Fix crash in the Linux unittest in the HTTP client code, in Socket::readBytes. Cobra Metrics Publisher code returns the message id of the message that got published, to be used to validated that it got sent properly when receiving an ack.

ixwebsocket/IXSocket.cpp

@@ -367,17 +367,16 @@ namespace ix
             size_t size = std::min(kChunkSize, length - output.size());
             ssize_t ret = recv((char*)&_readBuffer[0], size);
 
-            if (ret <= 0 && !Socket::isWaitNeeded())
-            {
-                // Error
-                return std::make_pair(false, std::string());
-            }
-            else
+            if (ret > 0)
             {
                 output.insert(output.end(),
                               _readBuffer.begin(),
                               _readBuffer.begin() + ret);
             }
+            else if (ret <= 0 && !Socket::isWaitNeeded())
+            {
+                return std::make_pair(false, std::string());
+            }
 
             if (onProgressCallback) onProgressCallback((int) output.size(), (int) length);
 

ixwebsocket/IXWebSocketVersion.h

@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "6.2.2"
+#define IX_WEBSOCKET_VERSION "6.2.3"