| Hi Thanks Oleg for the answer on the possible logging options for client5. I tried different setup to find a solution to my present problem, but without seeing light. I’m trying to setup a connection to a http2 server, using https and a proxy (which can do only HTTP1). Thus, the CONNECT operation to setup the SSL Tunnel should use http1 , then the traffic going through the tunnel first negociate the protocol, and then use http2 if available. It’s what I understood from the output of curl 7.59.0 compiled with http2 support. (I can provide the traces of my tests if necessary) I’m using Java 9 as recommended in a previous exchange, in order to have ALPN. First question : is it possible right now with httpclient5 ? The tests I have done while forcing usage of http2 : using .setVersionPolicy(HttpVersionPolicy.FORCE_HTTP_2), leads to AsyncRetryExec:90 - I/O exception (org.apache.hc.core5.http2.H2ConnectionException) caught when processing request to {tls}->http://94.23.118.210:80->https://korben.info:443: Frame size exceeds maximum It seems quite logical : the client is trying to speak http2 to the proxy which is answering with http1. But the same code using .setVersionPolicy(HttpVersionPolicy.NEGOTIATE), leads to : Exception in thread "main" java.util.concurrent.ExecutionException: org.apache.hc.core5.http.ParseException: Invalid protocol version; error at offset 0: <ÿÿÿÿ> Is there something I’m doing wrong ? The code for the last test is attached to this mail. I can provide the traces for the different tests if necessary. regards remyA |
testHTTP2Korben.java
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