ERROR 411 , chunked transfer encoding

Posted on 2005-04-28
Last Modified: 2012-08-13
 hey everyone,
  I am trying to post an audio file from a CISCO Voice Gateway to Apache Server using VXML.I am getting a http 411 error.
  I know that While doing the POST, the gateway uses Chunk Transfer Encoding ( Not really clear on what it means)
  Could my web server not being able to handle chunk transfer Encoding be a reason for http 411 ( content lenght reqd)?
 I am trying to find out why my POST is not working, If it is what I am thinking problem can be solved .......just want to make sure........i am thinking in the right direction..........Would appreciate some explaination about this.

Question by:blinker82

    Author Comment

    how do I enable chunk transfer Encoding in Apache Server?
    LVL 53

    Expert Comment


    I have moved this to the Routers topic whre I think you will have a better chance of getting a solution.

    Page Editor, Web Development

    Author Comment

    hulo anybody there
    LVL 79

    Assisted Solution

    Best I can do is provide this link to Cisco's VoiceXML Programmer's Guide.

    I've also seen some Apache bug reports regarding Apache not handling the chunked encoding correctly...
    LVL 20

    Accepted Solution

    I don't see how this became a Routers problem or an Apache problem.

    Chunked encoding has to be supported by the action that is invoked when you POST to it. Older-style CGI apps may not support Chunked and will fail if a content size is not included in the HTTP header. They depend on that header to know how much to read from their input socket. Chunked is an alternative, but if the app doesn't support it ....
    LVL 6

    Expert Comment


    I am working on the phisical / mac layers on hardware for years,

    maybe the "chunk" overflow the MRU (max recieved unit = 1522 bytes)
    check for the "frame_size_limit" in your system.

    another option, maybe the "chunk" packets are dropped because of bad CRC at the end of the packets

    Author Comment

    please refer to the question :-

    Apache 2.0.54, Enabling Chunk transfer Encoding

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