cc3200: Add socket.timeout and socket.error exceptions.

cc3200/mods/modnetwork.h

@@ -52,6 +52,7 @@ typedef struct _mod_network_socket_obj_t {
         int16_t sd;
     };
     bool  closed;
+    bool  has_timeout;
 } mod_network_socket_obj_t;
 
 /******************************************************************************

cc3200/mods/modusocket.c

@@ -153,6 +153,7 @@ STATIC mp_obj_t socket_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_
         nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
     }
 
+    s->has_timeout = false;
     modusocket_socket_add(s->sd, true);
     return s;
 }
@@ -261,6 +262,9 @@ STATIC mp_obj_t socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
     int _errno;
     mp_uint_t ret = wlan_socket_recv(self, (byte*)vstr.buf, len, &_errno);
     if (ret == -1) {
+        if (_errno == EAGAIN && self->has_timeout) {
+            nlr_raise(mp_obj_new_exception_msg(&mp_type_TimeoutError, "timed out"));
+        }
         nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
     }
     if (ret == 0) {
@@ -304,6 +308,9 @@ STATIC mp_obj_t socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
     int _errno;
     mp_int_t ret = wlan_socket_recvfrom(self, (byte*)vstr.buf, vstr.len, ip, &port, &_errno);
     if (ret == -1) {
+        if (_errno == EAGAIN && self->has_timeout) {
+            nlr_raise(mp_obj_new_exception_msg(&mp_type_TimeoutError, "timed out"));
+        }
         nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
     }
     mp_obj_t tuple[2];
@@ -446,6 +453,10 @@ STATIC const mp_map_elem_t mp_module_usocket_globals_table[] = {
     { 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 },
 
+    // 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 },
+
     // 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) },

cc3200/mods/modwlan.c

@@ -1281,6 +1281,7 @@ int wlan_socket_setsockopt(mod_network_socket_obj_t *socket, mp_uint_t level, mp
 
 int wlan_socket_settimeout(mod_network_socket_obj_t *s, mp_uint_t timeout_s, int *_errno) {
     int ret;
+    bool has_timeout;
     if (timeout_s == 0 || timeout_s == -1) {
         SlSockNonblocking_t option;
         if (timeout_s == 0) {
@@ -1291,12 +1292,14 @@ int wlan_socket_settimeout(mod_network_socket_obj_t *s, mp_uint_t timeout_s, int
             option.NonblockingEnabled = 0;
         }
         ret = sl_SetSockOpt(s->sd, SOL_SOCKET, SO_NONBLOCKING, &option, sizeof(option));
+        has_timeout = false;
     } else {
         // set timeout
         struct SlTimeval_t timeVal;
         timeVal.tv_sec = timeout_s;       // seconds
         timeVal.tv_usec = 0;              // microseconds. 10000 microseconds resolution
         ret = sl_SetSockOpt(s->sd, SOL_SOCKET, SO_RCVTIMEO, &timeVal, sizeof(timeVal));
+        has_timeout = true;
     }
 
     if (ret != 0) {
@@ -1304,6 +1307,7 @@ int wlan_socket_settimeout(mod_network_socket_obj_t *s, mp_uint_t timeout_s, int
         return -1;
     }
 
+    s->has_timeout = has_timeout;
     return 0;
 }
 

cc3200/mpconfigport.h

@@ -66,6 +66,7 @@
 #define MICROPY_PY_BUILTINS_MEMORYVIEW              (1)
 #define MICROPY_PY_BUILTINS_FROZENSET               (1)
 #define MICROPY_PY_BUILTINS_EXECFILE                (1)
+#define MICROPY_PY_BUILTINS_TIMEOUTERROR            (1)
 #define MICROPY_PY_MICROPYTHON_MEM_INFO             (0)
 #define MICROPY_PY_ARRAY_SLICE_ASSIGN               (1)
 #define MICROPY_PY_COLLECTIONS_ORDEREDDICT          (1)

cc3200/qstrdefsport.h

@@ -225,6 +225,8 @@ Q(setblocking)
 Q(setsockopt)
 Q(close)
 Q(protocol)
+Q(error)
+Q(timeout)
 Q(AF_INET)
 Q(AF_INET6)
 Q(SOCK_STREAM)