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esp32: Add support for TCP_NODELAY.

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This adds support for the TCP_NODELAY socket option for lwIP sockets.
Generally, TCP sockets use the Nagle algorithm and will send data when
an ACK is received or after all previously-sent data has already been
ACKed.

If the TCP_NODELAY option is set for a socket, every write to the socket
will trigger a packet to be sent.

Signed-off-by: Jared Hancock <jared@greezybacon.me>
This commit is contained in:
Jared Hancock 2024-05-23 20:37:55 -05:00 committed by Jared Hancock
parent b1e9602702
commit a196468c47
1 changed files with 11 additions and 0 deletions
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11
ports/esp32/modsocket.c
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@ -528,6 +528,16 @@ static mp_obj_t socket_setsockopt(size_t n_args, const mp_obj_t *args) {
}
#endif
// level: IPPROTO_TCP
case TCP_NODELAY: {
int val = mp_obj_get_int(args[3]);
int ret = lwip_setsockopt(self->fd, IPPROTO_TCP, opt, &val, sizeof(int));
if (ret != 0) {
mp_raise_OSError(errno);
}
break;
}
// level: IPPROTO_IP
case IP_ADD_MEMBERSHIP: {
mp_buffer_info_t bufinfo;
@ -995,6 +1005,7 @@ static const mp_rom_map_elem_t mp_module_socket_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_SO_BROADCAST), MP_ROM_INT(SO_BROADCAST) },
{ MP_ROM_QSTR(MP_QSTR_SO_BINDTODEVICE), MP_ROM_INT(SO_BINDTODEVICE) },
{ MP_ROM_QSTR(MP_QSTR_IP_ADD_MEMBERSHIP), MP_ROM_INT(IP_ADD_MEMBERSHIP) },
{ MP_ROM_QSTR(MP_QSTR_TCP_NODELAY), MP_ROM_INT(TCP_NODELAY) },
};
static MP_DEFINE_CONST_DICT(mp_module_socket_globals, mp_module_socket_globals_table);