_  _    __    ___  __    ___  _____  _  _
 ( \( )  /__\  / __)(  )  / __)(  _  )( \( )
  )  (  /(__)\( (__  )(__( (__  )(_)(  )  (
 (_)\_)(__)(__)\___)(____)\___)(_____)(_)\_)

The History of Hacking  ·  May 31 – June 2, 2026  ·  Carolina Beach, NC

Connect from your terminal: telnet naclconbbs.net 23  |  ssh naclconbbs.net -p 2222

  1. Forum
  2. DOVE-Net
  3. Synchronet Programming

  • src/syncterm/CHANGES conn.c ssh.c

    From Deucе@VERT to Git commit to main/sbbs/master on Wed May 20 16:41:25 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/05048761b284b8a78a93decd
    Modified Files:
    src/syncterm/CHANGES conn.c ssh.c
    Log Message:
    syncterm: pin SO_SNDBUF/SO_RCVBUF to 1 MiB on all TCP connections

    ssh.c set SO_SNDBUF=1 MiB after connect but left SO_RCVBUF at the
    kernel default, and the other TCP transports (telnet, telnets, rlogin,
    raw) inherited Windows' ~8 KiB defaults for both directions. A telnet
    download on Windows therefore capped at roughly RCVBUF/RTT — about
    400 KiB/s on a 20 ms link — regardless of how fast the server streamed.

    Lift the buffer setup into conn_socket_connect() so every TCP transport
    gets a 1 MiB baseline in both directions. ssh_set_sftp_buffer_mode()
    still dynamically drops SO_SNDBUF to 64 KiB during SFTP activity so
    keystrokes don't queue behind bulk data; the connect-time 1 MiB is the
    value it restores to.

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