On Feb 10, 2014, at 10:19 PM, Vishnu Bhatt <[email protected]> wrote:
> << get_sabp_pdu_len(), that looks at the first few bytes of the message > (using a routine to do so for ASN.1 PER)>> > > Actually I was asking for some help in this regard only. How does it look at > the first few bytes of the message? I assume by "it" you mean the get_sabp_pdu_len() routine. Given that, it (get_sabp_pdu_len()) looks at the first few bytes of the message by calling dissect_per_length_determinant(). Other "get_pdu_len" routines do so by doing whatever is appropriate for the protocol in question; there is no general mechanism, for *all* protocols running atop TCP, to get the packet length - that's why tcp_dissect_pdus() has to take a pointer to a function as an argument, so each protocol's dissector can supply a "get the PDU length" routine (and a "minimum length needed to find out the PDU length) appropriate to the protocol. > Where the procedure is mentioned (not asking in the code)? tcp_dissect_pdus() is mentioned in the doc/README.dissector file. get_sabp_pdu_len() is mentioned *only* in the code; we don't document every single procedure in every dissector. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <[email protected]> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:[email protected]?subject=unsubscribe
