jvmMain.okhttp3.internal.connection.SequentialExchangeFinder.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2015 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.internal.connection
import java.io.IOException
/** Attempt routes one at a time until one connects. */
internal class SequentialExchangeFinder(
override val routePlanner: RoutePlanner
) : ExchangeFinder {
override fun find(): RealConnection {
var firstException: IOException? = null
while (true) {
if (routePlanner.isCanceled()) throw IOException("Canceled")
try {
val plan = routePlanner.plan()
if (!plan.isReady) {
val tcpConnectResult = plan.connectTcp()
val connectResult = when {
tcpConnectResult.isSuccess -> plan.connectTlsEtc()
else -> tcpConnectResult
}
val (_, nextPlan, failure) = connectResult
if (failure != null) throw failure
if (nextPlan != null) {
routePlanner.deferredPlans.addFirst(nextPlan)
continue
}
}
return plan.handleSuccess()
} catch (e: IOException) {
if (firstException == null) {
firstException = e
} else {
firstException.addSuppressed(e)
}
if (!routePlanner.hasNext()) {
throw firstException
}
}
}
}
}