Fix the windows socket issue with MinGW

src/local.c

@@ -51,6 +51,9 @@
 
 #ifdef __MINGW32__
 #include "win32.h"
+#define __ev_io_init(a, b, c, d) ev_io_init(a, b, _open_osfhandle(c, 0), d)
+#else
+#define __ev_io_init(a, b, c, d) ev_io_init(a, b, c, d)
 #endif
 
 #include "netutils.h"
@@ -669,8 +672,8 @@ new_remote(int fd, int timeout)
     remote->recv_ctx->remote    = remote;
     remote->send_ctx->remote    = remote;
 
-    ev_io_init(&remote->recv_ctx->io, remote_recv_cb, fd, EV_READ);
-    ev_io_init(&remote->send_ctx->io, remote_send_cb, fd, EV_WRITE);
+    __ev_io_init(&remote->recv_ctx->io, remote_recv_cb, fd, EV_READ);
+    __ev_io_init(&remote->send_ctx->io, remote_send_cb, fd, EV_WRITE);
     ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb,
                   min(MAX_CONNECT_TIMEOUT, timeout), 0);
     ev_timer_init(&remote->recv_ctx->watcher, remote_timeout_cb,
@@ -733,8 +736,8 @@ new_server(int fd)
         memset(server->obfs, 0, sizeof(obfs_t));
     }
 
-    ev_io_init(&server->recv_ctx->io, server_recv_cb, fd, EV_READ);
-    ev_io_init(&server->send_ctx->io, server_send_cb, fd, EV_WRITE);
+    __ev_io_init(&server->recv_ctx->io, server_recv_cb, fd, EV_READ);
+    __ev_io_init(&server->send_ctx->io, server_send_cb, fd, EV_WRITE);
 
     cork_dllist_add(&connections, &server->entries);
 
@@ -1214,11 +1217,11 @@ main(int argc, char **argv)
     ev_signal_start(EV_DEFAULT, &sigterm_watcher);
 #endif
 
-    ev_timer parent_watcher;
 #ifndef __MINGW32__
+    ev_timer parent_watcher;
     ev_timer_init(&parent_watcher, parent_watcher_cb, 0, UPDATE_INTERVAL);
-#endif
     ev_timer_start(EV_DEFAULT, &parent_watcher);
+#endif
 
     struct ev_loop *loop = EV_DEFAULT;
 
@@ -1239,7 +1242,7 @@ main(int argc, char **argv)
 
     listen_ctx.fd = listenfd;
 
-    ev_io_init(&listen_ctx.io, accept_cb, listenfd, EV_READ);
+    __ev_io_init(&listen_ctx.io, accept_cb, listenfd, EV_READ);
     ev_io_start(loop, &listen_ctx.io);
 
 #ifdef HAVE_LAUNCHD