diff --git a/src/os/unix/ngx_socket.h b/src/os/unix/ngx_socket.h
new file mode 100644
index 0000000..18c07f9
--- /dev/null
+++ b/src/os/unix/ngx_socket.h
@@ -0,0 +1,16 @@
+#ifndef _NGX_SOCKET_H_INCLUDED_
+#define _NGX_SOCKET_H_INCLUDED_
+
+
+#include <ngx_config.h>
+
+
+typedef int  ngx_socket_t;
+
+#define ngx_init_sockets
+
+#define ngx_nonblocking(s)  fcntl(s, F_SETFL, O_NONBLOCK)
+#define ngx_nonblocking_n   "fcntl (O_NONBLOCK)"
+
+
+#endif /* _NGX_SOCKET_H_INCLUDED_ */