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https://github.com/ghostop14/gr-grnet
GNURadio TCP/UDP source and sink blocks rewritten in C++/Boost. UDP block has header/crc options available as well.
https://github.com/ghostop14/gr-grnet
Last synced: 3 months ago
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GNURadio TCP/UDP source and sink blocks rewritten in C++/Boost. UDP block has header/crc options available as well.
- Host: GitHub
- URL: https://github.com/ghostop14/gr-grnet
- Owner: ghostop14
- License: gpl-3.0
- Created: 2017-04-12T18:29:27.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2023-07-06T14:29:38.000Z (over 1 year ago)
- Last Synced: 2024-08-02T01:24:18.248Z (6 months ago)
- Language: C++
- Homepage:
- Size: 444 KB
- Stars: 32
- Watchers: 6
- Forks: 17
- Open Issues: 9
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Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# gr-grnet
GNURadio TCP and UDP source and sink blocks completely rewritten in C++ with Boost.
The UDP block has some additional header options that can be optionally enabled as well:
Header/CRC
None (raw byte stream)
64-bit sequence numbers (Can be used between source/sink blocks to detect dropped packets)
64-bit sequence numbers + 16-bit data size
CHDR (64-bit)
## IPv6
New: IPv6 support has been added to the blocks. Any block can take an IPv4 or IPv6 IP and appropriately handle it. Names can also be used rather than just IP addresses and if names resolve to IPv6 the addresses will be handled transparently.
## Building
This module requires zlib for the crc32 calculations in the UDP module and libpcap for the PCAPUDPSource block. You can install them with 'apt-get install zlib1g-dev libpcap-dev' if it's not already present.
Build is pretty standard:
mkdir build
cd build
cmake ..
make
make install
ldconfig
Also, if you plan on using the UDP blocks, it is strongly recommended that you increase the kernel buffer sizes for UDP packets. You can do this by adding the following lines to /etc/sysctl.conf and rebooting (note setting within the running session with systcl -w will not work, you have to reboot):
net.core.rmem_default=26214400
net.core.rmem_max=104857600
net.core.wmem_default=65536
net.core.wmem_max=104857600
## Performance
Throughput is always important. Each was measured against a local 127.0.0.1 listener on port 2000. The following metrics were generated (the module installs a test-netsink command-line tool that can be used to test your own performance.
(Commas were added to the Bps output for clarity). The results indicate that the blocks can sustain network traffic at full gigabit network throughput if necessary.
TCP Sink
Testing netsink. Sending test data to 127.0.0.1:2000
Code Run Time: 0.000002 s (4,093,850,624.000000 Bps)
TCP Source
TCP Source waiting for connection on 0.0.0.0:2000
TCP Source 0.0.0.0:2000 connected.
Connected. Waiting for data...
Data received. Processing...
Code Run Time: 0.000002 s (3,957,239,296.000000 Bps)
UDP Sink
Testing netsink. Sending test data to 127.0.0.1:2000
Code Run Time: 0.000002 s (3,734,619,648.000000 Bps)
UDP Source
Waiting for connection...
Connected. Waiting for data...
Data received. Processing 8192 bytes
Code Run Time: 0.000002 s (3,734,619,648.000000 Bps)
## Notes
If with the TCP Source you run into an error like this: "ICE default IO error handler doing an exit()" delete your ~/.ICEauthority file, logoff and log back in again then try again.