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Suddenly my app started to crash enormously. I checked Crashlytics report but it doesn't tell me much. This is what it says, hopefully someone could give me a hint if had same/similar problem..

Crashlytics report

user8789149
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  • Paste the raw crash log. May be then people could help. – Sivakumar S Jan 04 '18 at 08:59
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    StringIndexOutOfBoundsException -- if the beginIndex is negative, or endIndex is larger than the length of this String object, or beginIndex is larger than endIndex. – Rohit5k2 Jan 04 '18 at 09:00
  • You are trying to get a string from index 0 to -2, which is not possible. Check your logic and fix the end index. – Rohit5k2 Jan 04 '18 at 09:02
  • @Rohit5k2 but how can I detect where it's happening? ..This ServiceInfoImpl class is generic and it can't be modified – user8789149 Jan 04 '18 at 09:04
  • I think @user8789149 knows what is `StringIndexOutOfBoundsException` the problem is that were should the exception be fixed. Such exceptions with ambiguous stack traces happen very often, unfortunately :( – Misha Akopov Jan 04 '18 at 09:12
  • Yep :/ I have like 500 crashes on only 2 users.. – user8789149 Jan 04 '18 at 09:26

1 Answers1

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This seems to be related to a known jmDNS bug that was supposedly fixed a long time ago1:

Apparently, the problem is triggered by lookup of malformed DNS names: see last email in discussion thread.

I suggest that you add some diagnostics to your app to find out what name your code is attempting to lookup.

1 - I have my doubts that it was actually fixed ... based on the discussion thread.

Stephen C
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