The initial value for the directional parameter SETTINGS_MAX_CONCURRENT_STREAMS, in the direction from the server to the client, max concurrent client-initiated streams, is incorrectly limited to 100, when there should be no initial limit. Note, the client retains its, configurable, limit of 100 server-initiated streams..
From section 6.5.2. Defined SETTINGS Parameters: SETTINGS_MAX_CONCURRENT_STREAMS (0x3): Indicates the maximum number of concurrent streams that the sender will allow. This limit is directional: it applies to the number of streams that the sender permits the receiver to create. *** Initially, there is no limit to this value***. It is recommended that this value be no smaller than 100, so as to not unnecessarily limit parallelism. … https://bugs.openjdk.java.net/browse/JDK-8207959 http://cr.openjdk.java.net/~chegar/8207959/webrev.00/ A few methods have been renamed in the webrev, to improve readability. -Chris.