I am writing tests which run OkHttp/Retrofit requests against a MockWebServer. Among other things I'm testing timeouts. Here I noticed, that some of my timeout tests do not produce the same kind of exception all the time:
While the exception thrown is always a SocketTimeoutException, the exception message differs between two possibilities. Sometimes I get
"timeout", sometimes"Read timed out".
There seems to be no clear pattern (it's the very same test which sometimes produces one or the other of these exception messages).
I assume that different constellations/causes lead to the differing messages... Can somebody explain to me the difference between these two cases?
Here are the corresponding stack traces:
"Read timed out"
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:170)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at okio.Okio$2.read(Okio.java:140)
at okio.AsyncTimeout$2.read(AsyncTimeout.java:238)
at okio.RealBufferedSource.read(RealBufferedSource.java:45)
at okhttp3.internal.http.Http1xStream$FixedLengthSource.read(Http1xStream.java:381)
at okio.RealBufferedSource.read(RealBufferedSource.java:45)
at okio.ForwardingSource.read(ForwardingSource.java:35)
at retrofit2.OkHttpCall$ExceptionCatchingRequestBody$1.read(OkHttpCall.java:279)
at okio.RealBufferedSource$1.read(RealBufferedSource.java:386)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at com.google.gson.stream.JsonReader.fillBuffer(JsonReader.java:1287)
at com.google.gson.stream.JsonReader.nextQuotedValue(JsonReader.java:1016)
at com.google.gson.stream.JsonReader.nextName(JsonReader.java:787)
at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:739)
at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:714)
at com.google.gson.internal.bind.TypeAdapters$35$1.read(TypeAdapters.java:910)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25)
at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:117)
at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211)
at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:106)
"timeout"
Caused by: java.net.SocketTimeoutException: timeout
at okio.Okio$3.newTimeoutException(Okio.java:212)
at okio.AsyncTimeout.exit(AsyncTimeout.java:288)
at okio.AsyncTimeout$2.read(AsyncTimeout.java:242)
at okio.RealBufferedSource.read(RealBufferedSource.java:45)
at okhttp3.internal.http.Http1xStream$FixedLengthSource.read(Http1xStream.java:381)
at okio.RealBufferedSource.read(RealBufferedSource.java:45)
at okio.ForwardingSource.read(ForwardingSource.java:35)
at retrofit2.OkHttpCall$ExceptionCatchingRequestBody$1.read(OkHttpCall.java:279)
at okio.RealBufferedSource$1.read(RealBufferedSource.java:386)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at com.google.gson.stream.JsonReader.fillBuffer(JsonReader.java:1287)
at com.google.gson.stream.JsonReader.nextQuotedValue(JsonReader.java:1016)
at com.google.gson.stream.JsonReader.nextName(JsonReader.java:787)
at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:739)
at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:714)
at com.google.gson.internal.bind.TypeAdapters$35$1.read(TypeAdapters.java:910)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25)
at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:117)
at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211)
at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:106)
