when app sends large message to their backend, network inspect agent sends the message to RWI which results in the busy loop blocking webkit main thread.Because it takes a while to read and transmit the message.

Author: kkanag314

Source/WTF/wtf/glib/SocketConnection.cpp

@@ -124,8 +124,10 @@ bool SocketConnection::readMessage()
     memcpy(&flags, messageData, sizeof(MessageFlags));
     messageData += sizeof(MessageFlags);
     auto messageSize = sizeof(uint32_t) + sizeof(MessageFlags) + bodySize;
-    if (m_readBuffer.size() < messageSize)
+    if (m_readBuffer.size() < messageSize) {
+        m_readBuffer.reserveCapacity(messageSize);
         return false;
+    }
 
     Checked<size_t> messageNameLength = strlen(messageData);
     messageNameLength++;