My Spring Boot uses okhttp3 to send HTTP requests as a client. I have no control over the servers. (But I can ask server team to change the settings if needs be.)
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.10.0</version>
</dependency>
Service code
package ...;
import okhttp3.*;
import okhttp3.logging.HttpLoggingInterceptor;
import .springframework.stereotype.Service;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
@Service
public class OkHttpClientService {
private final OkHttpClient client;
private static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
public OkHttpClientService() {
this.client = new OkHttpClient.Builder()
.retryOnConnectionFailure(false)
.connectTimeout(5, TimeUnit.SECONDS)
.readTimeout(5, TimeUnit.SECONDS)
.connectionPool(new ConnectionPool(5, 300, TimeUnit.SECONDS))
.build();
}
public String postRequest(String jsonBody) throws IOException {
RequestBody body = RequestBody.create(JSON, jsonBody);
Request request = new Request.Builder()
.url(";)
.post(body)
.addHeader("Content-Type", "application/json")
.build();
try (Response response = client.newCall(request).execute()) {
return response.body() != null ? response.body().string() : "No response";
}
}
}
Most of the requests are sent successfully. But I get intermittent exceptions. I could not reproduce the exceptions below.
- javax.ssl.SSLException: Socket closed
java.SocketTimeoutException: timeout
at okio.Okio$4.newTimeoutException(Okio.java:232)
at okio.AsyncTimeout.exit(AsyncTimeout.java:285)
at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)
at okio.RealBufferedSource.indexOf(RealBufferedSource.java:355)
at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:227)
at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:215)
at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at com.foo.fooService.sendRequest(FooService.java:XXX)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: javax.ssl.SSLException: Socket closed
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:127)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:326)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:269)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264)
at java.base/sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1306)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:832)
at okio.Okio$2.read(Okio.java:140)
at okio.AsyncTimeout$2.read(AsyncTimeout.java:237)
... 24 common frames omitted
Caused by: java.SocketException: Socket closed
at java.base/java.SocketInputStream.read(SocketInputStream.java:183)
at java.base/java.SocketInputStream.read(SocketInputStream.java:140)
at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:448)
at java.base/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
at java.base/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1096)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:816)
... 26 common frames omitted
- okhttp3.internal.http2.StreamResetException: stream was reset: CANCEL
okhttp3.internal.http2.StreamResetException: stream was reset: CANCEL
at okhttp3.internal.http2.Http2Stream.takeResponseHeaders(Http2Stream.java:153)
at okhttp3.internal.http2.Http2Codec.readResponseHeaders(Http2Codec.java:125)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at com.foo.fooService.sendRequest(FooService.java:XXX)
at java.base/java.lang.Thread.run(Thread.java:834)
- okhttp3.internal.http2.StreamResetException: stream was reset: REFUSED_STREAM
okhttp3.internal.http2.StreamResetException: stream was reset: REFUSED_STREAM
at okhttp3.internal.http2.Http2Stream.takeResponseHeaders(Http2Stream.java:153)
at okhttp3.internal.http2.Http2Codec.readResponseHeaders(Http2Codec.java:125)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at com.foo.fooService.sendRequest(FooService.java:XXX)
at java.base/java.lang.Thread.run(Thread.java:834)
- java.SocketTimeoutException: timeout
java.SocketTimeoutException: timeout
at okhttp3.internal.http2.Http2Stream$StreamTimeout.newTimeoutException(Http2Stream.java:593)
at okhttp3.internal.http2.Http2Stream$StreamTimeout.exitAndThrowIfTimedOut(Http2Stream.java:601)
at okhttp3.internal.http2.Http2Stream.takeResponseHeaders(Http2Stream.java:146)
at okhttp3.internal.http2.Http2Codec.readResponseHeaders(Http2Codec.java:125)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at com.foo.fooService.sendRequest(FooService.java:XXX)
at java.base/java.lang.Thread.run(Thread.java:834)
Question: How can I easily reproduce these three exceptions? What can be changed on either server or client side to avoid these?