nghttp: Receive ORIGIN frame

src/app_helper.cc

@@ -106,6 +106,8 @@ std::string strframetype(uint8_t type) {
     return "WINDOW_UPDATE";
   case NGHTTP2_ALTSVC:
     return "ALTSVC";
+  case NGHTTP2_ORIGIN:
+    return "ORIGIN";
   }
 
   std::string s = "extension(0x";
@@ -351,6 +353,15 @@ void print_frame(print_type ptype, const nghttp2_frame *frame) {
             static_cast<int>(altsvc->field_value_len), altsvc->field_value);
     break;
   }
+  case NGHTTP2_ORIGIN: {
+    auto origin = static_cast<nghttp2_ext_origin *>(frame->ext.payload);
+    for (size_t i = 0; i < origin->nov; ++i) {
+      auto ent = &origin->ov[i];
+      print_frame_attr_indent();
+      fprintf(outfile, "[%.*s]\n", (int)ent->origin_len, ent->origin);
+    }
+    break;
+  }
   default:
     break;
   }

src/nghttp.cc

@@ -127,6 +127,7 @@ Config::Config()
   nghttp2_option_set_peer_max_concurrent_streams(http2_option,
                                                  peer_max_concurrent_streams);
   nghttp2_option_set_builtin_recv_extension_type(http2_option, NGHTTP2_ALTSVC);
+  nghttp2_option_set_builtin_recv_extension_type(http2_option, NGHTTP2_ORIGIN);
 }
 
 Config::~Config() { nghttp2_option_del(http2_option); }