[undertow-dev] reverse proxy doesn't work for post request

[Steve Hu]

Hi,

I am trying to build a RESTful reverse proxy in order to wrap up APIs built
with other Java frameworks or other languages. The codebase is copied from
the reverse proxy example and I have a tutorial to document the steps to
reproduce the error. I am just wondering if there are anything I missed or
this is a bug.

Thanks,

Steve

Here the tutorial

https://networknt.github.io/light-proxy/tutorial/

And here is the error

14:04:03.357 [XNIO-1 I/O-1]   ERROR io.undertow.proxy handleFailure -
UT005028: Proxy request to /v1/postData failed
io.undertow.server.TruncatedResponseException: null
at
io.undertow.client.http.HttpRequestConduit.truncateWrites(HttpRequestConduit.java:711)
at
io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.terminateWrites(AbstractFixedLengthStreamSinkConduit.java:256)
at
org.xnio.conduits.ConduitStreamSinkChannel.shutdownWrites(ConduitStreamSinkChannel.java:178)
at
io.undertow.channels.DetachableStreamSinkChannel.shutdownWrites(DetachableStreamSinkChannel.java:79)
at
io.undertow.server.handlers.proxy.ProxyHandler$HTTPTrailerChannelListener.handleEvent(ProxyHandler.java:736)
at
io.undertow.server.handlers.proxy.ProxyHandler$ProxyAction$1.completed(ProxyHandler.java:628)
at
io.undertow.server.handlers.proxy.ProxyHandler$ProxyAction$1.completed(ProxyHandler.java:543)
at
io.undertow.client.http.HttpClientExchange.invokeReadReadyCallback(HttpClientExchange.java:212)
at
io.undertow.client.http.HttpClientConnection.initiateRequest(HttpClientConnection.java:418)
at
io.undertow.client.http.HttpClientConnection.sendRequest(HttpClientConnection.java:350)
at
io.undertow.server.handlers.proxy.ProxyHandler$ProxyAction.run(ProxyHandler.java:543)
at io.undertow.util.SameThreadExecutor.execute(SameThreadExecutor.java:35)
at
io.undertow.server.HttpServerExchange.dispatch(HttpServerExchange.java:797)
at
io.undertow.server.handlers.proxy.ProxyHandler$ProxyClientHandler.completed(ProxyHandler.java:298)
at
io.undertow.server.handlers.proxy.ProxyHandler$ProxyClientHandler.completed(ProxyHandler.java:272)
at
io.undertow.server.handlers.proxy.ProxyConnectionPool.connectionReady(ProxyConnectionPool.java:338)
at
io.undertow.server.handlers.proxy.ProxyConnectionPool.access$900(ProxyConnectionPool.java:61)
at
io.undertow.server.handlers.proxy.ProxyConnectionPool$2.completed(ProxyConnectionPool.java:286)
at
io.undertow.server.handlers.proxy.ProxyConnectionPool$2.completed(ProxyConnectionPool.java:273)
at
io.undertow.client.http.HttpClientProvider.handleConnected(HttpClientProvider.java:156)
at
io.undertow.client.http.HttpClientProvider.access$000(HttpClientProvider.java:51)
at
io.undertow.client.http.HttpClientProvider$2.handleEvent(HttpClientProvider.java:127)
at
io.undertow.client.http.HttpClientProvider$2.handleEvent(HttpClientProvider.java:124)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at
org.xnio.nio.WorkerThread$ConnectHandle.handleReady(WorkerThread.java:326)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:561)
14:05:03.462 [XNIO-1 I/O-1]   ERROR io.undertow.proxy handleFailure -
UT005028: Proxy request to /v1/postData failed
java.io.IOException: UT001000: Connection closed
at
io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:573)
at
io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:511)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at
org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:561)
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