Send extra options with OPTIONS

CL: Send extra options with OPTIONS. Integrate https://github.com/cesanta/mongoose/pull/657

PUBLISHED_FROM=6ee609a92febd8d908f7713f94fb73657443a09a

mongoose.c

@@ -6563,9 +6563,9 @@ void mg_http_handler(struct mg_connection *nc, int ev,
         if (io->len > 0 &&
             (req_len = mg_parse_http(io->buf, io->len, hm, is_req)) > 0) {
       /*
-      * For HTTP messages without Content-Length, always send HTTP message
-      * before MG_EV_CLOSE message.
-      */
+       * For HTTP messages without Content-Length, always send HTTP message
+       * before MG_EV_CLOSE message.
+       */
       int ev2 = is_req ? MG_EV_HTTP_REQUEST : MG_EV_HTTP_REPLY;
       hm->message.len = io->len;
       hm->body.len = io->buf + io->len - hm->body.p;
@@ -8360,9 +8360,11 @@ void mg_http_send_digest_auth_request(struct mg_connection *c,
             domain, (unsigned long) mg_time());
 }
 
-static void mg_http_send_options(struct mg_connection *nc) {
+static void mg_http_send_options(struct mg_connection *nc,
+                                 struct mg_serve_http_opts *opts) {
+  mg_send_response_line(nc, 200, opts->extra_headers);
   mg_printf(nc, "%s",
-            "HTTP/1.1 200 OK\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS"
+            "Allow: GET, POST, HEAD, CONNECT, OPTIONS"
 #if MG_ENABLE_HTTP_WEBDAV
             ", MKCOL, PUT, DELETE, PROPFIND, MOVE\r\nDAV: 1,2"
 #endif
@@ -8469,7 +8471,7 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
 #endif
 #endif /* MG_ENABLE_HTTP_WEBDAV */
   } else if (!mg_vcmp(&hm->method, "OPTIONS")) {
-    mg_http_send_options(nc);
+    mg_http_send_options(nc, opts);
   } else if (is_directory && index_file == NULL) {
 #if MG_ENABLE_DIRECTORY_LISTING
     if (strcmp(opts->enable_directory_listing, "yes") == 0) {

src/mg_http.c

@@ -759,9 +759,9 @@ void mg_http_handler(struct mg_connection *nc, int ev,
         if (io->len > 0 &&
             (req_len = mg_parse_http(io->buf, io->len, hm, is_req)) > 0) {
       /*
-      * For HTTP messages without Content-Length, always send HTTP message
-      * before MG_EV_CLOSE message.
-      */
+       * For HTTP messages without Content-Length, always send HTTP message
+       * before MG_EV_CLOSE message.
+       */
       int ev2 = is_req ? MG_EV_HTTP_REQUEST : MG_EV_HTTP_REPLY;
       hm->message.len = io->len;
       hm->body.len = io->buf + io->len - hm->body.p;
@@ -2556,9 +2556,11 @@ void mg_http_send_digest_auth_request(struct mg_connection *c,
             domain, (unsigned long) mg_time());
 }
 
-static void mg_http_send_options(struct mg_connection *nc) {
+static void mg_http_send_options(struct mg_connection *nc,
+                                 struct mg_serve_http_opts *opts) {
+  mg_send_response_line(nc, 200, opts->extra_headers);
   mg_printf(nc, "%s",
-            "HTTP/1.1 200 OK\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS"
+            "Allow: GET, POST, HEAD, CONNECT, OPTIONS"
 #if MG_ENABLE_HTTP_WEBDAV
             ", MKCOL, PUT, DELETE, PROPFIND, MOVE\r\nDAV: 1,2"
 #endif
@@ -2665,7 +2667,7 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
 #endif
 #endif /* MG_ENABLE_HTTP_WEBDAV */
   } else if (!mg_vcmp(&hm->method, "OPTIONS")) {
-    mg_http_send_options(nc);
+    mg_http_send_options(nc, opts);
   } else if (is_directory && index_file == NULL) {
 #if MG_ENABLE_DIRECTORY_LISTING
     if (strcmp(opts->enable_directory_listing, "yes") == 0) {

test/unit_test.c

@@ -15,12 +15,12 @@
  * license, as set out in <https://www.cesanta.com/license>.
  */
 
-#include "mongoose.h"
-#include "src/mg_internal.h"
 #include "unit_test.h"
+#include "common/cs_md5.h"
 #include "common/test_main.h"
 #include "common/test_util.h"
-#include "common/cs_md5.h"
+#include "mongoose.h"
+#include "src/mg_internal.h"
 
 #if defined(__STDC_VERSION__) && __STDC_VERSION__ < 199901L && !defined(WIN32)
 #define __func__ ""
@@ -2011,7 +2011,8 @@ static const char *test_http(void) {
   char buf[50] = "", status[100] = "", mime1[20] = "", mime2[100] = "";
   char opt_buf[1024] = "";
   const char *opt_answer =
-      "HTTP/1.1 200 OK\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS, MKCOL, "
+      "HTTP/1.1 200 OK\r\nServer: Mongoose/" MG_VERSION
+      "\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS, MKCOL, "
       "PUT, DELETE, PROPFIND, MOVE";
   char url[1000];