Support a user-provided string for the TLS ALPN extension.

webrtc/sdk/android/src/jni/pc/java_native_conversion.cc

 /*
  *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 325 matching lines @@
   if (enum_name == "TLS_CERT_POLICY_SECURE")
     return webrtc::PeerConnectionInterface::kTlsCertPolicySecure;
 
   if (enum_name == "TLS_CERT_POLICY_INSECURE_NO_CHECK")
     return webrtc::PeerConnectionInterface::kTlsCertPolicyInsecureNoCheck;
 
   RTC_CHECK(false) << "Unexpected TlsCertPolicy enum_name " << enum_name;
   return webrtc::PeerConnectionInterface::kTlsCertPolicySecure;
 }
 
+std::vector<std::string> JavaToStdVectorStrings(JNIEnv* jni, jobject list) {
+  std::vector<std::string> converted_list;
+  if (list != nullptr) {
+    for (jobject str : Iterable(jni, list)) {
+      converted_list.push_back(
+          JavaToStdString(jni, reinterpret_cast<jstring>(str)));
+    }
+  }
+  return converted_list;
+}
+
 void JavaToNativeIceServers(
     JNIEnv* jni,
     jobject j_ice_servers,
     webrtc::PeerConnectionInterface::IceServers* ice_servers) {
   for (jobject j_ice_server : Iterable(jni, j_ice_servers)) {
     jclass j_ice_server_class = GetObjectClass(jni, j_ice_server);
     jfieldID j_ice_server_uri_id =
         GetFieldID(jni, j_ice_server_class, "uri", "Ljava/lang/String;");
     jfieldID j_ice_server_username_id =
         GetFieldID(jni, j_ice_server_class, "username", "Ljava/lang/String;");
     jfieldID j_ice_server_password_id =
         GetFieldID(jni, j_ice_server_class, "password", "Ljava/lang/String;");
     jfieldID j_ice_server_tls_cert_policy_id =
         GetFieldID(jni, j_ice_server_class, "tlsCertPolicy",
                    "Lorg/webrtc/PeerConnection$TlsCertPolicy;");
     jobject j_ice_server_tls_cert_policy =
         GetObjectField(jni, j_ice_server, j_ice_server_tls_cert_policy_id);
     jfieldID j_ice_server_hostname_id =
         GetFieldID(jni, j_ice_server_class, "hostname", "Ljava/lang/String;");
+    jfieldID j_ice_server_tls_alpn_protocols_id = GetFieldID(
+        jni, j_ice_server_class, "tlsAlpnProtocols", "Ljava/util/List;");
     jstring uri = reinterpret_cast<jstring>(
         GetObjectField(jni, j_ice_server, j_ice_server_uri_id));
     jstring username = reinterpret_cast<jstring>(
         GetObjectField(jni, j_ice_server, j_ice_server_username_id));
     jstring password = reinterpret_cast<jstring>(
         GetObjectField(jni, j_ice_server, j_ice_server_password_id));
     webrtc::PeerConnectionInterface::TlsCertPolicy tls_cert_policy =
         JavaToNativeTlsCertPolicy(jni, j_ice_server_tls_cert_policy);
     jstring hostname = reinterpret_cast<jstring>(
         GetObjectField(jni, j_ice_server, j_ice_server_hostname_id));
+    jobject tls_alpn_protocols = GetNullableObjectField(
+        jni, j_ice_server, j_ice_server_tls_alpn_protocols_id);
     webrtc::PeerConnectionInterface::IceServer server;
     server.uri = JavaToStdString(jni, uri);
     server.username = JavaToStdString(jni, username);
     server.password = JavaToStdString(jni, password);
     server.tls_cert_policy = tls_cert_policy;
     server.hostname = JavaToStdString(jni, hostname);
+    server.tls_alpn_protocols = JavaToStdVectorStrings(jni, tls_alpn_protocols);
     ice_servers->push_back(server);
   }
 }
 
 void JavaToNativeRTCConfiguration(
     JNIEnv* jni,
     jobject j_rtc_config,
     webrtc::PeerConnectionInterface::RTCConfiguration* rtc_config) {
   jclass j_rtc_config_class = GetObjectClass(jni, j_rtc_config);
 
@@ skipping 300 matching lines @@
     }
     jboolean added = jni->CallBooleanMethod(j_codecs, codecs_add, j_codec);
     CHECK_EXCEPTION(jni) << "error during CallBooleanMethod";
     RTC_CHECK(added);
   }
 
   return j_parameters;
 }
 
 }  // namespace webrtc_jni