Unit application library.

Library now used in all language modules.
Old 'nxt_app_*' code removed.

See src/test/nxt_unit_app_test.c for usage sample.

src/nxt_unit_request.h

@@ -0,0 +1,48 @@
+
+/*
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifndef _NXT_UNIT_REQUEST_H_INCLUDED_
+#define _NXT_UNIT_REQUEST_H_INCLUDED_
+
+
+#include <inttypes.h>
+
+#include "nxt_unit_sptr.h"
+#include "nxt_unit_field.h"
+
+#define NXT_UNIT_NONE_FIELD  0xFFFFFFFFU
+
+struct nxt_unit_request_s {
+    uint8_t               method_length;
+    uint8_t               version_length;
+    uint8_t               remote_length;
+    uint8_t               local_length;
+    uint32_t              target_length;
+    uint32_t              path_length;
+    uint32_t              query_length;
+    uint32_t              fields_count;
+
+    uint32_t              host_field;
+    uint32_t              content_length_field;
+    uint32_t              content_type_field;
+    uint32_t              cookie_field;
+
+    uint64_t              content_length;
+
+    nxt_unit_sptr_t       method;
+    nxt_unit_sptr_t       version;
+    nxt_unit_sptr_t       remote;
+    nxt_unit_sptr_t       local;
+    nxt_unit_sptr_t       target;
+    nxt_unit_sptr_t       path;
+    nxt_unit_sptr_t       query;
+    nxt_unit_sptr_t       preread_content;
+
+    nxt_unit_field_t      fields[];
+};
+
+
+#endif /* _NXT_UNIT_REQUEST_H_INCLUDED_ */
+