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fix DoH error when using ip address as hostname #7073

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Merged
swankjesse merged 10 commits into from
Feb 16, 2022
Merged

fix DoH error when using ip address as hostname #7073

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f74fa03
fix DoH error when using ip address as hostname
TaoZang Feb 11, 2022
37be7f2
lookup hostname first and try to parse as IP address only when lookup…
TaoZang Feb 11, 2022
f26f1cd
add unit test in DnsOverHttpsTest for the case that Doing DNS lookup …
TaoZang Feb 12, 2022
1adcb89
use simpler ipAddress check instead of complex support functions
TaoZang Feb 14, 2022
2cf4de1
add test case for some special ipv6 addresses
TaoZang Feb 15, 2022
47f50f5
use existing ipAddress check functions instead of adding a new simila…
TaoZang Feb 15, 2022
d0fb591
avoid to do dns lookup when the hostname is already an IP address
TaoZang Feb 16, 2022
8158e31
code style update
TaoZang Feb 16, 2022
d9bb9fd
add test case
TaoZang Feb 16, 2022
9614b50
use loopback address instead of localhost
TaoZang Feb 16, 2022
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1 change: 1 addition & 0 deletions okhttp-dnsoverhttps/src/main/kotlin/okhttp3/dnsoverhttps/DnsOverHttps.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,7 @@ class DnsOverHttps internal constructor(
@get:JvmName("resolvePrivateAddresses") val resolvePrivateAddresses: Boolean,
@get:JvmName("resolvePublicAddresses") val resolvePublicAddresses: Boolean
) : Dns {

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@yschimke yschimke Feb 16, 2022

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nit: Can you revert this line.

@Throws(UnknownHostException::class)
override fun lookup(hostname: String): List<InetAddress> {
if (!resolvePrivateAddresses || !resolvePublicAddresses) {
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19 changes: 13 additions & 6 deletions okhttp/src/jvmMain/kotlin/okhttp3/internal/connection/RouteSelector.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
package okhttp3.internal.connection

import java.io.IOException
import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.Proxy
import java.net.SocketException
Expand All @@ -26,6 +27,7 @@ import okhttp3.Call
import okhttp3.EventListener
import okhttp3.HttpUrl
import okhttp3.Route
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.immutableListOf
import okhttp3.internal.toImmutableList

Expand Down Expand Up @@ -159,15 +161,20 @@ class RouteSelector(
if (proxy.type() == Proxy.Type.SOCKS) {
mutableInetSocketAddresses += InetSocketAddress.createUnresolved(socketHost, socketPort)
} else {
eventListener.dnsStart(call, socketHost)
val addresses = if (socketHost.canParseAsIpAddress()) {
listOf(InetAddress.getByName(socketHost))
} else {
eventListener.dnsStart(call, socketHost)
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@yschimke yschimke Feb 16, 2022 •
edited
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This seems like a nice benefit of this change. that DNS start event isn't emitted for an IP address.


val result = address.dns.lookup(socketHost)
if (result.isEmpty()) {
throw UnknownHostException("${address.dns} returned no addresses for $socketHost")
}

val addresses = address.dns.lookup(socketHost)
if (addresses.isEmpty()) {
throw UnknownHostException("${address.dns} returned no addresses for $socketHost")
eventListener.dnsEnd(call, socketHost, result)
result
}

eventListener.dnsEnd(call, socketHost, addresses)

// Try each address for best behavior in mixed IPv4/IPv6 environments.
val orderedAddresses = when {
fastFallback -> reorderForHappyEyeballs(addresses)
Expand Down