default value of connect timeout

Signed-off-by: Dan Zhang <danzh@google.com>

mobile/library/cc/engine_builder.h

@@ -144,7 +144,7 @@ class EngineBuilder {
   std::unique_ptr<EngineCallbacks> callbacks_;
   std::unique_ptr<EnvoyEventTracker> event_tracker_{nullptr};
 
-  int connect_timeout_seconds_ = 30;
+  int connect_timeout_seconds_ = 10;
   int dns_refresh_seconds_ = 60;
   int dns_failure_refresh_seconds_base_ = 2;
   int dns_failure_refresh_seconds_max_ = 10;

mobile/library/java/org/chromium/net/impl/NativeCronvoyEngineBuilderImpl.java

@@ -38,7 +38,7 @@ public class NativeCronvoyEngineBuilderImpl extends CronvoyEngineBuilderImpl {
   // TODO(refactor) move unshared variables into their specific methods.
   private final List<EnvoyNativeFilterConfig> nativeFilterChain = new ArrayList<>();
   private final EnvoyEventTracker mEnvoyEventTracker = null;
-  private final int mConnectTimeoutSeconds = 30;
+  private int mConnectTimeoutSeconds = 10;
   private final int mDnsRefreshSeconds = 60;
   private final int mDnsFailureRefreshSecondsBase = 2;
   private final int mDnsFailureRefreshSecondsMax = 10;
@@ -234,6 +234,11 @@ public NativeCronvoyEngineBuilderImpl setUpstreamTlsSni(String sni) {
     return this;
   }
 
+  public NativeCronvoyEngineBuilderImpl setConnectTimeoutSeconds(int connect_timeout) {
+    mConnectTimeoutSeconds = connect_timeout;
+    return this;
+  }
+
   /**
    * Indicates to skip the TLS certificate verification.
    *

mobile/library/kotlin/io/envoyproxy/envoymobile/EngineBuilder.kt

@@ -26,7 +26,7 @@ open class EngineBuilder() {
     )
   }
   private var logLevel = LogLevel.INFO
-  private var connectTimeoutSeconds = 30
+  private var connectTimeoutSeconds = 10
   private var dnsRefreshSeconds = 60
   private var dnsFailureRefreshSecondsBase = 2
   private var dnsFailureRefreshSecondsMax = 10