/
RouteFailureTest.kt
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/
RouteFailureTest.kt
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/*
* Copyright (C) 2022 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3
import java.io.IOException
import java.net.InetAddress
import java.net.InetSocketAddress
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.SocketPolicy
import mockwebserver3.junit5.internal.MockWebServerInstance
import okhttp3.internal.http2.ErrorCode
import okhttp3.testing.PlatformRule
import okhttp3.tls.internal.TlsUtil.localhost
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension
class RouteFailureTest {
private lateinit var socketFactory: SpecificHostSocketFactory
private lateinit var client: OkHttpClient
@RegisterExtension
val platform = PlatformRule()
@RegisterExtension
val clientTestRule = OkHttpClientTestRule()
private lateinit var server1: MockWebServer
private lateinit var server2: MockWebServer
private var listener = RecordingEventListener()
private val handshakeCertificates = localhost()
val dns = FakeDns()
val ipv4 = InetAddress.getByName("203.0.113.1")
val ipv6 = InetAddress.getByName("2001:db8:ffff:ffff:ffff:ffff:ffff:1")
val refusedStream = MockResponse()
.setHttp2ErrorCode(ErrorCode.REFUSED_STREAM.httpCode)
.setSocketPolicy(SocketPolicy.RESET_STREAM_AT_START)
val bodyResponse = MockResponse().setBody("body")
@BeforeEach
fun setUp(
server: MockWebServer,
@MockWebServerInstance("server2") server2: MockWebServer
) {
this.server1 = server
this.server2 = server2
socketFactory = SpecificHostSocketFactory(InetSocketAddress(server.hostName, server.port))
client = clientTestRule.newClientBuilder()
.dns(dns)
.socketFactory(socketFactory)
.eventListenerFactory(clientTestRule.wrap(listener))
.build()
}
@Test
fun http2OneBadHostOneGoodNoRetryOnConnectionFailure() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server2.enqueue(bodyResponse)
dns[server1.hostName] = listOf(ipv6, ipv4)
socketFactory[ipv6] = server1.inetSocketAddress
socketFactory[ipv4] = server2.inetSocketAddress
client = client.newBuilder()
.fastFallback(false)
.apply {
retryOnConnectionFailure = false
}
.build()
executeSynchronously(request)
.assertFailureMatches("stream was reset: REFUSED_STREAM")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
assertThat(server1.requestCount).isEqualTo(1)
assertThat(server2.requestCount).isEqualTo(0)
}
@Test
fun http2OneBadHostOneGoodRetryOnConnectionFailure() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server1.enqueue(refusedStream)
server2.enqueue(bodyResponse)
dns[server1.hostName] = listOf(ipv6, ipv4)
socketFactory[ipv6] = server1.inetSocketAddress
socketFactory[ipv4] = server2.inetSocketAddress
client = client.newBuilder()
.fastFallback(false)
.apply {
retryOnConnectionFailure = true
}
.build()
executeSynchronously(request)
.assertBody("body")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
// TODO check if we expect a second request to server1, before attempting server2
assertThat(server1.requestCount).isEqualTo(2)
assertThat(server2.requestCount).isEqualTo(1)
}
@Test
fun http2OneBadHostOneGoodNoRetryOnConnectionFailureFastFallback() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server2.enqueue(bodyResponse)
dns[server1.hostName] = listOf(ipv6, ipv4)
socketFactory[ipv6] = server1.inetSocketAddress
socketFactory[ipv4] = server2.inetSocketAddress
client = client.newBuilder()
.fastFallback(true)
.apply {
retryOnConnectionFailure = false
}
.build()
executeSynchronously(request)
.assertFailureMatches("stream was reset: REFUSED_STREAM")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
assertThat(server1.requestCount).isEqualTo(1)
assertThat(server2.requestCount).isEqualTo(0)
}
@Test
fun http2OneBadHostOneGoodRetryOnConnectionFailureFastFallback() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server1.enqueue(refusedStream)
server2.enqueue(bodyResponse)
dns[server1.hostName] = listOf(ipv6, ipv4)
socketFactory[ipv6] = server1.inetSocketAddress
socketFactory[ipv4] = server2.inetSocketAddress
client = client.newBuilder()
.fastFallback(true)
.apply {
retryOnConnectionFailure = true
}
.build()
executeSynchronously(request)
.assertBody("body")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
// TODO check if we expect a second request to server1, before attempting server2
assertThat(server1.requestCount).isEqualTo(2)
assertThat(server2.requestCount).isEqualTo(1)
}
@Test
fun http2OneBadHostRetryOnConnectionFailure() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server1.enqueue(refusedStream)
dns[server1.hostName] = listOf(ipv6)
socketFactory[ipv6] = server1.inetSocketAddress
client = client.newBuilder()
.fastFallback(false)
.apply {
retryOnConnectionFailure = true
}
.build()
executeSynchronously(request)
.assertFailureMatches("stream was reset: REFUSED_STREAM")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
assertThat(server1.requestCount).isEqualTo(1)
}
@Test
fun http2OneBadHostRetryOnConnectionFailureFastFallback() {
enableProtocol(Protocol.HTTP_2)
val request = Request(server1.url("/"))
server1.enqueue(refusedStream)
server1.enqueue(refusedStream)
dns[server1.hostName] = listOf(ipv6)
socketFactory[ipv6] = server1.inetSocketAddress
client = client.newBuilder()
.fastFallback(true)
.apply {
retryOnConnectionFailure = true
}
.build()
executeSynchronously(request)
.assertFailureMatches("stream was reset: REFUSED_STREAM")
assertThat(client.routeDatabase.failedRoutes).isEmpty()
assertThat(server1.requestCount).isEqualTo(1)
}
private fun enableProtocol(protocol: Protocol) {
enableTls()
client = client.newBuilder()
.protocols(listOf(protocol, Protocol.HTTP_1_1))
.build()
server1.protocols = client.protocols
server2.protocols = client.protocols
}
private fun enableTls() {
client = client.newBuilder()
.sslSocketFactory(
handshakeCertificates.sslSocketFactory(), handshakeCertificates.trustManager
)
.hostnameVerifier(RecordingHostnameVerifier())
.build()
server1.useHttps(handshakeCertificates.sslSocketFactory())
server2.useHttps(handshakeCertificates.sslSocketFactory())
}
private fun executeSynchronously(request: Request): RecordedResponse {
val call = client.newCall(request)
return try {
val response = call.execute()
val bodyString = response.body.string()
RecordedResponse(request, response, null, bodyString, null)
} catch (e: IOException) {
RecordedResponse(request, null, null, null, e)
}
}
}