Wireshark · Wireshark-dev: [Wireshark-dev] Query regarding GTP protocol

[prashanth joshi <prashanthsjoshi2000@xxxxxxxxx>]

Hi ,

I wanted to print a message in the decode_gtp_cause function. But i did not get any such result in the ethereal display. Please tell me what may be the reason.
the following is the function :

static int decode_gtp_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, p
roto_tree *tree) {

        guint8  cause;
        guint16 length; /* added by me */
        length = 222;
        cause = tvb_get_guint8(tvb, offset+1);
        printf("How are you\n"); /*added by me */
        proto_tree_add_uint(tree, hf_gtp_cause, tvb, offset, 2, cause);
        proto_tree_add_text(tree, tvb, offset+3, 2, "Length : %u", length); /*added by  me                */

        return 2;
}

The corresponding part of ethereal display is as follows :

 

Cause : Request accepted (128)

Length : 222

 

I wanted my message "Length = 222" to occur along with the above output.

But as it is clear here it did not appear.

 

Please any body tell me the reason.

Regards,

Prashanth

 

 

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