Re: How to save the stream data for a special protocol

[Stephen Fisher <steve () stephen-fisher com>]

---- On Fri, 27 Jul 2012 02:51:02 -0600 qiang.huang<qiang.huang () symbio com> wrote ---- 

> It's no problem for us to write a "dissector Plugin" to dissect one or 
> more packets for a special protocol. 
>   
> But we find that it's nearly impossible to use it to save its stream 
> data for its serials of packets without repeating. 
>  
> As long as a user refreshes or clicks the wireshark's packet tree for 
> some detailed informations, the dissector function will be called again. 

The best solution would be to make another way to export the data in the fashion that the File -> Export Objects works 
(see ui/gtk/export_object.c and ui/gtk/export_object_http.c and epan/dissectors/packet-http.c for an example).  If you 
need to do it only from the dissector, you can use the PINFO_FD_VISITED(pinfo) macro (which checks the 
pinfo->fd->flags.visited variable) to see if that packet was already dissected by Wireshark and only export if that 
variable is false.

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