Microsoft KB Archive/243767

= UDP Problems When Connected Through a Proxy with the Winsock Proxy Client =

Article ID: 243767

Article Last Modified on 12/3/1999

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APPLIES TO


 * Microsoft Windows Media Services 4.0

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This article was previously published under Q243767



SYMPTOMS
Windows Media Player clients are sometimes unable to complete User Datagram Protocol (UDP) packet pair measurements when connected using the Microsoft WinSock Proxy Client over modem or Ethernet connections to servers on the Internet. Packet pairs fail, but the client is able to stream the UDP unicast stream with very few lost packets. Netmon analysis shows that the client only receives one packet of the packet pair.

This behavior occurs on both Windows 2000 and Windows NT 4.0.



CAUSE
This is a known issue with UDP packet pairs and Microsoft Proxy Server version 2.0.



WORKAROUND
Instead of using UDP to stream content with the mmsu:// protocol, use Transfer Control Protocol (TCP) with the mmst:// protocol. Note that this may affect performance of the server, and clients may experience more buffering of streamed content than normal.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Windows Media Services version 4.0.

Additional query words: netshow

Keywords: kbbug kbpending KB243767

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