Improve network reliability.

app/src/main/java/org/thoughtcrime/securesms/push/DomainFrontingDigicertTrustStore.java

@@ -0,0 +1,28 @@
+package org.thoughtcrime.securesms.push;
+
+import android.content.Context;
+
+import org.thoughtcrime.securesms.R;
+import org.whispersystems.signalservice.api.push.TrustStore;
+
+import java.io.InputStream;
+
+public class DomainFrontingDigicertTrustStore implements TrustStore {
+
+  private final Context context;
+
+  public DomainFrontingDigicertTrustStore(Context context) {
+    this.context = context.getApplicationContext();
+  }
+
+  @Override
+  public InputStream getKeyStoreInputStream() {
+    return context.getResources().openRawResource(R.raw.censorship_digicert);
+  }
+
+  @Override
+  public String getKeyStorePassword() {
+    return "whisper";
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/push/SignalServiceNetworkAccess.java

@@ -3,6 +3,8 @@
 
 import android.content.Context;
 
+import com.annimon.stream.Stream;
+
 import androidx.annotation.Nullable;
 
 import org.thoughtcrime.securesms.BuildConfig;
@@ -30,6 +32,8 @@
 import java.util.List;
 import java.util.Map;
 
+import javax.net.ssl.SSLContext;
+
 import okhttp3.CipherSuite;
 import okhttp3.ConnectionSpec;
 import okhttp3.Dns;
@@ -47,8 +51,15 @@ public class SignalServiceNetworkAccess {
   private static final String COUNTRY_CODE_UAE   = "+971";
   private static final String COUNTRY_CODE_OMAN  = "+968";
   private static final String COUNTRY_CODE_QATAR = "+974";
+  private static final String COUNTRY_CODE_IRAN  = "+98";
 
   private static final String SERVICE_REFLECTOR_HOST = "europe-west1-signal-cdn-reflector.cloudfunctions.net";
+  private static final String SERVICE_FASTLY_HOST    = "textsecure-service.whispersystems.org.global.prod.fastly.net";
+  private static final String STORAGE_FASTLY_HOST    = "storage.signal.org.global.prod.fastly.net";
+  private static final String CDN_FASTLY_HOST        = "cdn.signal.org.global.prod.fastly.net";
+  private static final String CDN2_FASTLY_HOST       = "cdn2.signal.org.global.prod.fastly.net";
+  private static final String DIRECTORY_FASTLY_HOST  = "api.directory.signal.org.global.prod.fastly.net";
+  private static final String KBS_FASTLY_HOST        = "api.backup.signal.org.global.prod.fastly.net";
 
   private static final ConnectionSpec GMAPS_CONNECTION_SPEC = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
       .tlsVersions(TlsVersion.TLS_1_2)
@@ -97,6 +108,7 @@ public class SignalServiceNetworkAccess {
       .supportsTlsExtensions(true)
       .build();
 
+  private static final ConnectionSpec APP_CONNECTION_SPEC = ConnectionSpec.MODERN_TLS;
 
   private final Map<String, SignalServiceConfiguration> censorshipConfiguration;
   private final String[]                                censoredCountries;
@@ -145,6 +157,7 @@ public SignalServiceNetworkAccess(Context context) {
     final SignalContactDiscoveryUrl omanGoogleDiscovery     = new SignalContactDiscoveryUrl("https://www.google.com.om/directory", SERVICE_REFLECTOR_HOST, trustStore, GMAIL_CONNECTION_SPEC);
     final SignalContactDiscoveryUrl qatarGoogleDiscovery    = new SignalContactDiscoveryUrl("https://www.google.com.qa/directory", SERVICE_REFLECTOR_HOST, trustStore, GMAIL_CONNECTION_SPEC);
 
+
     final SignalKeyBackupServiceUrl baseGoogleKbs     = new SignalKeyBackupServiceUrl("https://www.google.com/backup", SERVICE_REFLECTOR_HOST, trustStore, GMAIL_CONNECTION_SPEC);
     final SignalKeyBackupServiceUrl baseAndroidKbs    = new SignalKeyBackupServiceUrl("https://android.clients.google.com/backup", SERVICE_REFLECTOR_HOST, trustStore, PLAY_CONNECTION_SPEC);
     final SignalKeyBackupServiceUrl mapsOneAndroidKbs = new SignalKeyBackupServiceUrl("https://clients3.google.com/backup", SERVICE_REFLECTOR_HOST, trustStore, GMAPS_CONNECTION_SPEC);
@@ -165,6 +178,8 @@ public SignalServiceNetworkAccess(Context context) {
     final SignalStorageUrl omanGoogleStorage     = new SignalStorageUrl("https://www.google.com.om/storage", SERVICE_REFLECTOR_HOST, trustStore, GMAIL_CONNECTION_SPEC);
     final SignalStorageUrl qatarGoogleStorage    = new SignalStorageUrl("https://www.google.com.qa/storage", SERVICE_REFLECTOR_HOST, trustStore, GMAIL_CONNECTION_SPEC);
 
+    final String[] fastUrls = {"https://cdn.sstatic.net", "https://github.githubassets.com", "https://pinterest.com", "https://open.scdn.co", "https://www.redditstatic.com"};
+
     final List<Interceptor> interceptors = Arrays.asList(new StandardUserAgentInterceptor(), new RemoteDeprecationDetectorInterceptor(), new DeprecatedClientPreventionInterceptor());
     final Optional<Dns>     dns          = Optional.of(DNS);
 
@@ -177,6 +192,7 @@ public SignalServiceNetworkAccess(Context context) {
     }
 
     this.censorshipConfiguration = new HashMap<String, SignalServiceConfiguration>() {{
+
       put(COUNTRY_CODE_EGYPT, new SignalServiceConfiguration(new SignalServiceUrl[] {egyptGoogleService, baseGoogleService, baseAndroidService, mapsOneAndroidService, mapsTwoAndroidService, mailAndroidService},
                                                              makeSignalCdnUrlMapFor(new SignalCdnUrl[] {egyptGoogleCdn, baseAndroidCdn, baseGoogleCdn, mapsOneAndroidCdn, mapsTwoAndroidCdn, mailAndroidCdn, mailAndroidCdn},
                                                                                     new SignalCdnUrl[] {egyptGoogleCdn2, baseAndroidCdn2, baseGoogleCdn2, mapsOneAndroidCdn2, mapsTwoAndroidCdn2, mailAndroidCdn2, mailAndroidCdn2}),
@@ -221,6 +237,17 @@ public SignalServiceNetworkAccess(Context context) {
                                                              dns,
                                                              Optional.absent(),
                                                              zkGroupServerPublicParams));
+
+      put(COUNTRY_CODE_IRAN, new SignalServiceConfiguration(Stream.of(fastUrls).map(url -> new SignalServiceUrl(url, SERVICE_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalServiceUrl[]::new),
+                                                            makeSignalCdnUrlMapFor(Stream.of(fastUrls).map(url -> new SignalCdnUrl(url, CDN_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalCdnUrl[]::new),
+                                                                                   Stream.of(fastUrls).map(url -> new SignalCdnUrl(url, CDN2_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalCdnUrl[]::new)),
+                                                            Stream.of(fastUrls).map(url -> new SignalContactDiscoveryUrl(url, DIRECTORY_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalContactDiscoveryUrl[]::new),
+                                                            Stream.of(fastUrls).map(url -> new SignalKeyBackupServiceUrl(url, KBS_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalKeyBackupServiceUrl[]::new),
+                                                            Stream.of(fastUrls).map(url -> new SignalStorageUrl(url, STORAGE_FASTLY_HOST, new DomainFrontingDigicertTrustStore(context), APP_CONNECTION_SPEC)).toArray(SignalStorageUrl[]::new),
+                                                            interceptors,
+                                                            dns,
+                                                            Optional.absent(),
+                                                            zkGroupServerPublicParams));
     }};
 
     this.uncensoredConfiguration = new SignalServiceConfiguration(new SignalServiceUrl[] {new SignalServiceUrl(BuildConfig.SIGNAL_URL, new SignalServiceTrustStore(context))},
@@ -248,7 +275,7 @@ public SignalServiceConfiguration getConfiguration(@Nullable String localNumber)
     }
 
     if (SignalStore.internalValues().forcedCensorship()) {
-      return this.censorshipConfiguration.get(COUNTRY_CODE_QATAR);
+      return this.censorshipConfiguration.get(COUNTRY_CODE_IRAN);
     }
 
     for (String censoredRegion : this.censoredCountries) {