HttpComponents roadmap

HttpAsyncClient 4.1 development branch

1. Upgrade to Java 1.6 (DONE)
   
2. Limited support for request pipelining HTTPASYNC-8 (DONE, REQUIRES TESTING)
   

HttpCore / HttpClient 4.5 development branch

HttpCore / HttpClient 5.0 development branch

1. Support for HTTP/1.1 spec (RFC 7230 and related)
   
2. Per request transport stats (related to JMeter) HTTPCLIENT-1081
   
3. Completely overhaul GSS-API-based authentication backend HTTPCLIENT-1625 (design notes)
   
4. Experimental support for HTTP/2
   

in scope

1. • plain transport (no TLS)
     
   • stream multiplexing

1. • message push (a Stream that was Promised)
     

out of scope

1. • implementation with blocking I/O
     
   • (PRIORITY) stream prioritization and dependencies
     
   • (WINDOW_UPDATE) flow Control
     
   • TLS requirements