a-lunev opened a new pull request #952: URL: https://github.com/apache/incubator-nuttx-apps/pull/952
## Summary This option enables using sendfile() in netcat client mode if a normal file (not stdin) is sent. If the option is enabled but stdin is sent rather than a normal file, netcat falls back to the combination of read() and write(). Using sendfile() provides a higher performance compared to the combination of read() and write(). Also this option is useful for testing / debugging tcp_sendfile() functionality of NuttX TCP/IP stack. ## Impact netutils/netcat ## Testing Build NuttX: ``` $ ./tools/configure.sh -l sim:tcpblaster $ make menuconfig (enable CONFIG_NETUTILS_NETCAT_SENDFILE, enable / disable CONFIG_NET_TCP_WRITE_BUFFERS) $ make ``` Enable TUN/TAP on Linux host: ``` $ sudo setcap cap_net_admin+ep ./nuttx $ sudo ./tools/simhostroute.sh wlan0 on ``` Run netcat server on Linux host: `$ netcat -l -p 31337` Run NuttX on Linux host: ``` $ ./nuttx NuttShell (NSH) NuttX-10.2.0 nsh> ifconfig eth0 10.0.1.2 nsh> ifup eth0 ifup eth0...OK ``` Start Wireshark (or tcpdump) and capture appeared tap0 interface. Run in NuttX: ``` nsh> dd if=/dev/zero of=/tmp/test.bin count=1000 nsh> netcat LINUX_HOST_IP_ADDRESS 31337 /tmp/test.bin ``` Observe TCP dump. Shutdown NuttX: `nsh> poweroff` Disable TUN/TAP on Linux host: `$ sudo ./tools/simhostroute.sh wlan0 off` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
