[UNDERTOW-2311] Introducing Http2Channel.DEFAULT_MAX_CONCURRENT_STREAMS

Author: ropalka

core/src/main/java/io/undertow/UndertowOptions.java

@@ -267,7 +267,7 @@ public class UndertowOptions {
     public static final Option<Boolean> HTTP2_SETTINGS_ENABLE_PUSH = Option.simple(UndertowOptions.class, "HTTP2_SETTINGS_ENABLE_PUSH", Boolean.class);
 
     /**
-     * The maximum number of concurrent
+     * The maximum number of concurrent http2 streams.
      */
     public static final Option<Integer> HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = Option.simple(UndertowOptions.class, "HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS", Integer.class);
 

core/src/main/java/io/undertow/protocols/http2/Http2Channel.java

@@ -121,6 +121,8 @@ public class Http2Channel extends AbstractFramedChannel<Http2Channel, AbstractHt
 
     public static final int DEFAULT_INITIAL_WINDOW_SIZE = 65535;
 
+    public static final int DEFAULT_MAX_CONCURRENT_STREAMS = -1;
+
     static final byte[] PREFACE_BYTES = {
             0x50, 0x52, 0x49, 0x20, 0x2a, 0x20, 0x48, 0x54,
             0x54, 0x50, 0x2f, 0x32, 0x2e, 0x30, 0x0d, 0x0a,
@@ -214,7 +216,7 @@ public Http2Channel(StreamConnection connectedStreamChannel, String protocol, By
         pushEnabled = settings.get(UndertowOptions.HTTP2_SETTINGS_ENABLE_PUSH, true);
         this.initialReceiveWindowSize = settings.get(UndertowOptions.HTTP2_SETTINGS_INITIAL_WINDOW_SIZE, DEFAULT_INITIAL_WINDOW_SIZE);
         this.receiveWindowSize = initialReceiveWindowSize;
-        this.receiveMaxConcurrentStreams = settings.get(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, -1);
+        this.receiveMaxConcurrentStreams = settings.get(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, DEFAULT_MAX_CONCURRENT_STREAMS);
 
         this.protocol = protocol == null ? Http2OpenListener.HTTP2 : protocol;
         this.maxHeaders = settings.get(UndertowOptions.MAX_HEADERS, clientSide ? -1 : UndertowOptions.DEFAULT_MAX_HEADERS);