DeletePointer());
+	mMultiSet.clear() ;
 }
 
 void LLCurlRequest::addMulti()
 {
-	llassert_always(mThreadID == LLThread::currentID());
 	LLCurl::Multi* multi = new LLCurl::Multi();
-	if (multi->mThreaded)
+	if(!multi->isValid())
 	{
-		multi->start();
+		LLCurl::getCurlThread()->killMulti(multi) ;
+		mActiveMulti = NULL ;
+		mActiveRequestCount = 0 ;
+		return;
 	}
+	
 	mMultiSet.insert(multi);
 	mActiveMulti = multi;
 	mActiveRequestCount = 0;
@@ -799,7 +1047,12 @@ LLCurl::Easy* LLCurlRequest::allocEasy()
 	{
 		addMulti();
 	}
-	llassert_always(mActiveMulti);
+	if(!mActiveMulti)
+	{
+		return NULL ;
+	}
+
+	//llassert_always(mActiveMulti);
 	++mActiveRequestCount;
 	LLCurl::Easy* easy = mActiveMulti->allocEasy();
 	return easy;
@@ -901,7 +1154,6 @@ bool LLCurlRequest::post(const std::string& url,
 // Note: call once per frame
 S32 LLCurlRequest::process()
 {
-	llassert_always(mThreadID == LLThread::currentID());
 	S32 res = 0;
 
 	mProcessing = TRUE;
@@ -910,22 +1162,25 @@ S32 LLCurlRequest::process()
 	{
 		curlmulti_set_t::iterator curiter = iter++;
 		LLCurl::Multi* multi = *curiter;
+
+		if(!multi->isValid())
+		{
+			if(multi == mActiveMulti)
+			{				
+				mActiveMulti = NULL ;
+				mActiveRequestCount = 0 ;
+			}
+			mMultiSet.erase(curiter) ;
+			LLCurl::getCurlThread()->killMulti(multi) ;
+			continue ;
+		}
+
 		S32 tres = multi->process();
 		res += tres;
 		if (multi != mActiveMulti && tres == 0 && multi->mQueued == 0)
 		{
 			mMultiSet.erase(curiter);
-			multi->mQuitting = true;
-			if (multi->mThreaded)
-			{
-				while (!multi->isStopped())
-				{
-					multi->mSignal->signal();
-					apr_sleep(1000);
-				}
-			}
-
-			delete multi;
+			LLCurl::getCurlThread()->killMulti(multi);
 		}
 	}
 	mProcessing = FALSE;
@@ -934,15 +1189,27 @@ S32 LLCurlRequest::process()
 
 S32 LLCurlRequest::getQueued()
 {
-	llassert_always(mThreadID == LLThread::currentID());
 	S32 queued = 0;
 	for (curlmulti_set_t::iterator iter = mMultiSet.begin();
 		 iter != mMultiSet.end(); )
 	{
 		curlmulti_set_t::iterator curiter = iter++;
 		LLCurl::Multi* multi = *curiter;
+		
+		if(!multi->isValid())
+		{
+			if(multi == mActiveMulti)
+			{				
+				mActiveMulti = NULL ;
+				mActiveRequestCount = 0 ;
+			}
+			LLCurl::getCurlThread()->killMulti(multi);
+			mMultiSet.erase(curiter) ;
+			continue ;
+		}
+
 		queued += multi->mQueued;
-		if (multi->mPerformState != LLCurl::Multi::PERFORM_STATE_READY)
+		if (multi->getState() != LLCurl::Multi::STATE_READY)
 		{
 			++queued;
 		}
@@ -959,10 +1226,9 @@ LLCurlEasyRequest::LLCurlEasyRequest()
 	  mResultReturned(false)
 {
 	mMulti = new LLCurl::Multi();
-	if (mMulti->mThreaded)
+	
+	if(mMulti->isValid())
 	{
-		mMulti->start();
-	}
 	mEasy = mMulti->allocEasy();
 	if (mEasy)
 	{
@@ -972,24 +1238,22 @@ LLCurlEasyRequest::LLCurlEasyRequest()
 		LLProxy::getInstance()->applyProxySettings(mEasy);
 	}
 }
+	else
+	{
+		LLCurl::getCurlThread()->killMulti(mMulti) ;
+		mEasy = NULL ;
+		mMulti = NULL ;
+	}
+}
 
 LLCurlEasyRequest::~LLCurlEasyRequest()
 {
-	mMulti->mQuitting = true;
-	if (mMulti->mThreaded)
-	{
-		while (!mMulti->isStopped())
-		{
-			mMulti->mSignal->signal();
-			apr_sleep(1000);
-		}
-	}
-	delete mMulti;
+	LLCurl::getCurlThread()->killMulti(mMulti) ;
 }
 	
 void LLCurlEasyRequest::setopt(CURLoption option, S32 value)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(option, value);
 	}
@@ -997,7 +1261,7 @@ void LLCurlEasyRequest::setopt(CURLoption option, S32 value)
 
 void LLCurlEasyRequest::setoptString(CURLoption option, const std::string& value)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setoptString(option, value);
 	}
@@ -1005,7 +1269,7 @@ void LLCurlEasyRequest::setoptString(CURLoption option, const std::string& value
 
 void LLCurlEasyRequest::setPost(char* postdata, S32 size)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(CURLOPT_POST, 1);
 		mEasy->setopt(CURLOPT_POSTFIELDS, postdata);
@@ -1015,7 +1279,7 @@ void LLCurlEasyRequest::setPost(char* postdata, S32 size)
 
 void LLCurlEasyRequest::setHeaderCallback(curl_header_callback callback, void* userdata)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(CURLOPT_HEADERFUNCTION, (void*)callback);
 		mEasy->setopt(CURLOPT_HEADERDATA, userdata); // aka CURLOPT_WRITEHEADER
@@ -1024,7 +1288,7 @@ void LLCurlEasyRequest::setHeaderCallback(curl_header_callback callback, void* u
 
 void LLCurlEasyRequest::setWriteCallback(curl_write_callback callback, void* userdata)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(CURLOPT_WRITEFUNCTION, (void*)callback);
 		mEasy->setopt(CURLOPT_WRITEDATA, userdata);
@@ -1033,7 +1297,7 @@ void LLCurlEasyRequest::setWriteCallback(curl_write_callback callback, void* use
 
 void LLCurlEasyRequest::setReadCallback(curl_read_callback callback, void* userdata)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(CURLOPT_READFUNCTION, (void*)callback);
 		mEasy->setopt(CURLOPT_READDATA, userdata);
@@ -1042,7 +1306,7 @@ void LLCurlEasyRequest::setReadCallback(curl_read_callback callback, void* userd
 
 void LLCurlEasyRequest::setSSLCtxCallback(curl_ssl_ctx_callback callback, void* userdata)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setopt(CURLOPT_SSL_CTX_FUNCTION, (void*)callback);
 		mEasy->setopt(CURLOPT_SSL_CTX_DATA, userdata);
@@ -1051,7 +1315,7 @@ void LLCurlEasyRequest::setSSLCtxCallback(curl_ssl_ctx_callback callback, void*
 
 void LLCurlEasyRequest::slist_append(const char* str)
 {
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->slist_append(str);
 	}
@@ -1062,7 +1326,7 @@ void LLCurlEasyRequest::sendRequest(const std::string& url)
 	llassert_always(!mRequestSent);
 	mRequestSent = true;
 	lldebugs << url << llendl;
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mEasy->setHeaders();
 		mEasy->setoptString(CURLOPT_URL, url);
@@ -1074,25 +1338,24 @@ void LLCurlEasyRequest::requestComplete()
 {
 	llassert_always(mRequestSent);
 	mRequestSent = false;
-	if (mEasy)
+	if (isValid() && mEasy)
 	{
 		mMulti->removeEasy(mEasy);
 	}
 }
 
-void LLCurlEasyRequest::perform()
-{
-	mMulti->perform();
-}
-
 // Usage: Call getRestult until it returns false (no more messages)
 bool LLCurlEasyRequest::getResult(CURLcode* result, LLCurl::TransferInfo* info)
 {
-	if (mMulti->mPerformState != LLCurl::Multi::PERFORM_STATE_COMPLETED)
+	if(!isValid())
+	{
+		return false ;
+	}
+	if (!mMulti->isCompleted())
 	{ //we're busy, try again later
 		return false;
 	}
-	mMulti->mPerformState = LLCurl::Multi::PERFORM_STATE_READY;
+	mMulti->setState(LLCurl::Multi::STATE_READY) ;
 
 	if (!mEasy)
 	{
@@ -1152,7 +1415,7 @@ CURLMsg* LLCurlEasyRequest::info_read(S32* q, LLCurl::TransferInfo* info)
 
 std::string LLCurlEasyRequest::getErrorString()
 {
-	return mEasy ? std::string(mEasy->getErrorBuffer()) : std::string();
+	return isValid() &&  mEasy ? std::string(mEasy->getErrorBuffer()) : std::string();
 }
 
 ////////////////////////////////////////////////////////////////////////////
@@ -1178,10 +1441,11 @@ unsigned long LLCurl::ssl_thread_id(void)
 }
 #endif
 
-void LLCurl::initClass(bool multi_threaded)
+void LLCurl::initClass(F32 curl_reuest_timeout, S32 max_number_handles, bool multi_threaded)
 {
-	sMainThreadID = LLThread::currentID();
-	sMultiThreaded = multi_threaded;
+	sCurlRequestTimeOut = curl_reuest_timeout ; //seconds
+	sMaxHandles = max_number_handles ; //max number of handles, (multi handles and easy handles combined).
+
 	// Do not change this "unless you are familiar with and mean to control 
 	// internal operations of libcurl"
 	// - http://curl.haxx.se/libcurl/c/curl_global_init.html
@@ -1189,9 +1453,6 @@ void LLCurl::initClass(bool multi_threaded)
 
 	check_curl_code(code);
 	
-	Easy::sHandleMutex = new LLMutex(NULL);
-	Easy::sMultiMutex = new LLMutex(NULL);
-
 #if SAFE_SSL
 	S32 mutex_count = CRYPTO_num_locks();
 	for (S32 i=0; i<mutex_count; i++)
@@ -1201,31 +1462,118 @@ void LLCurl::initClass(bool multi_threaded)
 	CRYPTO_set_id_callback(&LLCurl::ssl_thread_id);
 	CRYPTO_set_locking_callback(&LLCurl::ssl_locking_callback);
 #endif
+
+	sCurlThread = new LLCurlThread(multi_threaded) ;
+	if(multi_threaded)
+	{
+		sHandleMutexp = new LLMutex(NULL) ;
+		Easy::sHandleMutexp = new LLMutex(NULL) ;
+	}
 }
 
 void LLCurl::cleanupClass()
 {
+	sNotQuitting = false; //set quitting
+
+	//shut down curl thread
+	while(1)
+	{
+		if(!sCurlThread->update(1)) //finish all tasks
+		{
+			break ;
+		}
+	}
+	sCurlThread->shutdown() ;
+	delete sCurlThread ;
+	sCurlThread = NULL ;
+
 #if SAFE_SSL
 	CRYPTO_set_locking_callback(NULL);
 	for_each(sSSLMutex.begin(), sSSLMutex.end(), DeletePointer());
 #endif
 
-	delete Easy::sHandleMutex;
-	Easy::sHandleMutex = NULL;
-	delete Easy::sMultiMutex;
-	Easy::sMultiMutex = NULL;
-
 	for (std::set<CURL*>::iterator iter = Easy::sFreeHandles.begin(); iter != Easy::sFreeHandles.end(); ++iter)
 	{
 		CURL* curl = *iter;
-		curl_easy_cleanup(curl);
+		LLCurl::deleteEasyHandle(curl);
 	}
 
 	Easy::sFreeHandles.clear();
 
+	delete Easy::sHandleMutexp ;
+	Easy::sHandleMutexp = NULL ;
+
+	delete sHandleMutexp ;
+	sHandleMutexp = NULL ;
+
 	llassert(Easy::sActiveHandles.empty());
 }
 
+//static 
+CURLM* LLCurl::newMultiHandle()
+{
+	LLMutexLock lock(sHandleMutexp) ;
+
+	if(sTotalHandles + 1 > sMaxHandles)
+	{
+		llwarns << "no more handles available." << llendl ;
+		return NULL ; //failed
+	}
+	sTotalHandles++;
+
+	CURLM* ret = curl_multi_init() ;
+	if(!ret)
+	{
+		llwarns << "curl_multi_init failed." << llendl ;
+	}
+
+	return ret ;
+}
+
+//static 
+CURLMcode  LLCurl::deleteMultiHandle(CURLM* handle)
+{
+	if(handle)
+	{
+		LLMutexLock lock(sHandleMutexp) ;		
+		sTotalHandles-- ;
+		return curl_multi_cleanup(handle) ;
+	}
+	return CURLM_OK ;
+}
+
+//static 
+CURL*  LLCurl::newEasyHandle()
+{
+	LLMutexLock lock(sHandleMutexp) ;
+
+	if(sTotalHandles + 1 > sMaxHandles)
+	{
+		llwarns << "no more handles available." << llendl ;
+		return NULL ; //failed
+	}
+	sTotalHandles++;
+
+	CURL* ret = curl_easy_init() ;
+	if(!ret)
+	{
+		llwarns << "curl_easy_init failed." << llendl ;
+	}
+
+	return ret ;
+}
+
+//static 
+void  LLCurl::deleteEasyHandle(CURL* handle)
+{
+	if(handle)
+	{
+		LLMutexLock lock(sHandleMutexp) ;
+		curl_easy_cleanup(handle) ;
+		sTotalHandles-- ;
+	}
+}
+
 const unsigned int LLCurl::MAX_REDIRECTS = 5;
 
 // Provide access to LLCurl free functions outside of llcurl.cpp without polluting the global namespace.
diff --git a/indra/llmessage/llcurl.h b/indra/llmessage/llcurl.h
index 87de202717..fd664c0fa1 100755..100644
--- a/indra/llmessage/llcurl.h
+++ b/indra/llmessage/llcurl.h
@@ -42,8 +42,11 @@
 #include "lliopipe.h"
 #include "llsd.h"
 #include "llthread.h"
+#include "llqueuedthread.h"
+#include "llframetimer.h"
 
 class LLMutex;
+class LLCurlThread;
 
 // For whatever reason, this is not typedef'd in curl.h
 typedef size_t (*curl_header_callback)(void *ptr, size_t size, size_t nmemb, void *stream);
@@ -56,8 +59,6 @@ public:
 	class Easy;
 	class Multi;
 
-	static bool sMultiThreaded;
-
 	struct TransferInfo
 	{
 		TransferInfo() : mSizeDownload(0.0), mTotalTime(0.0), mSpeedDownload(0.0) {}
@@ -162,7 +163,7 @@ public:
 	/**
 	 * @ brief Initialize LLCurl class
 	 */
-	static void initClass(bool multi_threaded = false);
+	static void initClass(F32 curl_reuest_timeout = 120.f, S32 max_number_handles = 256, bool multi_threaded = false);
 
 	/**
 	 * @ brief Cleanup LLCurl class
@@ -181,10 +182,25 @@ public:
 	static void ssl_locking_callback(int mode, int type, const char *file, int line);
 	static unsigned long ssl_thread_id(void);
 
+	static LLCurlThread* getCurlThread() { return sCurlThread ;}
+
+	static CURLM* newMultiHandle() ;
+	static CURLMcode deleteMultiHandle(CURLM* handle) ;
+	static CURL*  newEasyHandle() ;
+	static void   deleteEasyHandle(CURL* handle) ;
+
 private:
 	static std::string sCAPath;
 	static std::string sCAFile;
 	static const unsigned int MAX_REDIRECTS;
+	static LLCurlThread* sCurlThread;
+
+	static LLMutex* sHandleMutexp ;
+	static S32      sTotalHandles ;
+	static S32      sMaxHandles;
+public:
+	static bool     sNotQuitting;
+	static F32      sCurlRequestTimeOut;	
 };
 
 class LLCurl::Easy
@@ -216,7 +232,7 @@ public:
 	U32 report(CURLcode);
 	void getTransferInfo(LLCurl::TransferInfo* info);
 
-	void prepRequest(const std::string& url, const std::vector<std::string>& headers, ResponderPtr, S32 time_out = 0, bool post = false);
+	void prepRequest(const std::string& url, const std::vector<std::string>& headers, LLCurl::ResponderPtr, S32 time_out = 0, bool post = false);
 
 	const char* getErrorBuffer();
 
@@ -247,64 +263,120 @@ private:
 	// Note: char*'s not strings since we pass pointers to curl
 	std::vector<char*>	mStrings;
 
-	ResponderPtr		mResponder;
+	LLCurl::ResponderPtr		mResponder;
 
 	static std::set<CURL*> sFreeHandles;
 	static std::set<CURL*> sActiveHandles;
-	static LLMutex* sHandleMutex;
-	static LLMutex* sMultiMutex;
+	static LLMutex*        sHandleMutexp ;
 };
 
-class LLCurl::Multi : public LLThread
+class LLCurl::Multi
 {
 	LOG_CLASS(Multi);
+
+	friend class LLCurlThread ;
+
+private:
+	~Multi();
+
+	void markDead() ;
+	bool doPerform();
+
 public:
 
 	typedef enum
 	{
-		PERFORM_STATE_READY=0,
-		PERFORM_STATE_PERFORMING=1,
-		PERFORM_STATE_COMPLETED=2
+		STATE_READY=0,
+		STATE_PERFORMING=1,
+		STATE_COMPLETED=2
 	} ePerformState;
 
-	Multi();
-	~Multi();
+	Multi(F32 idle_time_out = 0.f);	
 
-	Easy* allocEasy();
-	bool addEasy(Easy* easy);
+	LLCurl::Easy* allocEasy();
+	bool addEasy(LLCurl::Easy* easy);	
+	void removeEasy(LLCurl::Easy* easy);
 	
-	void removeEasy(Easy* easy);
+	void lock() ;
+	void unlock() ;
 
-	S32 process();
-	void perform();
-	void doPerform();
+	void setState(ePerformState state) ;
+	ePerformState getState() ;
 	
-	virtual void run();
+	bool isCompleted() ;
+	bool isValid() {return mCurlMultiHandle != NULL ;}
+	bool isDead() {return mDead;}
+
+	bool waitToComplete() ;
 
+	S32 process();
+	
 	CURLMsg* info_read(S32* msgs_in_queue);
 
 	S32 mQueued;
 	S32 mErrorCount;
 	
-	S32 mPerformState;
-
-	LLCondition* mSignal;
-	bool mQuitting;
-	bool mThreaded;
-
 private:
-	void easyFree(Easy*);
+	void easyFree(LLCurl::Easy*);
+	void cleanup() ;
 	
 	CURLM* mCurlMultiHandle;
 
-	typedef std::set<Easy*> easy_active_list_t;
+	typedef std::set<LLCurl::Easy*> easy_active_list_t;
 	easy_active_list_t mEasyActiveList;
-	typedef std::map<CURL*, Easy*> easy_active_map_t;
+	typedef std::map<CURL*, LLCurl::Easy*> easy_active_map_t;
 	easy_active_map_t mEasyActiveMap;
-	typedef std::set<Easy*> easy_free_list_t;
+	typedef std::set<LLCurl::Easy*> easy_free_list_t;
 	easy_free_list_t mEasyFreeList;
+
+	LLQueuedThread::handle_t mHandle ;
+	ePerformState mState;
+
+	BOOL mDead ;
+	LLMutex* mMutexp ;
+	LLMutex* mDeletionMutexp ;
+	LLMutex* mEasyMutexp ;
+	LLFrameTimer mIdleTimer ;
+	F32 mIdleTimeOut;
 };
 
+class LLCurlThread : public LLQueuedThread
+{
+public:
+
+	class CurlRequest : public LLQueuedThread::QueuedRequest
+	{
+	protected:
+		virtual ~CurlRequest(); // use deleteRequest()
+		
+	public:
+		CurlRequest(handle_t handle, LLCurl::Multi* multi, LLCurlThread* curl_thread);
+
+		/*virtual*/ bool processRequest();
+		/*virtual*/ void finishRequest(bool completed);
+
+	private:
+		// input
+		LLCurl::Multi* mMulti;
+		LLCurlThread*  mCurlThread;
+	};
+	friend class CurlRequest;
+
+public:
+	LLCurlThread(bool threaded = true) ;
+	virtual ~LLCurlThread() ;
+
+	S32 update(F32 max_time_ms);
+
+	void addMulti(LLCurl::Multi* multi) ;
+	void killMulti(LLCurl::Multi* multi) ;
+
+private:
+	bool doMultiPerform(LLCurl::Multi* multi) ;
+	void deleteMulti(LLCurl::Multi* multi) ;
+	void cleanupMulti(LLCurl::Multi* multi) ;
+} ;
+
 namespace boost
 {
 	void intrusive_ptr_add_ref(LLCurl::Responder* p);
@@ -339,7 +411,6 @@ private:
 	LLCurl::Multi* mActiveMulti;
 	S32 mActiveRequestCount;
 	BOOL mProcessing;
-	U32 mThreadID; // debug
 };
 
 class LLCurlEasyRequest
@@ -357,9 +428,11 @@ public:
 	void slist_append(const char* str);
 	void sendRequest(const std::string& url);
 	void requestComplete();
-	void perform();
 	bool getResult(CURLcode* result, LLCurl::TransferInfo* info = NULL);
 	std::string getErrorString();
+	bool isCompleted() {return mMulti->isCompleted() ;}
+	bool wait() { return mMulti->waitToComplete(); }
+	bool isValid() {return mMulti && mMulti->isValid(); }
 
 	LLCurl::Easy* getEasy() const { return mEasy; }
 
diff --git a/indra/llmessage/llhttpassetstorage.cpp b/indra/llmessage/llhttpassetstorage.cpp
index 2bca517e97..612d765969 100644
--- a/indra/llmessage/llhttpassetstorage.cpp
+++ b/indra/llmessage/llhttpassetstorage.cpp
@@ -232,7 +232,8 @@ LLSD LLHTTPAssetRequest::getFullDetails() const
 void LLHTTPAssetRequest::setupCurlHandle()
 {
 	// *NOTE: Similar code exists in mapserver/llcurlutil.cpp  JC
-	mCurlHandle = curl_easy_init();
+	mCurlHandle = LLCurl::newEasyHandle();
+	llassert_always(mCurlHandle != NULL) ;
 
 	// Apply proxy settings if configured to do so
 	LLProxy::getInstance()->applyProxySettings(mCurlHandle);
@@ -278,7 +279,7 @@ void LLHTTPAssetRequest::setupCurlHandle()
 
 void LLHTTPAssetRequest::cleanupCurlHandle()
 {
-	curl_easy_cleanup(mCurlHandle);
+	LLCurl::deleteEasyHandle(mCurlHandle);
 	if (mAssetStoragep)
 	{
 		// Terminating a request.  Thus upload or download is no longer pending.
@@ -429,12 +430,13 @@ void LLHTTPAssetStorage::_init(const std::string& web_host, const std::string& l
 
 	// curl_global_init moved to LLCurl::initClass()
 	
-	mCurlMultiHandle = curl_multi_init();
+	mCurlMultiHandle = LLCurl::newMultiHandle() ;
+	llassert_always(mCurlMultiHandle != NULL) ;
 }
 
 LLHTTPAssetStorage::~LLHTTPAssetStorage()
 {
-	curl_multi_cleanup(mCurlMultiHandle);
+	LLCurl::deleteMultiHandle(mCurlMultiHandle);
 	mCurlMultiHandle = NULL;
 	
 	// curl_global_cleanup moved to LLCurl::initClass()
diff --git a/indra/llmessage/llhttpclient.cpp b/indra/llmessage/llhttpclient.cpp
index dd4e3a6300..0c325a68aa 100644
--- a/indra/llmessage/llhttpclient.cpp
+++ b/indra/llmessage/llhttpclient.cpp
@@ -158,7 +158,7 @@ namespace
 			if(fstream.is_open())
 			{
 				fstream.seekg(0, std::ios::end);
-				U32 fileSize = fstream.tellg();
+				U32 fileSize = (U32)fstream.tellg();
 				fstream.seekg(0, std::ios::beg);
 				std::vector<char> fileBuffer(fileSize);
 				fstream.read(&fileBuffer[0], fileSize);
@@ -228,6 +228,12 @@ static void request(
 	LLPumpIO::chain_t chain;
 
 	LLURLRequest* req = new LLURLRequest(method, url);
+	if(!req->isValid())//failed
+	{
+		delete req ;
+		return ;
+	}
+
 	req->setSSLVerifyCallback(LLHTTPClient::getCertVerifyCallback(), (void *)req);
 
 	
@@ -423,7 +429,9 @@ static LLSD blocking_request(
 {
 	lldebugs << "blockingRequest of " << url << llendl;
 	char curl_error_buffer[CURL_ERROR_SIZE] = "\0";
-	CURL* curlp = curl_easy_init();
+	CURL* curlp = LLCurl::newEasyHandle();
+	llassert_always(curlp != NULL) ;
+
 	LLHTTPBuffer http_buffer;
 	std::string body_str;
 	
@@ -517,7 +525,7 @@ static LLSD blocking_request(
 	}
 
 	// * Cleanup
-	curl_easy_cleanup(curlp);
+	LLCurl::deleteEasyHandle(curlp);
 	return response;
 }
 
diff --git a/indra/llmessage/lliohttpserver.cpp b/indra/llmessage/lliohttpserver.cpp
index 73e8a69085..987f386aa3 100644
--- a/indra/llmessage/lliohttpserver.cpp
+++ b/indra/llmessage/lliohttpserver.cpp
@@ -818,6 +818,8 @@ LLIOPipe::EStatus LLHTTPResponder::process_impl(
 
   			// Copy everything after mLast read to the out.
 			LLBufferArray::segment_iterator_t seg_iter;
+
+			buffer->lock();
 			seg_iter = buffer->splitAfter(mLastRead);
 			if(seg_iter != buffer->endSegment())
 			{
@@ -838,7 +840,7 @@ LLIOPipe::EStatus LLHTTPResponder::process_impl(
 				}
 #endif
 			}
-
+			buffer->unlock();
 			//
 			// *FIX: get rid of extra bytes off the end
 			//
diff --git a/indra/llmessage/lliopipe.cpp b/indra/llmessage/lliopipe.cpp
index 6e4eec74a6..8f827f7a30 100644
--- a/indra/llmessage/lliopipe.cpp
+++ b/indra/llmessage/lliopipe.cpp
@@ -75,6 +75,12 @@ LLIOPipe::~LLIOPipe()
 	//lldebugs << "destroying LLIOPipe" << llendl;
 }
 
+//virtual 
+bool LLIOPipe::isValid() 
+{
+	return true ;
+}
+
 // static
 std::string LLIOPipe::lookupStatusString(EStatus status)
 {
diff --git a/indra/llmessage/lliopipe.h b/indra/llmessage/lliopipe.h
index 8e656b6da1..cbd17b5a3d 100644
--- a/indra/llmessage/lliopipe.h
+++ b/indra/llmessage/lliopipe.h
@@ -231,6 +231,8 @@ public:
 	 */
 	virtual ~LLIOPipe();
 
+	virtual bool isValid() ;
+
 protected:
 	/**
 	 * @brief Base Constructor.
diff --git a/indra/llmessage/lliosocket.cpp b/indra/llmessage/lliosocket.cpp
index 54ceab3422..d5b4d45821 100644
--- a/indra/llmessage/lliosocket.cpp
+++ b/indra/llmessage/lliosocket.cpp
@@ -445,6 +445,7 @@ LLIOPipe::EStatus LLIOSocketWriter::process_impl(
 	// efficient - not only because writev() is better, but also
 	// because we won't have to do as much work to find the start
 	// address.
+	buffer->lock();
 	LLBufferArray::segment_iterator_t it;
 	LLBufferArray::segment_iterator_t end = buffer->endSegment();
 	LLSegment segment;
@@ -524,6 +525,8 @@ LLIOPipe::EStatus LLIOSocketWriter::process_impl(
 		}
 
 	}
+	buffer->unlock();
+
 	PUMP_DEBUG;
 	if(done && eos)
 	{
diff --git a/indra/llmessage/llmime.cpp b/indra/llmessage/llmime.cpp
index 943a734927..9d9c4ebd68 100644
--- a/indra/llmessage/llmime.cpp
+++ b/indra/llmessage/llmime.cpp
@@ -388,7 +388,7 @@ bool LLMimeParser::Impl::parseHeaders(
 		// not to read past limit when we get() the newline.
 		S32 max_get = llmin((S32)LINE_BUFFER_LENGTH, limit - mScanCount - 1);
 		istr.getline(mBuffer, max_get, '\r');
-		mScanCount += istr.gcount();
+		mScanCount += (S32)istr.gcount();
 		int c = istr.get();
 		if(EOF == c)
 		{
@@ -496,7 +496,7 @@ void LLMimeParser::Impl::scanPastSeparator(
 		// past limit when we get() the newline.
 		S32 max_get = llmin((S32)LINE_BUFFER_LENGTH, limit - mScanCount - 1);
 		istr.getline(mBuffer, max_get, '\r');
-		mScanCount += istr.gcount();
+		mScanCount += (S32)istr.gcount();
 		if(istr.gcount() >= LINE_BUFFER_LENGTH - 1)
 		{
 			// that's way too long to be a separator, so ignore it.
diff --git a/indra/llmessage/llpumpio.cpp b/indra/llmessage/llpumpio.cpp
index a8d2a0a224..f3ef4f2684 100644
--- a/indra/llmessage/llpumpio.cpp
+++ b/indra/llmessage/llpumpio.cpp
@@ -195,7 +195,7 @@ bool LLPumpIO::prime(apr_pool_t* pool)
 	return ((pool == NULL) ? false : true);
 }
 
-bool LLPumpIO::addChain(const chain_t& chain, F32 timeout)
+bool LLPumpIO::addChain(const chain_t& chain, F32 timeout, bool has_curl_request)
 {
 	LLMemType m1(LLMemType::MTYPE_IO_PUMP);
 	if(chain.empty()) return false;
@@ -204,8 +204,10 @@ bool LLPumpIO::addChain(const chain_t& chain, F32 timeout)
 	LLScopedLock lock(mChainsMutex);
 #endif
 	LLChainInfo info;
+	info.mHasCurlRequest = has_curl_request;
 	info.setTimeoutSeconds(timeout);
 	info.mData = LLIOPipe::buffer_ptr_t(new LLBufferArray);
+	info.mData->setThreaded(has_curl_request);
 	LLLinkInfo link;
 #if LL_DEBUG_PIPE_TYPE_IN_PUMP
 	lldebugs << "LLPumpIO::addChain() " << chain[0] << " '"
@@ -440,6 +442,15 @@ void LLPumpIO::pump()
 
 static LLFastTimer::DeclareTimer FTM_PUMP_IO("Pump IO");
 
+LLPumpIO::current_chain_t LLPumpIO::removeRunningChain(LLPumpIO::current_chain_t& run_chain) 
+{
+	std::for_each(
+				(*run_chain).mDescriptors.begin(),
+				(*run_chain).mDescriptors.end(),
+				ll_delete_apr_pollset_fd_client_data());
+	return mRunningChains.erase(run_chain);
+}
+
 //timeout is in microseconds
 void LLPumpIO::pump(const S32& poll_timeout)
 {
@@ -585,10 +596,16 @@ void LLPumpIO::pump(const S32& poll_timeout)
 //						<< (*run_chain).mChainLinks[0].mPipe
 //						<< " because we reached the end." << llendl;
 #endif
-				run_chain = mRunningChains.erase(run_chain);
+				run_chain = removeRunningChain(run_chain);
 				continue;
 			}
 		}
+		else if(isChainExpired(*run_chain))
+		{
+			run_chain = removeRunningChain(run_chain);
+			continue;
+		}
+
 		PUMP_DEBUG;
 		if((*run_chain).mLock)
 		{
@@ -696,11 +713,7 @@ void LLPumpIO::pump(const S32& poll_timeout)
 			PUMP_DEBUG;
 			// This chain is done. Clean up any allocated memory and
 			// erase the chain info.
-			std::for_each(
-				(*run_chain).mDescriptors.begin(),
-				(*run_chain).mDescriptors.end(),
-				ll_delete_apr_pollset_fd_client_data());
-			run_chain = mRunningChains.erase(run_chain);
+			run_chain = removeRunningChain(run_chain);
 
 			// *NOTE: may not always need to rebuild the pollset.
 			mRebuildPollset = true;
@@ -1095,6 +1108,24 @@ void LLPumpIO::processChain(LLChainInfo& chain)
 	PUMP_DEBUG;
 }
 
+bool LLPumpIO::isChainExpired(LLChainInfo& chain)
+{
+	if(!chain.mHasCurlRequest)
+	{
+		return false ;
+	}
+
+	for(links_t::iterator iter = chain.mChainLinks.begin(); iter != chain.mChainLinks.end(); ++iter)
+	{
+		if(!(*iter).mPipe->isValid())
+		{
+			return true ;
+		}
+	}
+
+	return false ;
+}
+
 bool LLPumpIO::handleChainError(
 	LLChainInfo& chain,
 	LLIOPipe::EStatus error)
@@ -1136,6 +1167,9 @@ bool LLPumpIO::handleChainError(
 #endif
 			keep_going = false;
 			break;
+		case LLIOPipe::STATUS_EXPIRED:
+			keep_going = false;
+			break ;
 		default:
 			if(LLIOPipe::isSuccess(error))
 			{
@@ -1157,7 +1191,8 @@ bool LLPumpIO::handleChainError(
 LLPumpIO::LLChainInfo::LLChainInfo() :
 	mInit(false),
 	mLock(0),
-	mEOS(false)
+	mEOS(false),
+	mHasCurlRequest(false)
 {
 	LLMemType m1(LLMemType::MTYPE_IO_PUMP);
 	mTimer.setTimerExpirySec(DEFAULT_CHAIN_EXPIRY_SECS);
diff --git a/indra/llmessage/llpumpio.h b/indra/llmessage/llpumpio.h
index 9303c9d7fc..d2c5d37571 100644
--- a/indra/llmessage/llpumpio.h
+++ b/indra/llmessage/llpumpio.h
@@ -111,9 +111,10 @@ public:
 	 * @param chain The pipes for the chain
 	 * @param timeout The number of seconds in the future to
 	 * expire. Pass in 0.0f to never expire.
+	 * @param has_curl_request The chain contains LLURLRequest if true.
 	 * @return Returns true if anything was added to the pump.
 	 */
-	bool addChain(const chain_t& chain, F32 timeout);
+	bool addChain(const chain_t& chain, F32 timeout, bool has_curl_request = false);
 	
 	/** 
 	 * @brief Struct to associate a pipe with it's buffer io indexes.
@@ -356,12 +357,13 @@ protected:
 
 		// basic member data
 		bool mInit;
+		bool mEOS;
+		bool mHasCurlRequest;
 		S32 mLock;
 		LLFrameTimer mTimer;
 		links_t::iterator mHead;
 		links_t mChainLinks;
-		LLIOPipe::buffer_ptr_t mData;
-		bool mEOS;
+		LLIOPipe::buffer_ptr_t mData;		
 		LLSD mContext;
 
 		// tracking inside the pump
@@ -402,7 +404,7 @@ protected:
 protected:
 	void initialize(apr_pool_t* pool);
 	void cleanup();
-
+	current_chain_t removeRunningChain(current_chain_t& chain) ;
 	/** 
 	 * @brief Given the internal state of the chains, rebuild the pollset
 	 * @see setConditional()
@@ -429,6 +431,9 @@ protected:
 	 */
 	bool handleChainError(LLChainInfo& chain, LLIOPipe::EStatus error);
 
+	//if the chain is expired, remove it
+	bool isChainExpired(LLChainInfo& chain) ;
+
 public:
 	/** 
 	 * @brief Return number of running chains.
diff --git a/indra/llmessage/llsdmessage.cpp b/indra/llmessage/llsdmessage.cpp
index 9148c9dd15..1c93c12d99 100644
--- a/indra/llmessage/llsdmessage.cpp
+++ b/indra/llmessage/llsdmessage.cpp
@@ -88,7 +88,7 @@ bool LLSDMessage::httpListener(const LLSD& request)
                                                        request,
                                                        url, "POST", reply, error),
                        LLSD(),      // headers
-                       timeout);
+                       (F32)timeout);
     return false;
 }
 
diff --git a/indra/llmessage/llsdmessagebuilder.cpp b/indra/llmessage/llsdmessagebuilder.cpp
index 2698a271ee..615221e0ad 100644
--- a/indra/llmessage/llsdmessagebuilder.cpp
+++ b/indra/llmessage/llsdmessagebuilder.cpp
@@ -317,7 +317,7 @@ void LLSDMessageBuilder::copyFromMessageData(const LLMsgData& data)
 
 			// S64 not supported in LLSD so we just truncate it
 			case MVT_S64:
-				addS32(varname, *(S64*)mvci.getData());
+				addS32(varname, (S32)*(S64*)mvci.getData());
 				break;
 
 			case MVT_F32:
diff --git a/indra/llmessage/llsdmessagereader.cpp b/indra/llmessage/llsdmessagereader.cpp
index 304a692cdf..3d8ca2ad9f 100644
--- a/indra/llmessage/llsdmessagereader.cpp
+++ b/indra/llmessage/llsdmessagereader.cpp
@@ -291,9 +291,10 @@ S32 getElementSize(const LLSD& llsd)
 	case LLSD::TypeMap:
 	case LLSD::TypeArray:
 	case LLSD::TypeUndefined:
+	default:                        // TypeLLSDTypeEnd, TypeLLSDNumTypes, etc.
 		return 0;
 	}
-	return 0;
+	//return 0;
 }
 
 //virtual 
diff --git a/indra/llmessage/llsdrpcclient.h b/indra/llmessage/llsdrpcclient.h
index 9fb49a5c33..0cecf4f688 100644
--- a/indra/llmessage/llsdrpcclient.h
+++ b/indra/llmessage/llsdrpcclient.h
@@ -240,9 +240,16 @@ public:
 	virtual bool build(LLPumpIO::chain_t& chain, LLSD context) const
 	{
 		lldebugs << "LLSDRPCClientFactory::build" << llendl;
-		LLIOPipe::ptr_t service(new Client);
-		chain.push_back(service);
 		LLURLRequest* http(new LLURLRequest(LLURLRequest::HTTP_POST));
+		if(!http->isValid())
+		{
+			llwarns << "Creating LLURLRequest failed." << llendl ;
+			delete http;
+			return false;
+		}
+
+		LLIOPipe::ptr_t service(new Client);
+		chain.push_back(service);		
 		LLIOPipe::ptr_t http_pipe(http);
 		http->addHeader("Content-Type: text/llsd");
 		if(mURL.empty())
@@ -283,9 +290,16 @@ public:
 	virtual bool build(LLPumpIO::chain_t& chain, LLSD context) const
 	{
 		lldebugs << "LLXMLSDRPCClientFactory::build" << llendl;
-		LLIOPipe::ptr_t service(new Client);
-		chain.push_back(service);
+
 		LLURLRequest* http(new LLURLRequest(LLURLRequest::HTTP_POST));
+		if(!http->isValid())
+		{
+			llwarns << "Creating LLURLRequest failed." << llendl ;
+			delete http;
+			return false ;
+		}
+		LLIOPipe::ptr_t service(new Client);
+		chain.push_back(service);		
 		LLIOPipe::ptr_t http_pipe(http);
 		http->addHeader("Content-Type: text/xml");
 		if(mURL.empty())
diff --git a/indra/llmessage/llurlrequest.cpp b/indra/llmessage/llurlrequest.cpp
index fa03bb7512..a16f5c7bf0 100644
--- a/indra/llmessage/llurlrequest.cpp
+++ b/indra/llmessage/llurlrequest.cpp
@@ -64,7 +64,7 @@ public:
 	~LLURLRequestDetail();
 	std::string mURL;
 	LLCurlEasyRequest* mCurlRequest;
-	LLBufferArray* mResponseBuffer;
+	LLIOPipe::buffer_ptr_t mResponseBuffer;
 	LLChannelDescriptors mChannels;
 	U8* mLastRead;
 	U32 mBodyLimit;
@@ -75,7 +75,6 @@ public:
 
 LLURLRequestDetail::LLURLRequestDetail() :
 	mCurlRequest(NULL),
-	mResponseBuffer(NULL),
 	mLastRead(NULL),
 	mBodyLimit(0),
 	mByteAccumulator(0),
@@ -84,13 +83,18 @@ LLURLRequestDetail::LLURLRequestDetail() :
 {
 	LLMemType m1(LLMemType::MTYPE_IO_URL_REQUEST);
 	mCurlRequest = new LLCurlEasyRequest();
+	
+	if(!mCurlRequest->isValid()) //failed.
+	{
+		delete mCurlRequest ;
+		mCurlRequest = NULL ;
+	}
 }
 
 LLURLRequestDetail::~LLURLRequestDetail()
 {
 	LLMemType m1(LLMemType::MTYPE_IO_URL_REQUEST);
 	delete mCurlRequest;
-	mResponseBuffer = NULL;
 	mLastRead = NULL;
 }
 
@@ -170,6 +174,7 @@ LLURLRequest::~LLURLRequest()
 {
 	LLMemType m1(LLMemType::MTYPE_IO_URL_REQUEST);
 	delete mDetail;
+	mDetail = NULL ;
 }
 
 void LLURLRequest::setURL(const std::string& url)
@@ -251,12 +256,24 @@ void LLURLRequest::allowCookies()
 	mDetail->mCurlRequest->setoptString(CURLOPT_COOKIEFILE, "");
 }
 
+//virtual 
+bool LLURLRequest::isValid() 
+{
+	return mDetail->mCurlRequest && mDetail->mCurlRequest->isValid(); 
+}
+
 // virtual
 LLIOPipe::EStatus LLURLRequest::handleError(
 	LLIOPipe::EStatus status,
 	LLPumpIO* pump)
 {
 	LLMemType m1(LLMemType::MTYPE_IO_URL_REQUEST);
+	
+	if(!isValid())
+	{
+		return STATUS_EXPIRED ;
+	}
+
 	if(mCompletionCallback && pump)
 	{
 		LLURLRequestComplete* complete = NULL;
@@ -325,7 +342,7 @@ LLIOPipe::EStatus LLURLRequest::process_impl(
 
 		// *FIX: bit of a hack, but it should work. The configure and
 		// callback method expect this information to be ready.
-		mDetail->mResponseBuffer = buffer.get();
+		mDetail->mResponseBuffer = buffer;
 		mDetail->mChannels = channels;
 		if(!configure())
 		{
@@ -344,7 +361,10 @@ LLIOPipe::EStatus LLURLRequest::process_impl(
 		static LLFastTimer::DeclareTimer FTM_URL_PERFORM("Perform");
 		{
 			LLFastTimer t(FTM_URL_PERFORM);
-			mDetail->mCurlRequest->perform();
+			if(!mDetail->mCurlRequest->wait())
+			{
+				return status ;
+			}
 		}
 
 		while(1)
@@ -439,6 +459,12 @@ void LLURLRequest::initialize()
 	LLMemType m1(LLMemType::MTYPE_IO_URL_REQUEST);
 	mState = STATE_INITIALIZED;
 	mDetail = new LLURLRequestDetail;
+
+	if(!isValid())
+	{
+		return ;
+	}
+
 	mDetail->mCurlRequest->setopt(CURLOPT_NOSIGNAL, 1);
 	mDetail->mCurlRequest->setWriteCallback(&downCallback, (void*)this);
 	mDetail->mCurlRequest->setReadCallback(&upCallback, (void*)this);
diff --git a/indra/llmessage/llurlrequest.h b/indra/llmessage/llurlrequest.h
index ec5c2c1941..44d358d906 100644
--- a/indra/llmessage/llurlrequest.h
+++ b/indra/llmessage/llurlrequest.h
@@ -188,6 +188,8 @@ public:
 	 */
 	void allowCookies();
 
+	/*virtual*/ bool isValid() ;
+
 public:
 	/** 
 	 * @brief Give this pipe a chance to handle a generated error
diff --git a/indra/llmessage/llxfer.h b/indra/llmessage/llxfer.h
index 989e8b2cab..f9348eb11f 100644
--- a/indra/llmessage/llxfer.h
+++ b/indra/llmessage/llxfer.h
@@ -29,6 +29,7 @@
 
 #include "message.h"
 #include "lltimer.h"
+#include "llextendedstatus.h"
 
 const S32 LL_XFER_LARGE_PAYLOAD = 7680;
 
diff --git a/indra/llmessage/message.cpp b/indra/llmessage/message.cpp
index d0b0e178b8..6a425cfe98 100644
--- a/indra/llmessage/message.cpp
+++ b/indra/llmessage/message.cpp
@@ -3147,7 +3147,7 @@ bool LLMessageSystem::generateDigestForWindowAndUUIDs(char* digest, const S32 wi
 		LL_ERRS("Messaging") << "Trying to generate complex digest on a machine without a shared secret!" << llendl;
 	}
 
-	U32 now = time(NULL);
+	U32 now = (U32)time(NULL);
 
 	now /= window;
 
@@ -3167,7 +3167,7 @@ bool LLMessageSystem::isMatchingDigestForWindowAndUUIDs(const char* digest, cons
 	}
 	
 	char our_digest[MD5HEX_STR_SIZE];	/* Flawfinder: ignore */
-	U32 now = time(NULL);
+	U32 now = (U32)time(NULL);
 
 	now /= window;
 
@@ -3213,7 +3213,7 @@ bool LLMessageSystem::generateDigestForWindow(char* digest, const S32 window) co
 		LL_ERRS("Messaging") << "Trying to generate simple digest on a machine without a shared secret!" << llendl;
 	}
 
-	U32 now = time(NULL);
+	U32 now = (U32)time(NULL);
 
 	now /= window;
 
diff --git a/indra/llmessage/tests/testrunner.py b/indra/llmessage/tests/testrunner.py
index f2c841532a..5b9beb359b 100644
--- a/indra/llmessage/tests/testrunner.py
+++ b/indra/llmessage/tests/testrunner.py
@@ -35,7 +35,7 @@ import re
 import errno
 import socket
 
-VERBOSE = os.environ.get("INTEGRATION_TEST_VERBOSE", "1") # default to verbose
+VERBOSE = os.environ.get("INTEGRATION_TEST_VERBOSE", "0") # default to quiet
 # Support usage such as INTEGRATION_TEST_VERBOSE=off -- distressing to user if
 # that construct actually turns on verbosity...
 VERBOSE = not re.match(r"(0|off|false|quiet)$", VERBOSE, re.IGNORECASE)