Change streams to be asynchronous

Major restructuring of how streams work. Neither input nor output
streams are now blocking. This avoids stalling the rest of the client or
server when a peer is slow or unresponsive.

Note that this puts an extra burden on users of streams to make sure
they are allowed to do their work once the underlying transports are
ready (e.g. monitoring fds).

1 files changed, 2 insertions, 2 deletions

diff --git a/common/rfb/CMsgHandler.h b/common/rfb/CMsgHandler.h
index 84dd115c..5b14806a 100644
--- a/common/rfb/CMsgHandler.h
+++ b/common/rfb/CMsgHandler.h
@@ -61,12 +61,12 @@ namespace rfb {
                             const PixelFormat& pf,
                             const char* name) = 0;
 
-    virtual void readAndDecodeRect(const Rect& r, int encoding,
+    virtual bool readAndDecodeRect(const Rect& r, int encoding,
                                    ModifiablePixelBuffer* pb) = 0;
 
     virtual void framebufferUpdateStart();
     virtual void framebufferUpdateEnd();
-    virtual void dataRect(const Rect& r, int encoding) = 0;
+    virtual bool dataRect(const Rect& r, int encoding) = 0;
 
     virtual void setColourMapEntries(int firstColour, int nColours,
 				     rdr::U16* rgbs) = 0;