| ====================== |
| ``netcat`` NetCat tool |
| ====================== |
| |
| netcat TCP/IP Swiss army knife. |
| |
| It was re-implemented from scratch for NuttX |
| |
| DEMO |
| ---- |
| |
| .. image:: https://files.mastodon.social/media_attachments/files/105/163/916/892/863/178/original/05468e28b4463f95.png |
| |
| * https://mastodon.social/@rzr/105225153152922220#weboftwins-osvehicle-2020-rzr |
| * https://purl.org/rzr/weboftwins |
| |
| USAGE |
| ----- |
| |
| Usage is straightforward:: |
| |
| nsh> help ; netcat |
| Usage: netcat [-l] [destination] [port] [file] |
| |
| nsh> renew eth0 ; ifconfig |
| |
| eth0 Link encap:Ethernet HWaddr 52:13:FF:FF:FF:FF at UP |
| inet addr:192.168.1.42 DRaddr:192.168.1.254 Mask:255.255.255.0 |
| |
| In the following examples, following configuration is used: |
| |
| - target (nuttx) is 192.168.1.42 |
| - host (linux) is 192.168.1.55 |
| |
| Server |
| ~~~~~~ |
| |
| As a server on NuttX and Linux's netcat as client:: |
| |
| nsh> netcat -l |
| |
| sh> cat /proc/version | netcat 192.168.1.42 31337 |
| Linux ... |
| |
| Default port is 31337 but it can changed:: |
| |
| nsh> renew eth0 ; ifconfig ; netcat -l |
| log: net: listening on :31337 |
| Linux ... |
| |
| Client |
| ~~~~~~ |
| |
| Start Server on GNU/Linux:: |
| |
| sh> ip addr show && netcat -l 31337 |
| |
| Client side on nuttx, we create:: |
| |
| nsh> help ; renew eth0 ; ifconfig |
| nsh> netcat 192.168.1.55 31337 /proc/version |
| |
| Using pipes |
| ~~~~~~~~~~~ |
| |
| .. code-block:: bash |
| |
| mkfifo /dev/fifo |
| netcat 192.168.1.55 31337 /proc/fifo |
| help > /dev/fifo |
| |
| fxos8700cq > /dev/fifo & |
| fxos8700cq [7:100] |
| netcat 192.168.1.55 31337 /dev/fifo |
| |
| Resources |
| ~~~~~~~~~ |
| |
| * <https://en.wikipedia.org/wiki/Netcat> |
| * <https://purl.org/rzr/weboftwins> |
| * <https://github.com/rzr/aframe-smart-home/issues/3> |
