modusocket.c 17.7 KB
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/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George
 * Copyright (c) 2015 Daniel Campora
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include <stdint.h>
#include <string.h>

#include "simplelink.h"
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#include "py/mpstate.h"
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#include MICROPY_HAL_H
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#include "py/runtime.h"
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#include "netutils.h"
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#include "modnetwork.h"
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#include "modwlan.h"
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#include "modusocket.h"
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#include "mpexception.h"

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/******************************************************************************
 DEFINE PRIVATE CONSTANTS
 ******************************************************************************/
#define MOD_NETWORK_MAX_SOCKETS                 10

/******************************************************************************
 DEFINE PRIVATE TYPES
 ******************************************************************************/
typedef struct {
    int16_t sd;
    bool    user;
} modusocket_sock_t;

/******************************************************************************
 DEFINE PRIVATE DATA
 ******************************************************************************/
STATIC OsiLockObj_t modusocket_LockObj;
STATIC modusocket_sock_t modusocket_sockets[MOD_NETWORK_MAX_SOCKETS] = {{.sd = -1}, {.sd = -1}, {.sd = -1}, {.sd = -1}, {.sd = -1},
                                                                        {.sd = -1}, {.sd = -1}, {.sd = -1}, {.sd = -1}, {.sd = -1}};

/******************************************************************************
 DEFINE PUBLIC FUNCTIONS
 ******************************************************************************/
__attribute__ ((section (".boot")))
void modusocket_pre_init (void) {
    // create the wlan lock
    ASSERT(OSI_OK == sl_LockObjCreate(&modusocket_LockObj, "SockLock"));
    sl_LockObjUnlock (&modusocket_LockObj);
}
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void modusocket_socket_add (int16_t sd, bool user) {
    sl_LockObjLock (&modusocket_LockObj, SL_OS_WAIT_FOREVER);
    for (int i = 0; i < MOD_NETWORK_MAX_SOCKETS; i++) {
        if (modusocket_sockets[i].sd < 0) {
            modusocket_sockets[i].sd = sd;
            modusocket_sockets[i].user = user;
            break;
        }
    }
    sl_LockObjUnlock (&modusocket_LockObj);
}
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void modusocket_socket_delete (int16_t sd) {
    sl_LockObjLock (&modusocket_LockObj, SL_OS_WAIT_FOREVER);
    for (int i = 0; i < MOD_NETWORK_MAX_SOCKETS; i++) {
        if (modusocket_sockets[i].sd == sd) {
            modusocket_sockets[i].sd = -1;
            break;
        }
    }
    sl_LockObjUnlock (&modusocket_LockObj);
}
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void modusocket_enter_sleep (void) {
    fd_set socketset;
    int16_t maxfd = 0;

    for (int i = 0; i < MOD_NETWORK_MAX_SOCKETS; i++) {
        int16_t sd;
        if ((sd = modusocket_sockets[i].sd) >= 0) {
            FD_SET(sd, &socketset);
            maxfd = (maxfd > sd) ? maxfd : sd;
        }
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    }
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    // wait for any of the sockets to become ready...
    sl_Select(maxfd + 1, &socketset, NULL, NULL, NULL);
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}

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void modusocket_close_all_user_sockets (void) {
    sl_LockObjLock (&modusocket_LockObj, SL_OS_WAIT_FOREVER);
    for (int i = 0; i < MOD_NETWORK_MAX_SOCKETS; i++) {
        if (modusocket_sockets[i].sd >= 0 && modusocket_sockets[i].user) {
            sl_Close(modusocket_sockets[i].sd);
            modusocket_sockets[i].sd = -1;
        }
    }
    sl_LockObjUnlock (&modusocket_LockObj);
}

/******************************************************************************/
// socket class

STATIC const mp_obj_type_t socket_type;

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// constructor socket(family=AF_INET, type=SOCK_STREAM, proto=IPPROTO_TCP, fileno=None)
STATIC mp_obj_t socket_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
    mp_arg_check_num(n_args, n_kw, 0, 4, false);

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    // create socket object
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    mod_network_socket_obj_t *s = m_new_obj_with_finaliser(mod_network_socket_obj_t);
    s->base.type = (mp_obj_t)&socket_type;
    s->u_param.domain = AF_INET;
    s->u_param.type = SOCK_STREAM;
    s->u_param.proto = IPPROTO_TCP;
    s->u_param.fileno = -1;
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    if (n_args > 0) {
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        s->u_param.domain = mp_obj_get_int(args[0]);
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        if (n_args > 1) {
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            s->u_param.type = mp_obj_get_int(args[1]);
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            if (n_args > 2) {
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                s->u_param.proto = mp_obj_get_int(args[2]);
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                if (n_args > 3) {
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                    s->u_param.fileno = mp_obj_get_int(args[3]);
                }
            }
        }
    }
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    // create the socket
    int _errno;
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    if (wlan_socket_socket(s, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
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    s->has_timeout = false;
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    modusocket_socket_add(s->sd, true);
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    return s;
}

// method socket.close()
STATIC mp_obj_t socket_close(mp_obj_t self_in) {
    mod_network_socket_obj_t *self = self_in;
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    wlan_socket_close(self);
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    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close);

// method socket.bind(address)
STATIC mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
    mod_network_socket_obj_t *self = self_in;

    // get address
    uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
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    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
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    // call the NIC to bind the socket
    int _errno;
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    if (wlan_socket_bind(self, ip, port, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_bind_obj, socket_bind);

// method socket.listen(backlog)
STATIC mp_obj_t socket_listen(mp_obj_t self_in, mp_obj_t backlog) {
    mod_network_socket_obj_t *self = self_in;

    int _errno;
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    if (wlan_socket_listen(self, mp_obj_get_int(backlog), &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_listen_obj, socket_listen);

// method socket.accept()
STATIC mp_obj_t socket_accept(mp_obj_t self_in) {
    mod_network_socket_obj_t *self = self_in;

    // create new socket object
    mod_network_socket_obj_t *socket2 = m_new_obj_with_finaliser(mod_network_socket_obj_t);
    socket2->base.type = (mp_obj_t)&socket_type;

    // accept incoming connection
    uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
    mp_uint_t port;
    int _errno;
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    if (wlan_socket_accept(self, socket2, ip, &port, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }

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    // add the socket to the list
    modusocket_socket_add(socket2->sd, true);

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    // make the return value
    mp_obj_tuple_t *client = mp_obj_new_tuple(2, NULL);
    client->items[0] = socket2;
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    client->items[1] = netutils_format_inet_addr(ip, port, NETUTILS_LITTLE);
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    return client;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(socket_accept_obj, socket_accept);

// method socket.connect(address)
STATIC mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
    mod_network_socket_obj_t *self = self_in;

    // get address
    uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
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    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
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    // call the NIC to connect the socket
    int _errno;
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    if (wlan_socket_connect(self, ip, port, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_connect_obj, socket_connect);

// method socket.send(bytes)
STATIC mp_obj_t socket_send(mp_obj_t self_in, mp_obj_t buf_in) {
    mod_network_socket_obj_t *self = self_in;
    mp_buffer_info_t bufinfo;
    mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
    int _errno;
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    mp_uint_t ret = wlan_socket_send(self, bufinfo.buf, bufinfo.len, &_errno);
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    if (ret == -1) {
        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_obj_new_int_from_uint(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_send_obj, socket_send);

// method socket.recv(bufsize)
STATIC mp_obj_t socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
    mod_network_socket_obj_t *self = self_in;
    mp_int_t len = mp_obj_get_int(len_in);
    vstr_t vstr;
    vstr_init_len(&vstr, len);
    int _errno;
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    mp_uint_t ret = wlan_socket_recv(self, (byte*)vstr.buf, len, &_errno);
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    if (ret == -1) {
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        if (_errno == EAGAIN && self->has_timeout) {
            nlr_raise(mp_obj_new_exception_msg(&mp_type_TimeoutError, "timed out"));
        }
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    if (ret == 0) {
        return mp_const_empty_bytes;
    }
    vstr.len = ret;
    vstr.buf[vstr.len] = '\0';
    return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recv_obj, socket_recv);

// method socket.sendto(bytes, address)
STATIC mp_obj_t socket_sendto(mp_obj_t self_in, mp_obj_t data_in, mp_obj_t addr_in) {
    mod_network_socket_obj_t *self = self_in;

    // get the data
    mp_buffer_info_t bufinfo;
    mp_get_buffer_raise(data_in, &bufinfo, MP_BUFFER_READ);

    // get address
    uint8_t ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
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    mp_uint_t port = netutils_parse_inet_addr(addr_in, ip, NETUTILS_LITTLE);
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    // call the nic to sendto
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    int _errno;
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    mp_int_t ret = wlan_socket_sendto(self, bufinfo.buf, bufinfo.len, ip, port, &_errno);
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    if (ret == -1) {
        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_obj_new_int(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(socket_sendto_obj, socket_sendto);

// method socket.recvfrom(bufsize)
STATIC mp_obj_t socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
    mod_network_socket_obj_t *self = self_in;
    vstr_t vstr;
    vstr_init_len(&vstr, mp_obj_get_int(len_in));
    byte ip[4];
    mp_uint_t port;
    int _errno;
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    mp_int_t ret = wlan_socket_recvfrom(self, (byte*)vstr.buf, vstr.len, ip, &port, &_errno);
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    if (ret == -1) {
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        if (_errno == EAGAIN && self->has_timeout) {
            nlr_raise(mp_obj_new_exception_msg(&mp_type_TimeoutError, "timed out"));
        }
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    mp_obj_t tuple[2];
    if (ret == 0) {
        tuple[0] = mp_const_empty_bytes;
    } else {
        vstr.len = ret;
        vstr.buf[vstr.len] = '\0';
        tuple[0] = mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
    }
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    tuple[1] = netutils_format_inet_addr(ip, port, NETUTILS_LITTLE);
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    return mp_obj_new_tuple(2, tuple);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recvfrom_obj, socket_recvfrom);

// method socket.setsockopt(level, optname, value)
STATIC mp_obj_t socket_setsockopt(mp_uint_t n_args, const mp_obj_t *args) {
    mod_network_socket_obj_t *self = args[0];

    mp_int_t level = mp_obj_get_int(args[1]);
    mp_int_t opt = mp_obj_get_int(args[2]);

    const void *optval;
    mp_uint_t optlen;
    mp_int_t val;
    if (mp_obj_is_integer(args[3])) {
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        val = mp_obj_get_int_truncated(args[3]);
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        optval = &val;
        optlen = sizeof(val);
    } else {
        mp_buffer_info_t bufinfo;
        mp_get_buffer_raise(args[3], &bufinfo, MP_BUFFER_READ);
        optval = bufinfo.buf;
        optlen = bufinfo.len;
    }

    int _errno;
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    if (wlan_socket_setsockopt(self, level, opt, optval, optlen, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_setsockopt_obj, 4, 4, socket_setsockopt);

// method socket.settimeout(value)
// timeout=0 means non-blocking
// timeout=None means blocking
// otherwise, timeout is in seconds
STATIC mp_obj_t socket_settimeout(mp_obj_t self_in, mp_obj_t timeout_in) {
    mod_network_socket_obj_t *self = self_in;
    mp_uint_t timeout;
    if (timeout_in == mp_const_none) {
        timeout = -1;
    } else {
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        timeout = mp_obj_get_int(timeout_in);
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    }
    int _errno;
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    if (wlan_socket_settimeout(self, timeout, &_errno) != 0) {
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        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
    }
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_settimeout_obj, socket_settimeout);

// method socket.setblocking(flag)
STATIC mp_obj_t socket_setblocking(mp_obj_t self_in, mp_obj_t blocking) {
    if (mp_obj_is_true(blocking)) {
        return socket_settimeout(self_in, mp_const_none);
    } else {
        return socket_settimeout(self_in, MP_OBJ_NEW_SMALL_INT(0));
    }
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_setblocking_obj, socket_setblocking);

STATIC const mp_map_elem_t socket_locals_dict_table[] = {
    { MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&socket_close_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&socket_close_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_bind), (mp_obj_t)&socket_bind_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_listen), (mp_obj_t)&socket_listen_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_accept), (mp_obj_t)&socket_accept_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&socket_connect_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&socket_send_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&socket_recv_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_sendto), (mp_obj_t)&socket_sendto_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_recvfrom), (mp_obj_t)&socket_recvfrom_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_setsockopt), (mp_obj_t)&socket_setsockopt_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_settimeout), (mp_obj_t)&socket_settimeout_obj },
    { MP_OBJ_NEW_QSTR(MP_QSTR_setblocking), (mp_obj_t)&socket_setblocking_obj },
};

STATIC MP_DEFINE_CONST_DICT(socket_locals_dict, socket_locals_dict_table);

mp_uint_t socket_ioctl(mp_obj_t self_in, mp_uint_t request, mp_uint_t arg, int *errcode) {
    mod_network_socket_obj_t *self = self_in;
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    return wlan_socket_ioctl(self, request, arg, errcode);
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}

STATIC const mp_stream_p_t socket_stream_p = {
    .ioctl = socket_ioctl,
    .is_text = false,
};

STATIC const mp_obj_type_t socket_type = {
    { &mp_type_type },
    .name = MP_QSTR_socket,
    .make_new = socket_make_new,
    .stream_p = &socket_stream_p,
    .locals_dict = (mp_obj_t)&socket_locals_dict,
};

/******************************************************************************/
// usocket module

// function usocket.getaddrinfo(host, port)
/// \function getaddrinfo(host, port)
STATIC mp_obj_t mod_usocket_getaddrinfo(mp_obj_t host_in, mp_obj_t port_in) {
    mp_uint_t hlen;
    const char *host = mp_obj_str_get_data(host_in, &hlen);
    mp_int_t port = mp_obj_get_int(port_in);

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    // ipv4 only
    uint8_t out_ip[MOD_NETWORK_IPV4ADDR_BUF_SIZE];
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    int32_t result = wlan_gethostbyname(host, hlen, out_ip, AF_INET);
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    if (result != 0) {
        nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(result)));
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    }
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    mp_obj_tuple_t *tuple = mp_obj_new_tuple(5, NULL);
    tuple->items[0] = MP_OBJ_NEW_SMALL_INT(AF_INET);
    tuple->items[1] = MP_OBJ_NEW_SMALL_INT(SOCK_STREAM);
    tuple->items[2] = MP_OBJ_NEW_SMALL_INT(0);
    tuple->items[3] = MP_OBJ_NEW_QSTR(MP_QSTR_);
    tuple->items[4] = netutils_format_inet_addr(out_ip, port, NETUTILS_LITTLE);
    return mp_obj_new_list(1, (mp_obj_t*)&tuple);
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}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_usocket_getaddrinfo_obj, mod_usocket_getaddrinfo);

STATIC const mp_map_elem_t mp_module_usocket_globals_table[] = {
    { MP_OBJ_NEW_QSTR(MP_QSTR___name__),        MP_OBJ_NEW_QSTR(MP_QSTR_usocket) },

    { MP_OBJ_NEW_QSTR(MP_QSTR_socket),          (mp_obj_t)&socket_type },
    { MP_OBJ_NEW_QSTR(MP_QSTR_getaddrinfo),     (mp_obj_t)&mod_usocket_getaddrinfo_obj },

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    // class exceptions
    { MP_OBJ_NEW_QSTR(MP_QSTR_error),           (mp_obj_t)&mp_type_OSError },
    { MP_OBJ_NEW_QSTR(MP_QSTR_timeout),         (mp_obj_t)&mp_type_TimeoutError },

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    // class constants
    { MP_OBJ_NEW_QSTR(MP_QSTR_AF_INET),         MP_OBJ_NEW_SMALL_INT(AF_INET) },
    { MP_OBJ_NEW_QSTR(MP_QSTR_AF_INET6),        MP_OBJ_NEW_SMALL_INT(AF_INET6) },

    { MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_STREAM),     MP_OBJ_NEW_SMALL_INT(SOCK_STREAM) },
    { MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_DGRAM),      MP_OBJ_NEW_SMALL_INT(SOCK_DGRAM) },
    { MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_RAW),        MP_OBJ_NEW_SMALL_INT(SOCK_RAW) },

468
    { MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_SEC),     MP_OBJ_NEW_SMALL_INT(SL_SEC_SOCKET) },
469
470
471
472
473
474
475
476
477
478
479
480
    { MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_TCP),     MP_OBJ_NEW_SMALL_INT(IPPROTO_TCP) },
    { MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_UDP),     MP_OBJ_NEW_SMALL_INT(IPPROTO_UDP) },
    { MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_RAW),     MP_OBJ_NEW_SMALL_INT(IPPROTO_RAW) },
};

STATIC MP_DEFINE_CONST_DICT(mp_module_usocket_globals, mp_module_usocket_globals_table);

const mp_obj_module_t mp_module_usocket = {
    .base = { &mp_type_module },
    .name = MP_QSTR_usocket,
    .globals = (mp_obj_dict_t*)&mp_module_usocket_globals,
};