tmedicci opened a new pull request, #2928:
URL: https://github.com/apache/nuttx-apps/pull/2928
## Summary
* interpreters/python: Enable Python's socket module
Enables the Python's socket module. This allows applications to be built to
interact with POSIX-compatible sockets, which is supported by NuttX.
## Impact
Allows application to use system's sockets within Python interpreter. Once
accepted, I will update the `rv-virt:cpython` defconfig on NuttX's repository
and provide a proper documentation on how to use it.
## Testing
Internal CI testing + `rv-virt:python`:
Copy the following `defconfig` to
`boards/risc-v/qemu-rv/rv-virt/configs/python/defconfig`:
```
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed
.config file.
# You can then do "make savedefconfig" to generate a new defconfig file that
includes your
# modifications.
#
# CONFIG_DISABLE_OS_API is not set
# CONFIG_NSH_DISABLE_LOSMART is not set
CONFIG_16550_ADDRWIDTH=0
CONFIG_16550_UART0=y
CONFIG_16550_UART0_BASE=0x10000000
CONFIG_16550_UART0_CLOCK=3686400
CONFIG_16550_UART0_IRQ=37
CONFIG_16550_UART0_SERIAL_CONSOLE=y
CONFIG_16550_UART=y
CONFIG_ALLOW_BSD_COMPONENTS=y
CONFIG_ARCH="risc-v"
CONFIG_ARCH_BOARD="rv-virt"
CONFIG_ARCH_BOARD_QEMU_RV_VIRT=y
CONFIG_ARCH_CHIP="qemu-rv"
CONFIG_ARCH_CHIP_QEMU_RV32=y
CONFIG_ARCH_CHIP_QEMU_RV=y
CONFIG_ARCH_CHIP_QEMU_RV_ISA_A=y
CONFIG_ARCH_CHIP_QEMU_RV_ISA_C=y
CONFIG_ARCH_CHIP_QEMU_RV_ISA_M=y
CONFIG_ARCH_FLOAT_H=y
CONFIG_ARCH_INTERRUPTSTACK=2048
CONFIG_ARCH_RISCV=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_AUDIO=y
CONFIG_BOARDCTL_ROMDISK=y
CONFIG_BOARD_LOOPSPERMSEC=6366
CONFIG_BUILTIN=y
CONFIG_CODECS_HASH_MD5=y
CONFIG_DEBUG_FEATURES=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_DEV_SIMPLE_ADDRENV=y
CONFIG_DEV_URANDOM=y
CONFIG_DRIVERS_AUDIO=y
CONFIG_DRIVERS_VIRTIO=y
CONFIG_DRIVERS_VIRTIO_BLK=y
CONFIG_DRIVERS_VIRTIO_MMIO=y
CONFIG_DRIVERS_VIRTIO_NET=y
CONFIG_DRIVERS_VIRTIO_RNG=y
CONFIG_DRIVERS_VIRTIO_SERIAL=y
CONFIG_DRIVERS_VIRTIO_SOUND=y
CONFIG_ELF=y
CONFIG_EVENT_FD=y
CONFIG_EXAMPLES_HELLO=m
CONFIG_EXAMPLES_LEDS=y
CONFIG_EXPERIMENTAL=y
CONFIG_FAT_LCNAMES=y
CONFIG_FAT_LFN=y
CONFIG_FRAME_POINTER=y
CONFIG_FS_FAT=y
CONFIG_FS_FATTIME=y
CONFIG_FS_HOSTFS=y
CONFIG_FS_PROCFS=y
CONFIG_FS_ROMFS=y
CONFIG_FS_TMPFS=y
CONFIG_IDLETHREAD_STACKSIZE=4096
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INIT_STACKSIZE=4096
CONFIG_INTELHEX_BINARY=y
CONFIG_INTERPRETER_CPYTHON=y
CONFIG_IOB_BUFSIZE=1530
CONFIG_IOB_THROTTLE=2
CONFIG_LIBC_ENVPATH=y
CONFIG_LIBC_EXECFUNCS=y
CONFIG_LIBC_LOCALE=y
CONFIG_LIBC_LOCALE_GETTEXT=y
CONFIG_LIBC_PERROR_STDOUT=y
CONFIG_LIBC_STRERROR=y
CONFIG_LIBM_NEWLIB=y
CONFIG_LIB_SYSCALL=y
CONFIG_LIB_ZLIB=y
CONFIG_NET=y
CONFIG_NETDB_DNSCLIENT=y
CONFIG_NETDB_DNSCLIENT_ENTRIES=4
CONFIG_NETDB_DNSSERVER_NOADDR=y
CONFIG_NETINIT_DNS=y
CONFIG_NETINIT_DNSIPADDR=0x08080808
CONFIG_NETINIT_DRIPADDR=0x0a000202
CONFIG_NETINIT_IPADDR=0x0a00020f
CONFIG_NETINIT_NOMAC=y
CONFIG_NETUTILS_CODECS=y
CONFIG_NETUTILS_IPERF=y
CONFIG_NETUTILS_TELNETD=y
CONFIG_NETUTILS_TFTPC=y
CONFIG_NETUTILS_WEBCLIENT=y
CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1514
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=28
CONFIG_NET_MAX_LISTENPORTS=8
CONFIG_NET_RECV_BUFSIZE=16384
CONFIG_NET_STATISTICS=y
CONFIG_NET_TCP=y
CONFIG_NET_TCPBACKLOG=y
CONFIG_NET_UDP=y
CONFIG_NFS=y
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_FILE_APPS=y
CONFIG_NSH_LINELEN=300
CONFIG_NSH_READLINE=y
CONFIG_NSH_SYMTAB=y
CONFIG_NSH_SYMTAB_ARRAYNAME="g_symtab"
CONFIG_NSH_SYMTAB_COUNTNAME="g_nsymbols"
CONFIG_NSH_VARS=y
CONFIG_NXPLAYER_HTTP_STREAMING_SUPPORT=y
CONFIG_NXPLAYER_MAINTHREAD_STACKSIZE=3072
CONFIG_PATH_INITIAL="/system/bin"
CONFIG_PIPES=y
CONFIG_PSEUDOFS_SOFTLINKS=y
CONFIG_RAM_SIZE=33554432
CONFIG_RAM_START=0x80000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RISCV_SEMIHOSTING_HOSTFS=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_HAVE_PARENT=y
CONFIG_SCHED_HPWORK=y
CONFIG_SCHED_LPWORK=y
CONFIG_SCHED_WAITPID=y
CONFIG_SERIAL_UART_ARCH_MMIO=y
CONFIG_STACK_COLORATION=y
CONFIG_START_DAY=2
CONFIG_START_MONTH=11
CONFIG_START_YEAR=2022
CONFIG_SYMTAB_ORDEREDBYNAME=y
CONFIG_SYSLOG_TIMESTAMP=y
CONFIG_SYSTEM_DHCPC_RENEW=y
CONFIG_SYSTEM_NSH=y
CONFIG_SYSTEM_NSH_STACKSIZE=3072
CONFIG_SYSTEM_NXPLAYER=y
CONFIG_SYSTEM_NXRECORDER=y
CONFIG_SYSTEM_PING=y
CONFIG_TESTING_GETPRIME=y
CONFIG_TESTING_OSTEST=y
CONFIG_TIMER_FD=y
CONFIG_TLS_NELEM=10
CONFIG_TLS_TASK_NELEM=10
CONFIG_USERLED=y
CONFIG_USERLED_LOWER=y
```
Build the firmware:
```
make -j distclean && ./tools/configure.sh rv-virt:python && make -j$(nproc)
```
Run it on RISC-V QEMU:
```
$ qemu-system-riscv32 -semihosting -M virt,aclint=on -cpu rv32 -smp 8 \
-global virtio-mmio.force-legacy=false \
-device virtio-serial-device,bus=virtio-mmio-bus.0 \
-chardev
socket,telnet=on,host=127.0.0.1,port=3450,server=on,wait=off,id=foo \
-device virtconsole,chardev=foo \
-device virtio-rng-device,bus=virtio-mmio-bus.1 \
-netdev
user,id=u1,hostfwd=tcp:127.0.0.1:10023-10.0.2.15:23,hostfwd=tcp:127.0.0.1:15001-10.0.2.15:5001
\
-device virtio-net-device,netdev=u1,bus=virtio-mmio-bus.2 \
-drive file=./mydisk-1gb.img,if=none,format=raw,id=hd \
-device virtio-blk-device,bus=virtio-mmio-bus.3,drive=hd \
-bios none -kernel ./nuttx -nographic
ABC[ 0.041713] board_userled: LED 1 set to 0
[ 0.042368] board_userled: LED 2 set to 0
[ 0.042450] board_userled: LED 3 set to 0
telnetd [4:100]
NuttShell (NSH) NuttX-10.4.0
nsh>
```
And, finally, test connecting to a server on web, for instance:
```
nsh> python_mount_modules
Mounting ROMFS filesystem at target=/usr/local/lib/ with source=/dev/ram1
nsh> export PYTHONHOME /usr/local
nsh> export PYTHON_BASIC_REPL 1
nsh> python
Python 3.13.0 (main, Jan 6 2025, 16:47:32) [GCC 13.2.0] on nuttx
Type "help", "copyright", "credits" or "license" for more information.
>>> import socket
>>> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>>> sock.settimeout(5)
>>> sock.connect(("www.google.com", 80))
```
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