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extmod/modlwip: Implement sendall() method for TCP sockets.

This commit is contained in:
Paul Sokolovsky 2016-05-03 10:42:47 +03:00
parent 879bc4197a
commit cfc94bec9f
1 changed files with 43 additions and 0 deletions
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43
extmod/modlwip.c
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@ -964,6 +964,48 @@ STATIC mp_obj_t lwip_socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(lwip_socket_recvfrom_obj, lwip_socket_recvfrom);
STATIC mp_obj_t lwip_socket_sendall(mp_obj_t self_in, mp_obj_t buf_in) {
lwip_socket_obj_t *socket = self_in;
lwip_socket_check_connected(socket);
int _errno;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
mp_uint_t ret = 0;
switch (socket->type) {
case MOD_NETWORK_SOCK_STREAM: {
if (socket->timeout == 0) {
// Behavior of sendall() for non-blocking sockets isn't explicitly specified.
// But it's specified that "On error, an exception is raised, there is no
// way to determine how much data, if any, was successfully sent." Then, the
// most useful behavior is: check whether we will be able to send all of input
// data without EAGAIN, and if won't be, raise it without sending any.
if (bufinfo.len > tcp_sndbuf(socket->pcb.tcp)) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(EAGAIN)));
}
}
// TODO: In CPython3.5, socket timeout should apply to the
// entire sendall() operation, not to individual send() chunks.
while (bufinfo.len != 0) {
ret = lwip_tcp_send(socket, bufinfo.buf, bufinfo.len, &_errno);
if (ret == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
bufinfo.len -= ret;
bufinfo.buf = (char*)bufinfo.buf + ret;
}
break;
}
case MOD_NETWORK_SOCK_DGRAM:
mp_not_implemented("");
break;
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(lwip_socket_sendall_obj, lwip_socket_sendall);
STATIC mp_obj_t lwip_socket_settimeout(mp_obj_t self_in, mp_obj_t timeout_in) {
lwip_socket_obj_t *socket = self_in;
mp_uint_t timeout;
@ -1068,6 +1110,7 @@ STATIC const mp_map_elem_t lwip_socket_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&lwip_socket_recv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_sendto), (mp_obj_t)&lwip_socket_sendto_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recvfrom), (mp_obj_t)&lwip_socket_recvfrom_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_sendall), (mp_obj_t)&lwip_socket_sendall_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_settimeout), (mp_obj_t)&lwip_socket_settimeout_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_setblocking), (mp_obj_t)&lwip_socket_setblocking_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_setsockopt), (mp_obj_t)&lwip_socket_setsockopt_obj },