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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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
import java.io.IOException
import java.io.InterruptedIOException
import java.net.InetSocketAddress
import java.net.ServerSocket
import java.net.Socket
import java.net.SocketTimeoutException
import java.nio.charset.Charset
import java.util.Collections
import java.util.Locale
import java.util.TimeZone
import java.util.concurrent.ThreadFactory
import java.util.concurrent.TimeUnit
import kotlin.text.Charsets.UTF_16BE
import kotlin.text.Charsets.UTF_16LE
import kotlin.text.Charsets.UTF_32BE
import kotlin.text.Charsets.UTF_32LE
import kotlin.text.Charsets.UTF_8
import okhttp3.EventListener
import okhttp3.Headers
import okhttp3.HttpUrl
import okhttp3.OkHttpClient
import okhttp3.RequestBody
import okhttp3.Response
import okhttp3.ResponseBody
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.internal.http2.Header
import okio.Buffer
import okio.BufferedSource
import okio.Source
@JvmField
val EMPTY_HEADERS: Headers = commonEmptyHeaders
@JvmField
val EMPTY_REQUEST: RequestBody = commonEmptyRequestBody
@JvmField
val EMPTY_RESPONSE: ResponseBody = EMPTY_BYTE_ARRAY.toResponseBody()
actual typealias HttpUrlRepresentation = HttpUrl
/** GMT and UTC are equivalent for our purposes. */
@JvmField
internal val UTC: TimeZone = TimeZone.getTimeZone("GMT")!!
fun threadFactory(
name: String,
daemon: Boolean
): ThreadFactory = ThreadFactory { runnable ->
Thread(runnable, name).apply {
isDaemon = daemon
}
}
internal fun HttpUrl.toHostHeader(includeDefaultPort: Boolean = false): String {
val host = if (":" in host) {
"[$host]"
} else {
host
}
return if (includeDefaultPort || port != HttpUrl.defaultPort(scheme)) {
"$host:$port"
} else {
host
}
}
/** Returns a [Locale.US] formatted [String]. */
fun format(format: String, vararg args: Any): String {
return String.format(Locale.US, format, *args)
}
@Throws(IOException::class)
internal fun BufferedSource.readBomAsCharset(default: Charset): Charset {
return when (select(UNICODE_BOMS)) {
0 -> UTF_8
1 -> UTF_16BE
2 -> UTF_16LE
3 -> UTF_32BE
4 -> UTF_32LE
-1 -> default
else -> throw AssertionError()
}
}
internal fun checkDuration(name: String, duration: Long, unit: TimeUnit?): Int {
check(duration >= 0L) { "$name < 0" }
check(unit != null) { "unit == null" }
val millis = unit.toMillis(duration)
require(millis <= Integer.MAX_VALUE) { "$name too large." }
require(millis != 0L || duration <= 0L) { "$name too small." }
return millis.toInt()
}
internal fun List.toHeaders(): Headers {
val builder = Headers.Builder()
for ((name, value) in this) {
builder.addLenient(name.utf8(), value.utf8())
}
return builder.build()
}
internal fun Headers.toHeaderList(): List = (0 until size).map {
Header(name(it), value(it))
}
/** Returns true if an HTTP request for this URL and [other] can reuse a connection. */
internal fun HttpUrl.canReuseConnectionFor(other: HttpUrl): Boolean = host == other.host &&
port == other.port &&
scheme == other.scheme
internal fun EventListener.asFactory() = EventListener.Factory { this }
/**
* Reads until this is exhausted or the deadline has been reached. This is careful to not extend the
* deadline if one exists already.
*/
@Throws(IOException::class)
internal fun Source.skipAll(duration: Int, timeUnit: TimeUnit): Boolean {
val nowNs = System.nanoTime()
val originalDurationNs = if (timeout().hasDeadline()) {
timeout().deadlineNanoTime() - nowNs
} else {
Long.MAX_VALUE
}
timeout().deadlineNanoTime(nowNs + minOf(originalDurationNs, timeUnit.toNanos(duration.toLong())))
return try {
val skipBuffer = Buffer()
while (read(skipBuffer, 8192) != -1L) {
skipBuffer.clear()
}
true // Success! The source has been exhausted.
} catch (_: InterruptedIOException) {
false // We ran out of time before exhausting the source.
} finally {
if (originalDurationNs == Long.MAX_VALUE) {
timeout().clearDeadline()
} else {
timeout().deadlineNanoTime(nowNs + originalDurationNs)
}
}
}
/**
* Attempts to exhaust this, returning true if successful. This is useful when reading a complete
* source is helpful, such as when doing so completes a cache body or frees a socket connection for
* reuse.
*/
internal fun Source.discard(timeout: Int, timeUnit: TimeUnit): Boolean = try {
this.skipAll(timeout, timeUnit)
} catch (_: IOException) {
false
}
fun Socket.peerName(): String {
val address = remoteSocketAddress
return if (address is InetSocketAddress) address.hostName else address.toString()
}
/**
* Returns true if new reads and writes should be attempted on this.
*
* Unfortunately Java's networking APIs don't offer a good health check, so we go on our own by
* attempting to read with a short timeout. If the fails immediately we know the socket is
* unhealthy.
*
* @param source the source used to read bytes from the socket.
*/
internal fun Socket.isHealthy(source: BufferedSource): Boolean {
return try {
val readTimeout = soTimeout
try {
soTimeout = 1
!source.exhausted()
} finally {
soTimeout = readTimeout
}
} catch (_: SocketTimeoutException) {
true // Read timed out; socket is good.
} catch (_: IOException) {
false // Couldn't read; socket is closed.
}
}
internal inline fun threadName(name: String, block: () -> Unit) {
val currentThread = Thread.currentThread()
val oldName = currentThread.name
currentThread.name = name
try {
block()
} finally {
currentThread.name = oldName
}
}
/** Returns the Content-Length as reported by the response headers. */
internal fun Response.headersContentLength(): Long {
return headers["Content-Length"]?.toLongOrDefault(-1L) ?: -1L
}
/** Returns an immutable copy of this. */
fun List.toImmutableList(): List {
return Collections.unmodifiableList(toMutableList())
}
/** Returns an immutable list containing [elements]. */
@SafeVarargs
fun immutableListOf(vararg elements: T): List {
return Collections.unmodifiableList(listOf(*elements.clone()))
}
/** Returns an immutable copy of this. */
internal fun Map.toImmutableMap(): Map {
return if (isEmpty()) {
emptyMap()
} else {
Collections.unmodifiableMap(LinkedHashMap(this))
}
}
/** Closes this, ignoring any checked exceptions. */
internal fun Socket.closeQuietly() {
try {
close()
} catch (e: AssertionError) {
throw e
} catch (rethrown: RuntimeException) {
if (rethrown.message == "bio == null") {
// Conscrypt in Android 10 and 11 may throw closing an SSLSocket. This is safe to ignore.
// https://issuetracker.google.com/issues/177450597
return
}
throw rethrown
} catch (_: Exception) {
}
}
/** Closes this, ignoring any checked exceptions. */
fun ServerSocket.closeQuietly() {
try {
close()
} catch (rethrown: RuntimeException) {
throw rethrown
} catch (_: Exception) {
}
}
internal fun Long.toHexString(): String = java.lang.Long.toHexString(this)
internal fun Int.toHexString(): String = Integer.toHexString(this)
@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "NOTHING_TO_INLINE")
internal inline fun Any.wait() = (this as Object).wait()
@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "NOTHING_TO_INLINE")
internal inline fun Any.notify() = (this as Object).notify()
@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "NOTHING_TO_INLINE")
internal inline fun Any.notifyAll() = (this as Object).notifyAll()
internal fun readFieldOrNull(instance: Any, fieldType: Class, fieldName: String): T? {
var c: Class<*> = instance.javaClass
while (c != Any::class.java) {
try {
val field = c.getDeclaredField(fieldName)
field.isAccessible = true
val value = field.get(instance)
return if (!fieldType.isInstance(value)) null else fieldType.cast(value)
} catch (_: NoSuchFieldException) {
}
c = c.superclass
}
// Didn't find the field we wanted. As a last gasp attempt,
// try to find the value on a delegate.
if (fieldName != "delegate") {
val delegate = readFieldOrNull(instance, Any::class.java, "delegate")
if (delegate != null) return readFieldOrNull(delegate, fieldType, fieldName)
}
return null
}
@JvmField
internal val assertionsEnabled: Boolean = OkHttpClient::class.java.desiredAssertionStatus()
/**
* Returns the string "OkHttp" unless the library has been shaded for inclusion in another library,
* or obfuscated with tools like R8 or ProGuard. In such cases it'll return a longer string like
* "com.example.shaded.okhttp3.OkHttp". In large applications it's possible to have multiple OkHttp
* instances; this makes it clear which is which.
*/
@JvmField
internal val okHttpName: String =
OkHttpClient::class.java.name.removePrefix("okhttp3.").removeSuffix("Client")
@Suppress("NOTHING_TO_INLINE")
internal inline fun Any.assertThreadHoldsLock() {
if (assertionsEnabled && !Thread.holdsLock(this)) {
throw AssertionError("Thread ${Thread.currentThread().name} MUST hold lock on $this")
}
}
@Suppress("NOTHING_TO_INLINE")
internal inline fun Any.assertThreadDoesntHoldLock() {
if (assertionsEnabled && Thread.holdsLock(this)) {
throw AssertionError("Thread ${Thread.currentThread().name} MUST NOT hold lock on $this")
}
}
