WebInputStream: Fixed bug preventing cancellation of streams on Linux

modules/juce_core/native/juce_linux_Network.cpp

@@ -47,7 +47,7 @@ void MACAddress::findAllAddresses (Array<MACAddress>& result)
             freeifaddrs (addrs);
         }
 
-        close (s);
+        ::close (s);
     }
 }
 
@@ -130,7 +130,7 @@ public:
         closeSocket();
     }
 
-    //==============================================================================w
+    //==============================================================================
     bool isError() const                 { return socketHandle < 0; }
     bool isExhausted()                   { return finished; }
     int64 getPosition()                  { return position; }
@@ -253,13 +253,20 @@ private:
     String httpRequestCmd;
     int64 chunkEnd = 0;
     bool isChunked = false, readingChunk = false;
+    CriticalSection closeSocketLock;
 
     void closeSocket (bool resetLevelsOfRedirection = true)
     {
+        const ScopedLock lock (closeSocketLock);
+
         if (socketHandle >= 0)
-            close (socketHandle);
+        {
+            ::shutdown (socketHandle, SHUT_RDWR);
+            ::close (socketHandle);
+        }
 
         socketHandle = -1;
+
         if (resetLevelsOfRedirection)
             levelsOfRedirection = 0;
     }