Channeloption.ip-tos-bit not set properly in syn/ack packet in the tcp handshake

[mallikarjun kohalli]

Hi All,

I have set the iptos bit to the right value during the netty server initialisation. But when I capture the packets and check, I see that the SYN/ACK packet goes with the default IPTOS value whereas the following data packets go with the right value that I have set. Is there an api in netty to set the iptos bit before the channel bind call so that the syn/ack packet goes with the right iptos value or am i missing something ?

[Norman Maurer]

I already replied to this on stack overflow:

https://stackoverflow.com/questions/64428948/channeloption-ip-tos-bit-not-set-properly-in-syn-ack-packet-in-the-tcp-handshake

On 21. Oct 2020, at 10:15, mallikarjun kohalli <mallikarj...@gmail.com> wrote:

Hi All,

I have set the iptos bit to the right value during the netty server initialisation. But when I capture the packets and check, I see that the SYN/ACK packet goes with the default IPTOS value whereas the following data packets go with the right value that I have set. Is there an api in netty to set the iptos bit before the channel bind call so that the syn/ack packet goes with the right iptos value or am i missing something ?

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