scalaxb soap client fails with a strange exception

[dportabella]

I am trying to call the Web of Science SOAP web service using scalaxb wsdl, as follows:

$ sbt new eed3si9n/scalaxb.g8
  name [foo-project]: WoSScalaAPI
  scala_version [2.12.3]:
  scalaxb_version [1.5.2]:
  dispatch_version [0.12.0]:
  generated_package_name [generated]:
  Template applied in ./wosscalaapi

$ cd wosscalaapi

$ rm ./src/main/wsdl/sample.wsdl
$ wget -O ./src/main/wsdl/WOKMWSAuthenticate.wsdl "http://search.webofknowledge.com/esti/wokmws/ws/WOKMWSAuthenticate?wsdl"
$ wget -O ./src/main/wsdl/WokSearchLite.wsdl "http://search.webofknowledge.com/esti/wokmws/ws/WokSearchLite?wsdl"
$ sbt compile

generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/generated/WOKMWSAuthenticate_type1.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/generated/WOKMWSAuthenticate.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/generated/WokSearchLite_type1.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/generated/WokSearchLite.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/generated/xmlprotocol.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/scalaxb/scalaxb.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/scalaxb/httpclients_async.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/scalaxb/httpclients_dispatch_async.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/scalaxb/soap11_async.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/soapenvelope11/soapenvelope11.scala.
generated /private/tmp/zz/wosscalaapi/target/scala-2.12/src_managed/main/sbt-scalaxb/soapenvelope11/soapenvelope11_xmlprotocol.scala.

then I create the file src/main/scala/Test.scala with this content:

import generated._
import scala.concurrent._
import scala.concurrent.duration._
import scala.concurrent.ExecutionContext.Implicits.global

object Test extends App {
  val authenticateService =
    new WOKMWSAuthenticateServiceSoapBindings with
      scalaxb.Soap11ClientsAsync with
      scalaxb.DispatchHttpClientsAsync {}
      .service

  val authenticateFutureResponse: Future[AuthenticateResponse] = authenticateService.authenticate()
  val authenticateResponse = Await.result(authenticateFutureResponse, 5 seconds)
  println(authenticateResponse)


  val searchService =
    new WokSearchLiteServiceSoapBindings with
      scalaxb.Soap11ClientsAsync with
      scalaxb.DispatchHttpClientsAsync {}
      .service

  val queryParameters = QueryParameters(databaseId = "WOS", userQuery = "DO='10.1126/science.1227970'", queryLanguage = "en")
  val retrieveParameters = RetrieveParameters(firstRecord = 1, count = 5, Seq(SortField(name = "RS", sort = "D")))

  val searchFutureResponse = searchService.search(queryParameters, retrieveParameters)
  println("AAA1")
  val searchResponse = Await.result(searchFutureResponse, 5 seconds)
  println("AAA2")
  println(searchResponse)
}

This works well on the first call to authenticateService.authenticate(), but it fails on searchService.search, between printing AAA1 and AAA2, with:

AuthenticateResponse(Some(R15ACHlb2emby3TZZZZ))
AAA1
Exception in thread "main" java.util.NoSuchElementException: head of empty list
	at scala.collection.immutable.Nil$.head(List.scala:428)
	at scala.collection.immutable.Nil$.head(List.scala:425)
	at scalaxb.Soap11Fault.$anonfun$asFault$1(soap11_async.scala:6)
	at scala.Option.map(Option.scala:146)
	at scalaxb.Soap11Fault.asFault(soap11_async.scala:5)
	at generated.XMLProtocol$WokSearchLiteServiceSoapBindings$WokSearchLiteServiceSoapBinding.$anonfun$search$2(xmlprotocol.scala:796)
	at scala.concurrent.Future.$anonfun$transform$3(Future.scala:240)
	at scala.concurrent.Future.$anonfun$transform$1(Future.scala:240)
	at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:29)
	at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:29)
	at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60)
	at scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:140)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1021)
	at java.util.concurrent.ForkJoinPool$WorkQueue.execLocalTasks(ForkJoinPool.java:1046)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1058)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

Any idea?

Does this look like scalaxb bug, or a web server bug, or a bug on my code?

Question posted in stackoverflow: https://stackoverflow.com/questions/47187224/scalaxb-soap-client-fails-with-a-strange-exception

[eed3si9n]

Fixed in #450