java.lang.NoSuchMethodError: 'okio.Buffer okio.BufferedSource.getBuffer()'

[stefanbethke]

In a large Spring Boot based application, I'm getting this error.

java.lang.NoSuchMethodError: 'okio.Buffer okio.BufferedSource.getBuffer()'
	at okhttp3.internal.connection.RealConnection.createTunnel(RealConnection.java:411)
	at okhttp3.internal.connection.RealConnection.connectTunnel(RealConnection.java:236)
	at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:177)
	at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
	at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108)
	at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88)
	at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
	at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229)
	at okhttp3.RealCall.execute(RealCall.java:81)
	at com.mailjet.client.MailjetClient.post(MailjetClient.java:131)

I've found one hit for this error, but the suggestion to update to okio.1.16.0 did not change anything.

Maven shows me these dependencies:

[INFO] \- com.mailjet:mailjet-client:jar:5.2.0:compile
[INFO]    +- com.squareup.okhttp3:okhttp:jar:3.14.9:compile
[INFO]    |  \- com.squareup.okio:okio:jar:1.15.0:compile
[INFO]    \- org.json:json:jar:20140107:compile

I notice that okhttp:3.14.9 is over two years old, the most recent current version appears to be 4.9.3. I have a suspicion that this might have something to do with it.

[stefanbethke]

It might also be worthwile to consider simply using the JDK HTTP client instead.

[szagr]

@stefanbethke , thanks for raising this issue! Sorry for the late reply. All dependencies have been updated to the latest in the 5.2.1 release. Does it resolve the issue?