Fix deadlock waiting for read or write on closed connection.

If the system is suspended then it may not realise that a TCP connection has
been closed, while waiting for data to arrive on it. We didn't used to apply
a timeout to this read operation. Now we use the connection's default timeout
on all read and write operations. Network operations that don't pass a timeout
will be logged with a backtrace, so that they can be fixed.

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/common/SelfFlushingStream.h b/lib/common/SelfFlushingStream.h
index 6865ab96..b4efa294 100644
--- a/lib/common/SelfFlushingStream.h
+++ b/lib/common/SelfFlushingStream.h
@@ -56,9 +56,10 @@ public:
 	{
 		return mrSource.BytesLeftToRead();
 	}
-	virtual void Write(const void *pBuffer, int NBytes)
+	virtual void Write(const void *pBuffer, int NBytes,
+		int Timeout = IOStream::TimeOutInfinite)
 	{
-		mrSource.Write(pBuffer, NBytes);
+		mrSource.Write(pBuffer, NBytes, Timeout);
 	}
 	virtual bool StreamDataLeft()
 	{