Forum Discussion

Mohit_Rathee's avatar
Mohit_Rathee
Icon for Nimbostratus rankNimbostratus
Jul 07, 2019

HTTP Post across Mutiple TCP Segment

When attempting to send HTTP post request across multiple TCP segments the request fails. We receive a response that HTTP Body is missing from the server. . But if i send the same HTTP post reques...
devops
HTTP_POST
iRules
LTM
Segmentation
tcp
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Jul 09, 2019

 Mohit is explaining that when using activesync, if you send an email larger than TCP MSS (1460 bytes), the HTTP POST data is segmented in multiple TCP packets (TCP segment as explained above). the first contains HTTP headers, following packets only content DATA.

 

Such packet is supported by F5 if data length across several packets matches "content-length" http header.

 

I never got issues with such deployments with http profile enabled.

  • Dario_Garrido's avatar
    Dario_Garrido
    Icon for MVP rankMVP
    Jul 09, 2019

    Ok, I understand what you mean.

    ​

    Actually, I suspect that Mohit is facing a bug with the http profile, because I had a similar issue before. The last ideas are to try to workaround it.

    ​

    Also, another idea would be to configure "rechunk" option in the request chunking section.

    https://support.f5.com/csp/article/K40243113

    ​

    KR,

    Dario.