Switch to Ktor's Jetty backend

We've now found both the CIO and Netty backends to be problematic in
certain cases (CIO with lots of concurrent requests, Netty with
backpressure). Hopefully Jetty is a bit more battle-tested!

Signed-off-by: Graham <gpe@openrs2.org>

archive/src/main/kotlin/org/openrs2/archive/web/WebServer.kt

@@ -6,10 +6,10 @@ import io.ktor.serialization.jackson.JacksonConverter
 import io.ktor.server.application.ApplicationCall
 import io.ktor.server.application.call
 import io.ktor.server.application.install
-import io.ktor.server.cio.CIO
 import io.ktor.server.engine.embeddedServer
 import io.ktor.server.http.content.resources
 import io.ktor.server.http.content.static
+import io.ktor.server.jetty.Jetty
 import io.ktor.server.plugins.autohead.AutoHeadResponse
 import io.ktor.server.plugins.cachingheaders.CachingHeaders
 import io.ktor.server.plugins.conditionalheaders.ConditionalHeaders
@@ -39,7 +39,7 @@ public class WebServer @Inject constructor(
     @Json private val mapper: ObjectMapper
 ) {
     public fun start(address: String, port: Int) {
-        embeddedServer(CIO, host = address, port = port) {
+        embeddedServer(Jetty, host = address, port = port) {
             install(AutoHeadResponse)
             install(CachingHeaders)
             install(ConditionalHeaders)

gradle/libs.versions.toml

@@ -60,12 +60,12 @@ kotlinPoet = { module = "com.squareup:kotlinpoet", version = "1.12.0" }
 ktor-serialization-jackson = { module = "io.ktor:ktor-serialization-jackson", version.ref = "ktor" }
 ktor-server-autoHeadResponse = { module = "io.ktor:ktor-server-auto-head-response", version.ref = "ktor" }
 ktor-server-cachingHeaders = { module = "io.ktor:ktor-server-caching-headers", version.ref = "ktor" }
-ktor-server-cio = { module = "io.ktor:ktor-server-cio", version.ref = "ktor" }
 ktor-server-conditionalHeaders = { module = "io.ktor:ktor-server-conditional-headers", version.ref = "ktor" }
 ktor-server-contentNegotiation = { module = "io.ktor:ktor-server-content-negotiation", version.ref = "ktor" }
 ktor-server-cors = { module = "io.ktor:ktor-server-cors", version.ref = "ktor" }
 ktor-server-defaultHeaders = { module = "io.ktor:ktor-server-default-headers", version.ref = "ktor" }
 ktor-server-forwardedHeader = { module = "io.ktor:ktor-server-forwarded-header", version.ref = "ktor" }
+ktor-server-jetty = { module = "io.ktor:ktor-server-jetty", version.ref = "ktor" }
 ktor-server-thymeleaf = { module = "io.ktor:ktor-server-thymeleaf", version.ref = "ktor" }
 ktor-server-webjars = { module = "io.ktor:ktor-server-webjars", version.ref = "ktor" }
 logback = { module = "ch.qos.logback:logback-classic", version = "1.4.6" }
@@ -93,12 +93,12 @@ ktor = [
 	"ktor-serialization-jackson",
 	"ktor-server-autoHeadResponse",
 	"ktor-server-cachingHeaders",
-	"ktor-server-cio",
 	"ktor-server-conditionalHeaders",
 	"ktor-server-contentNegotiation",
 	"ktor-server-cors",
 	"ktor-server-defaultHeaders",
 	"ktor-server-forwardedHeader",
+	"ktor-server-jetty",
 	"ktor-server-thymeleaf",
 	"ktor-server-webjars",
 ]

log/src/main/resources/logback.xml

@@ -19,6 +19,10 @@
     <appender-ref ref="STDERR" />
   </logger>
 
+  <logger name="org.eclipse.jetty" level="INFO">
+    <appender-ref ref="STDERR" />
+  </logger>
+
   <logger name="org.flywaydb" level="WARN">
     <appender-ref ref="STDERR" />
   </logger>