JNR/UnixSocket connect does not release?

[mjs8002]

Jetty version(s)
9.4.43.v20210629
Java version/vendor (use: java -version)
1.8
OS type/version
linux
Description
Do not report security issues here! See Jetty Security Reports.
we use HttpClientTransportOverUnixSockets
send request such as ：
HttpClientTransportOverUnixSockets transport = new HttpClientTransportOverUnixSockets(getSocketPath());
clientUds = new HttpClient(transport, null);
transport.setHttpClient(clientUds);
send：
...
request = client.newRequest(servicePath);
...
FutureResponseListener listener = new FutureResponseListener(request, bodysize);
request.send(listener);
ContentResponse response = listener.get(timeout, TimeUnit.MILLISECONDS);
Map<String, String> rspMap = new HashMap<String, String>();
rspMap.put("contentEncoding", response.getEncoding());
rspMap.put("contentType", response.getMediaType());
rspMap.put("streamAsString", response.getContentAsString());
return buildRestfulResponse(response.getStatus(), response.getHeaders(), response.getContent(), rspMap);
however we find in HttpDestination we debug :

in the connectionpool connect timeout but canot ralease when the pool is fulled we canot send any request

How to reproduce?

[mjs8002]

we find the warn in log

[sbordet]

Support for Unix-Domain sockets via jetty-unixsocket and related modules is experimental and deprecated (see #7109).

I recommend that you switch to Java 16 or later and use OpenJDK Unix-Domain support, which is supported in Jetty 10 via the jetty-unixdomain modules.

[joakime]

@sbordet what's the OpenJDK Unix-Domain replacement for HttpClient's HttpClientTransportOverUnixSockets?

[mjs8002]

Support for Unix-Domain sockets via jetty-unixsocket and related modules is experimental and deprecated (see #7109).

I recommend that you switch to Java 16 or later and use OpenJDK Unix-Domain support, which is supported in Jetty 10 via the jetty-unixdomain modules.

@sbordet Is there a good solution on jetty 9?

[sbordet]

Unfortunately no, JNR is not stable enough and now that support for Unix-Domain landed in the JDK I don't think we will try and chase down bugs in JNR.

Note that using Jetty 10's HttpClient is probably just a drop in replacement for Jetty 9's HttpClient, so I recommend that you upgrade - you will probably have to change very little in your client application.

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