extmod/modlwip: lwip_tcp_receive: Properly map lwIP error to POSIX errno.

pfalcon · pfalcon · commit 0779409d0da1 · 2016-03-12T11:42:15.000+07:00
diff --git a/extmod/modlwip.c b/extmod/modlwip.c
@@ -396,7 +396,8 @@ STATIC mp_uint_t lwip_tcp_receive(lwip_socket_obj_t *socket, byte *buf, mp_uint_
                 return 0;
             }
         } else if (socket->state != STATE_CONNECTED) {
-            *_errno = -socket->state;
+            assert(socket->state < 0);
+            *_errno = error_lookup_table[-socket->state];
             return -1;
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -396,7 +396,8 @@ STATIC mp_uint_t lwip_tcp_receive(lwip_socket_obj_t socket, byte buf, mp_uint_`
`396`	`396`	`return 0;`
`397`	`397`	`}`
`398`	`398`	`} else if (socket->state != STATE_CONNECTED) {`
`399`		`- *_errno = -socket->state;`
	`399`	`+ assert(socket->state < 0);`
	`400`	`+ *_errno = error_lookup_table[-socket->state];`
`400`	`401`	`return -1;`
`401`	`402`	`}`
`402`	`403`	`}`