etr/libhttpserver

[BUG] TCP_FASTOPEN fails to be enabled on supported kernels such as 6.1 and 6.6.

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BeardOverflow commented

Description

TCP_FASTOPEN fails to be enabled on supported kernels such as 6.1 and 6.6.

Steps to Reproduce

  1. Check your current kernel
    a) Use a real kernel such as 6.1 or 6.6
    b) Or fake the installed kernel version in your system:

    1. Backup your /bin/uname (revert it at the end): mv /bin/uname /bin/uname.bak
    2. Create a fake /bin/uname binary with the following content:
    #!/bin/bash

case "$1" in
  -m) echo "x86_64";;
  -r) echo "6.1.0-amd64";;
  -s) echo "Linux";;
  -v) echo "#1 SMP PREEMPT_DYNAMIC";;
  *) echo "Linux";;
esac
    1. Make sure the new /bin/uname has execution permissions: chmod +x /bin/uname

  2. Follow the building steps in the README.md to configure the project:

./bootstrap
mkdir build
cd build
../configure

Expected behavior:
TCP_FASTOPEN to yes

Actual behavior:
TCP_FASTOPEN to no

configure: Configuration Summary:
  Operating System:  linux-gnu
  Target directory:  /usr/local
  License         :  LGPL only
  Debug           :  no
  TLS Enabled     :  yes
  TCP_FASTOPEN    :  no
  Static          :  yes
  Build examples  :  yes

Reproduces how often: Always

Versions

Additional Information

None