providing .pcap files for protocols or protocol features that tcpdump supports, but does not test yet helping to improve the continuous integration scripts and infrastructure

The only difference between these two functions is that pcap_dispatch () will only process the first batch of packets that it receives from the system, while pcap_loop () will continue processing packets or …

Sep 18, 2024 · Packets are read with pcap_dispatch () or pcap_loop (), which process one or more packets, calling a callback routine for each packet, or with pcap_next () or pcap_next_ex (), which …

This function is only provided on Linux, and, if it is used on any device other than a network interface, it will have no effect. It should not be used in portable code; instead, a filter should be specified with …

Jun 30, 2025 · Reading packets from a network interface may require that you have special privileges; see the pcap (3PCAP) man page for details. Reading a saved packet file doesn't require special …

Nov 22, 2025 · This primitive requires to specify the netmask, which cannot be done in the filter expression; the only way to specify a netmask is via the netmask argument of the pcap_compile () …

Mar 11, 2025 · All supported Linux systems, as well as recent versions of macOS and Solaris, implement a special "any" pseudo-interface, which captures packets from all regular network …

May 29, 2025 · On Linux, if the pcap_t handle corresponds to a live packet capture, the resulting filter program may use Linux BPF extensions. This works transparently if the filter program is used to filter …

Mar 5, 2022 · It returns PCAP_ERROR_BREAK if the loop terminated due to a call to pcap_breakloop () before any packets were processed, PCAP_ERROR_NOT_ACTIVATED if called on a capture …

The table below lists link-layer header types used in pcap and pcap-ng capture files. The LINKTYPE_ name is the name given to that link-layer header type, and the LINKTYPE_ value is the numerical …