On 15/05/21 5:32 pm, Jaikiran Pai wrote:
On 15/05/21 5:13 pm, Jaikiran Pai wrote:
Hello Krzysztof,
On 15/05/21 1:07 am, Krzysztof K. wrote:
Hi,
I have an issue using http client communicating with servers that
most probably are on GCP (I see header: "via: 1.1 google").
I get "java.io.IOException: Received RST_STREAM: Protocol error".
...
But I'm on JDK 16 (build 16+35-2229) and I get this error when
connecting to a website when I use the header "TE: Trailers" (needs
first letter capitalized).
When I remove this header everything works, if I switch to HTTP 1.1
(with that header) it also works.
Here is a minimal reproducible example:
HttpClient.newBuilder()
.build()
.send(
HttpRequest.newBuilder()
.header("TE", "Trailers")
IMO, this is more of an application issue than the JDK. In HTTP/2 the
TE header[1] is expected to only have the value "trailers" (case
sensitive) as noted here[2]. If you change your code to use
"trailers" instead of "Trailers" it works (as you seem to have
noticed). As for why it works in Firefox or curl, I'm not sure -
perhaps they have special handling of this specific header to lower
case its value if it's "Trailers"?
A quick check of the curl source code[1] suggests that it does indeed
do special handling of this TE request param[2].
I meant request header.
-Jaikiran
