Error when two requests are too close in time

[diego09310]

Hi, I'm getting this error when I make a request close after another (not always, it's a range, not inmediate and not long after it):

java.lang.IllegalStateException: Connection 192.168.1.152:43204<->35.186.224.25:443 is still allocated
    at org.apache.hc.core5.util.Asserts.check(Asserts.java:50) ~[httpcore5-5.2.2.jar:5.2.2]
    at org.apache.hc.client5.http.impl.io.BasicHttpClientConnectionManager.getConnection(BasicHttpClientConnectionManager.java:306) ~[httpclient5-5.2.1.jar:5.2.1]
...

From what I read this happens when using the BasicHttpClientConnectionManager and having more than one request open, depending on timing it will reuse the connection on create a new one.
I'm making the calls using the synchronous execute, but using spring boot so executions are probably in different threads (I also tried with async calls and got the same issue).

Is there a way to avoid this (I may be using the API wrong)? Right now I have a wrokaround with a wrapper that catches the exception and retries, but asking in case there's a better way to handle this.

Thanks

[dargmuesli]

You're on the right track. You can try to use a pooling connection manager as httpManager by building a custom SpotifyApi instance.

[diego09310]

I thought about it, for now I'll keep it with the wrapper for simplicity but in the future I may try to implement it that way. Thanks!

[dargmuesli]

Ok! Also see this current PR: #375