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[GH-ISSUE #2] [bug] JSON occasionally fails to parse #2

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opened 2026-02-28 14:28:15 +03:00 by kerem · 6 comments
kerem commented 2026-02-28 14:28:15 +03:00
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Originally created by @entriphy on GitHub (Apr 18, 2020).
Original GitHub issue: https://github.com/entriphy/sp-playcount-librespot/issues/2

Stack trace:

com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 5 path $
 at com.google.gson.JsonParser.parseReader(JsonParser.java:66)
 at xyz.gianlu.librespot.mercury.JsonMercuryRequest.instantiate(JsonMercuryRequest.java:26)
 at xyz.gianlu.librespot.mercury.MercuryClient.sendSync(MercuryClient.java:82)
 at xyz.gianlu.librespot.HTTPSServer$PlayCountHandler.handle(HTTPSServer.java:88)
 at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
 at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83)
 at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82)
 at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:675)
 at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
 at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:647)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)
Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 5 path $
 at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1564)
 at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1405)
 at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:543)
 at com.google.gson.stream.JsonReader.peek(JsonReader.java:426)
 at com.google.gson.JsonParser.parseReader(JsonParser.java:61)
 ... 12 more
Originally created by @entriphy on GitHub (Apr 18, 2020). Original GitHub issue: https://github.com/entriphy/sp-playcount-librespot/issues/2 Stack trace: ``` com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 5 path $ at com.google.gson.JsonParser.parseReader(JsonParser.java:66) at xyz.gianlu.librespot.mercury.JsonMercuryRequest.instantiate(JsonMercuryRequest.java:26) at xyz.gianlu.librespot.mercury.MercuryClient.sendSync(MercuryClient.java:82) at xyz.gianlu.librespot.HTTPSServer$PlayCountHandler.handle(HTTPSServer.java:88) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79) at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82) at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:675) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79) at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:647) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 5 path $ at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1564) at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1405) at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:543) at com.google.gson.stream.JsonReader.peek(JsonReader.java:426) at com.google.gson.JsonParser.parseReader(JsonParser.java:61) ... 12 more ```
kerem commented 2026-02-28 14:28:16 +03:00
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@slapheadted commented on GitHub (Apr 20, 2020):

What's the response code that you get back from the server for this issue @evilarceus ? Would it result in a 500? (As I mentioned in response to another issue here) I'm experiencing intermittent 500s from the public server.

<!-- gh-comment-id:616621856 --> @slapheadted commented on GitHub (Apr 20, 2020): What's the response code that you get back from the server for this issue @evilarceus ? Would it result in a 500? (As I mentioned in response to another issue here) I'm experiencing intermittent 500s from the public server.
kerem commented 2026-02-28 14:28:16 +03:00
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@entriphy commented on GitHub (Apr 20, 2020):

The status code should be 500 for this issue. If you're getting random status code 500s, it's most likely because of this issue.

<!-- gh-comment-id:616738524 --> @entriphy commented on GitHub (Apr 20, 2020): The status code should be 500 for this issue. If you're getting random status code 500s, it's most likely because of this issue.
kerem commented 2026-02-28 14:28:16 +03:00
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@annadnl commented on GitHub (Apr 29, 2020):

i'm also getting intermittent 500s on the artistInfo endpoint

2020/04/29 09:09:41 [warn] 4576#0: *1244 an upstream response is buffered to a temporary file /var/lib/nginx/tmp/proxy/1/00/0000000001 while reading upstream, client: 87.9.212.241, server: , request: "GET /artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5 HTTP/1.1", upstream: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5", host: "xxx", referrer: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5"

<!-- gh-comment-id:621098774 --> @annadnl commented on GitHub (Apr 29, 2020): i'm also getting intermittent 500s on the artistInfo endpoint `2020/04/29 09:09:41 [warn] 4576#0: *1244 an upstream response is buffered to a temporary file /var/lib/nginx/tmp/proxy/1/00/0000000001 while reading upstream, client: 87.9.212.241, server: , request: "GET /artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5 HTTP/1.1", upstream: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5", host: "xxx", referrer: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5" `
kerem commented 2026-02-28 14:28:16 +03:00
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@Stoley commented on GitHub (Apr 29, 2020):

i'm also getting intermittent 500s on the artistInfo endpoint

2020/04/29 09:09:41 [warn] 4576#0: *1244 an upstream response is buffered to a temporary file /var/lib/nginx/tmp/proxy/1/00/0000000001 while reading upstream, client: 87.9.212.241, server: , request: "GET /artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5 HTTP/1.1", upstream: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5", host: "xxx", referrer: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5"

That's a playlist

<!-- gh-comment-id:621103958 --> @Stoley commented on GitHub (Apr 29, 2020): > i'm also getting intermittent 500s on the artistInfo endpoint > > `2020/04/29 09:09:41 [warn] 4576#0: *1244 an upstream response is buffered to a temporary file /var/lib/nginx/tmp/proxy/1/00/0000000001 while reading upstream, client: 87.9.212.241, server: , request: "GET /artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5 HTTP/1.1", upstream: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5", host: "xxx", referrer: "http://xxx/artistInfo?artistid=0SfsnGyD8FpIN4U4WCkBZ5" ` That's a playlist
kerem commented 2026-02-28 14:28:16 +03:00
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@annadnl commented on GitHub (Apr 29, 2020):

it is not, it's armin van buuren :-)

spotify:artist:0SfsnGyD8FpIN4U4WCkBZ5

but you are correct, if you search for "0SfsnGyD8FpIN4U4WCkBZ5" on the platform it does return a playlist. could this be a hint towards where the problem comes from? that a playlist and an artist have the same handle?

<!-- gh-comment-id:621106980 --> @annadnl commented on GitHub (Apr 29, 2020): it is not, it's armin van buuren :-) `spotify:artist:0SfsnGyD8FpIN4U4WCkBZ5` but you are correct, if you search for "0SfsnGyD8FpIN4U4WCkBZ5" on the platform it does return a playlist. could this be a hint towards where the problem comes from? that a playlist and an artist have the same handle?
kerem commented 2026-02-28 14:28:16 +03:00
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@Stoley commented on GitHub (Apr 29, 2020):

ah you're right, never seen that before

<!-- gh-comment-id:621108523 --> @Stoley commented on GitHub (Apr 29, 2020): ah you're right, never seen that before
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