Ethereal-dev: [Ethereal-dev] Extra addressing columns

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From: Shaun Jackman <sjackman@xxxxxxxxxxxxxxxxxx>
Date: Fri, 06 Jun 2003 18:46:31 -0000
I'm writing a decoder for a protocol that has another layer of
addressing on top if UDP/IP. I'd like to add an application layer source
and destination column. How would I go about this? In the mean time, as
a hack, I tried reusing the COL_SRCIDX and COL_DSTIDX columns with this
code:

guint32 srcid = tvb_get_ntohl( tvb, HEADER_SRCID_OFFSET);
if( check_col( pinfo->cinfo, COL_SRCIDX))
	col_add_fstr( pinfo->cinfo, COL_SRCIDX, "%08x", srcid);

guint32 dstid = tvb_get_ntohl( tvb, HEADER_DSTID_OFFSET);
if( check_col( pinfo->cinfo, COL_DSTIDX))
	col_add_fstr( pinfo->cinfo, COL_DSTIDX, "%08x", dstid);

Although, this doesn't work. The columns always display 0x0. What's the
best solution to my problem? I know I can stuff this information in the
Info column, but that really clutters it up.

Thanks,
Shaun