FastClick

Elements / TCP

SetTCPChecksum

sets TCP packets' checksums

SYNOPSIS§

SetTCPChecksum([FIXOFF])

Batching: Batching natively supported
Ports: 1 input, 1 output
Processing: agnostic

DESCRIPTION§

Input packets should be TCP in IP.

Calculates the TCP header's checksum and sets the checksum header field. Uses the IP header fields to generate the pseudo-header.

SEE ALSO§

CheckTCPHeader, SetIPChecksum, CheckIPHeader, SetUDPChecksum

Generated by click-elem2man from ../elements/tcpudp/settcpchecksum.hh:7 on 2026/11/02.