udp,wireshark,gnuradio , Missing line in “Follow UDP Stream” in wireshark


Missing line in “Follow UDP Stream” in wireshark

Question:

Tag: udp,wireshark,gnuradio

I am streaming raw UDP packets (rf data) from GNU Radio to Octave (or any other program). The data consists of 390625 4 byte floats per second. This is 1562500 bytes per second. When GNU Radio streams UDP, there is no header or sequence number in the UDP data, it's just raw floats. Because this is localhost to localhost, I am able to use a very large MTU.

Attached is a screenshot of Wireshark after right clicking and doing "Follow UDP Stream". There is a "blank" part of the Hex Dump at 0x6F38C8. I don't understand what this means? (I know that UDP does not provide reliable delivery and packets can be dropped and arrive out of order at any moment). Any help would be great!

Wireshark Blank line in UDP Stream Hex Dump


Answer:

The blank part is simply used as a barrier to differentiate between 2 UDP packets, solely for your convenience.


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