tsctp(1)

💖 tsctp — SCTP Test Tool 💖

okay bestie, so this is tsctp(1), a General Commands Manual page, and we're about to get SO into it. it's an SCTP test tool, it's giving network-nerd main character energy, and honestly? obsessed. 🦋

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✨ SYNOPSIS ✨

tsctp [-a indication]
      [-A type]
      [-D]
      [-f fragmentation_point]
      [-l buffersize]
      [-L local_address]
      [-n number_of_messages]
      [-p port]
      [-R rcvbufsize]
      [-S sndbufsize]
      [-t timetolive]
      [-T runtime]
      [-u]
      [-U udp_port]
      [-v]
      [-V]
      [-4]
      [-6]
      [remote_address]

like, that's a LOT of flags. she's flexible. she contains multitudes. 💅

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🌸 DESCRIPTION 🌸

so tsctp is an SCTP test tool, periodt. you use it to run basic tests with the SCTP protocol. but heads up bestie — for this whole thing to work, your kernel needs to support SCTP, meaning sockets with protocol IPPROTO_SCTP. no kernel support, no vibes. 🫶

here's how you get the module loaded:

Linux:

echo sctp >/etc/modules-load.d/sctp.conf

then reboot to load the module. 🌈

Note: please make sure the SCTP module is NOT blacklisted — for example /etc/modprobe.d/sctp-blacklist.conf in Fedora Linux. that would be so rude of it. 😭

FreeBSD:

echo 'sctp_load="YES"' >>/boot/loader.conf

then reboot to load the module. iconic. ✨

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🎀 ARGUMENTS 🎀

the following arguments may be provided:

• -a indication — set the adaptation layer indication. cute little setting.
• -A type — set the chunk type to authenticate .
• -D — turns Nagle's Algorithm off. she said no thank you 💅
• -f fragmentation_point — set the fragmentation point.
• -l buffersize — set the size of the send/receive buffer. for sending messages, this literally means the message size! not a vibe, an actual byte count. 💀
• -L local_address — set the local address.
• -n number_of_messages — set the number of messages to be sent (0 means infinite) / received. yes, zero = forever, bestie.
• -p port — set the port number.
• -R rcvbufsize — set the socket recv buffer.
• -S sndbufsize — set the socket send buffer.
• -t timetolive — set the time to live for messages.
• -T runtime — set the time to send messages.
• -u — set the use of unordered messages.
• -U udp_port — use UDP encapsulation with the given port.
• -v — enable verbose output.
• -V — enable very verbose output. she's not like other flags. 👑
• -4 — use IPv4 only.
• -6 — use IPv6 only.
• remote_address — if a remote address is given, client mode kicks in. then tsctp connects the socket to the given remote address. otherwise, with no remote address given, server mode activates — then tsctp listens for incoming connections. two modes, one tool, slay. 🦋

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⭐ EXIT STATUS ⭐

the tsctp tool exits with 0 on success, and >0 in case of an error. that's it, that's the whole vibe check. ✅

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🌈 EXAMPLES 🌈

client and server moments, let's gooo:

server mode — bind to all IPv4 and IPv6 addresses, listen on port 1234:

tsctp -L :: -L 0.0.0.0 -p 1234

client mode — bind to all IPv4 and IPv6 addresses, connect to localhost (127.0.0.1) on port 1234, send 10 messages of 1000 bytes each:

tsctp -L :: -L 0.0.0.0 -n 10 -l 1000 -p 1234 127.0.0.1

client mode — bind to all IPv4 and IPv6 addresses, connect to localhost (127.0.0.1) on port 1234, send unlimited number of messages of 4096 bytes each, stop after 10 s:

tsctp -L :: -L 0.0.0.0 -n 0 -T 10 -l 4096 -p 1234 127.0.0.1

see what I mean about -n 0? infinite. she never stops. 🧚

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💜 NOTES 💜

the latest version of TSCTP can be found on the TSCTP Homepage at TSCTP Homepage: https://www.nntb.no/~dreibh/tsctp/. go look bestie, iykyk. 🔥

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💖 AUTHORS 💖

• Michael Tüxen, Homepage: https://www.fh-muenster.de/en/eti/ueber-uns/personen/tuexen/
• Thomas Dreibholz, Homepage: https://www.nntb.no/~dreibh
• Robin Seggelmann
• Irene Rüngeler

four absolute icons, the way they literally built this. 👑

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and that's the whole page, bestie!! this tsctp(1) manual — source tsctp, version dated May 17, 2026 — said what it said and ate, no crumbs left. go test some SCTP, you've got this. bye bye!! 💖✨🎀🦋🌸🫶