vert.x 4.5.10 - WebClient sendForm force multipart instead of urlencoded when deployed on Openshift

[joGrim65]

Questions

The question is a bit strange.
I compiled my app with vertx 4.5.10.
Naturally it works on local dev env (Eclipse).
I built a Docker image (openjdk-17) and run it in a Docker container. It works.
The same image deployed instead on an Openshift 4.x platform give me errors when WebClient tries to do a "sendForm(Map)", with this error:

{"error.stacktrace":"java.lang.IllegalArgumentException\n\tat io.vertx.ext.web.client.impl.MultipartFormUpload.run(MultipartFormUpload.java:142)\n\tat io.vertx.ext.web.client.impl.HttpContext.lambda$handleCreateRequest$3(HttpContext.java:464)\n\tat io.vertx.core.impl.future.FutureImpl$4.onSuccess(FutureImpl.java:176)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:259)\n\tat io.vertx.core.Promise.complete(Promise.java:66)\n\tat io.vertx.ext.web.client.impl.HttpContext.handleSendRequest(HttpContext.java:564)\n\tat io.vertx.ext.web.client.impl.HttpContext.execute(HttpContext.java:375)\n\tat io.vertx.ext.web.client.impl.HttpContext.next(HttpContext.java:362)\n\tat io.vertx.ext.web.client.impl.HttpContext.fire(HttpContext.java:329)\n\tat io.vertx.ext.web.client.impl.HttpContext.sendRequest(HttpContext.java:232)\n\tat io.vertx.ext.web.client.impl.HttpContext.lambda$handleCreateRequest$6(HttpContext.java:496)\n\tat io.vertx.core.impl.future.FutureImpl$4.onSuccess(FutureImpl.java:176)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:259)\n\tat io.vertx.core.http.impl.HttpClientImpl.lambda$null$3(HttpClientImpl.java:392)\n\tat io.vertx.core.impl.future.FutureImpl$4.onSuccess(FutureImpl.java:176)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.addListener(FutureImpl.java:231)\n\tat io.vertx.core.impl.future.FutureImpl.onComplete(FutureImpl.java:199)\n\tat io.vertx.core.http.impl.Http1xClientConnection.createStream(Http1xClientConnection.java:1269)\n\tat io.vertx.core.http.impl.HttpClientImpl.lambda$doRequest$4(HttpClientImpl.java:372)\n\tat io.vertx.core.net.impl.pool.Endpoint.lambda$getConnection$0(Endpoint.java:52)\n\tat io.vertx.core.http.impl.ClientHttpEndpointBase.lambda$requestConnection$0(ClientHttpEndpointBase.java:46)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint$Request.handle(SharedClientHttpStreamEndpoint.java:162)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint$Request.handle(SharedClientHttpStreamEndpoint.java:123)\n\tat io.vertx.core.impl.ContextImpl.emit(ContextImpl.java:328)\n\tat io.vertx.core.impl.ContextImpl.emit(ContextImpl.java:321)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool$LeaseImpl.emit(SimpleConnectionPool.java:714)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool$ConnectSuccess$2.run(SimpleConnectionPool.java:337)\n\tat io.vertx.core.net.impl.pool.Task.runNextTasks(Task.java:43)\n\tat io.vertx.core.net.impl.pool.CombinerExecutor.submit(CombinerExecutor.java:91)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool.execute(SimpleConnectionPool.java:244)\n\tat io.vertx.core.net.impl.pool.SimpleConnectionPool.lambda$connect$2(SimpleConnectionPool.java:256)\n\tat io.vertx.core.http.impl.SharedClientHttpStreamEndpoint.lambda$connect$2(SharedClientHttpStreamEndpoint.java:102)\n\tat io.vertx.core.impl.future.FutureImpl$4.onSuccess(FutureImpl.java:176)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:259)\n\tat io.vertx.core.impl.future.Composition$1.onSuccess(Composition.java:62)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.addListener(FutureImpl.java:231)\n\tat io.vertx.core.impl.future.Composition.onSuccess(Composition.java:43)\n\tat io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:66)\n\tat io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:259)\n\tat io.vertx.core.Promise.complete(Promise.java:66)\n\tat io.vertx.core.net.impl.NetClientImpl.lambda$connected$9(NetClientImpl.java:343)\n\tat io.vertx.core.net.impl.VertxHandler.setConnection(VertxHandler.java:82)\n\tat io.vertx.core.net.impl.VertxHandler.handlerAdded(VertxHandler.java:88)\n\tat io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:1130)\n\tat io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:608)\n\tat io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:222)\n\tat io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:194)\n\tat io.vertx.core.net.impl.NetClientImpl.connected(NetClientImpl.java:345)\n\tat io.vertx.core.net.impl.NetClientImpl.lambda$connectInternal2$3(NetClientImpl.java:307)\n\tat io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:270)\n\tat io.vertx.core.net.impl.ChannelProvider$1.userEventTriggered(ChannelProvider.java:123)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:398)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:376)\n\tat io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:368)\n\tat io.netty.handler.ssl.SslHandler.setHandshakeSuccess(SslHandler.java:1938)\n\tat io.netty.handler.ssl.SslHandler.wrapNonAppData(SslHandler.java:997)\n\tat io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1509)\n\tat io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1336)\n\tat io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1385)\n\tat io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:530)\n\tat io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:469)\n\tat io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)\n\tat io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)\n\tat io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1407)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)\n\tat io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:918)\n\tat io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)\n\tat io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)\n\tat io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)\n\tat io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:994)\n\tat io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)\n\tat io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)\n\tat java.base/java.lang.Thread.run(Thread.java:840)","location.line_number":"?","location.method":"?","@timestamp":"2024-10-31T14:40:41.666+01:00","error.type":"java.lang.IllegalArgumentException","application":"r4c-gateway","location.file":"?","level":"ERROR","thread_name":"vert.x-eventloop-thread-1","location.class":"?","logger_name":"io.vertx.core.impl.ContextImpl","message":"Unhandled exception"}

Version

4.5.10

Context

The exception happens when WebClient.sendForm(Map) is used.
The map contains a bunch o parameters (less than 10).
The service I try to call is exposed as @consume("application/x-www-form-urlencoded") and is never reached.
It seems considering the form as "multipart" instead of "application/x-www-form-urlencoded".
I tryed forcing "content-type: application/x-www-form-urlencoded" header before "sendForm", but I have the same error.
All is working, but not webclient call using "sendForm".

The involved code was working from the version 4.0.x of vert.x and on Openshift 3 and 4.
The last working one was using vert.x 4.5.7.

I tried recompiling my app with 4.5.8... and it works.
It seems something related to 4.5.10 (I have not tried 4.5.9).

Do you have a reproducer?

No

Extra

The starting image is "ubi9-openjdk17-jre:17-12" (on that, the app based on vertx 4.5.7 was perfectly working in many production env).

[tsegismont]

Looking at the stacktrace, it seems the failure happens because the MultiPartFormUpload object is used on different vert.x contexts:

https://github.com/vert-x3/vertx-web/blob/5478d9ba77e95c37693aed6087f998321cd06478/vertx-web-client/src/main/java/io/vertx/ext/web/client/impl/MultipartFormUpload.java#L141-L143

I can't say why this happens when deploying to Openshift while it doesn't when running the application locally. It may have to do with the number of instances deployed, but we can only guess without some snippets.

Anyway, I'm closing this issue because it's related to the Vert.x Web Client, so it should be reported to the vertx-web repository.

If you open a new issue there, please provide more info so that we can understand what's going on.