VertX Gateway Issue - Does not throw error on passing invalid Method Type for Request

[shekarnode]

Hi Marc,

As I m working on vertx gateway(Apiman distro Vertx 1.5.7) , I have observed a strange behavior that Gateway isn't throwing error if we are passing invalid Method Type for certain request which isn't supporting that method type.

For example , if have a service which only accepts POST method type.
if I am passing it as GET Method type with Request body then VertX gateway is not throwing any error instead it is returning proper response and it's just not GET method Type , it works with all the method type also.

Now ideally , it should return with error like below :
This error occurs when i m using same service which only accepts 'POST' method type for WildFly Apiman Gateway 1.5.7.Final.

So , is this some kind of feature in VertX core itself , that determines the Method Type of backend endpoint ?

[msavy]

Can you please paste exceptions rather than a screenshot, otherwise I can't easily read or analyse it 👍. ​

IIRC, the exception you are showing refers to the fact that sending a body/payload via a GET request is an unusual thing to try to do. As I recall, with our Servlet gateway implementation the underlying HTTP client library (OkHttp) does not allow a GET request with a body. That's all this error refers to.

Vert.x will allow you to do this, because there's nothing explicitly in the HTTP specification that says you aren't allowed to do GET + body.

Not sure if that answers the question?

[shekarnode]

Hi Marc,

Yes i'm aware of the fact that Http Client used in VertX is different from WildFly(OKHttp).
But wasn't knowing about this .

Thanks and Yes it answers my question.

Posting error for every one's reference.

{
    "responseCode": 500,
    "message": "io.apiman.gateway.engine.beans.exceptions.ConnectorException: method does not support a request body: GET",
    "trace": "io.apiman.gateway.engine.beans.exceptions.RequestAbortedException: io.apiman.gateway.engine.beans.exceptions.ConnectorException: method does not support a request body: GET
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl$3.abort(ApiRequestExecutorImpl.java:771)
	at io.apiman.gateway.platforms.servlet.GatewayServlet$2.handle(GatewayServlet.java:174)
	at io.apiman.gateway.platforms.servlet.GatewayServlet$2.handle(GatewayServlet.java:161)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.handleStream(ApiRequestExecutorImpl.java:743)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.lambda$null$4(ApiRequestExecutorImpl.java:298)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl$$Lambda$153/0x0000000000000000.handle(Unknown Source)
	at io.apiman.gateway.engine.policy.Chain.handleHead(Chain.java:238)
	at io.apiman.gateway.engine.policy.Chain.doApply(Chain.java:152)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.lambda$execute$5(ApiRequestExecutorImpl.java:300)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl$$Lambda$148/0x0000000000000000.handle(Unknown Source)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.loadPolicies(ApiRequestExecutorImpl.java:641)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.execute(ApiRequestExecutorImpl.java:370)
	at io.apiman.gateway.platforms.servlet.GatewayServlet.doAction(GatewayServlet.java:178)
	at io.apiman.gateway.platforms.servlet.GatewayServlet.service(GatewayServlet.java:79)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
	at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
	at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
	at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
	at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
	at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
	at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
	at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:823)
Caused by: io.apiman.gateway.engine.beans.exceptions.ConnectorException: method does not support a request body: GET
	at io.apiman.gateway.engine.handler.ErrorHandler.handleConnectionError(ErrorHandler.java:40)
	at io.apiman.gateway.platforms.servlet.connectors.HttpApiConnection.handleConnectionError(HttpApiConnection.java:407)
	at io.apiman.gateway.platforms.servlet.connectors.HttpApiConnection.write(HttpApiConnection.java:337)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl.lambda$null$2(ApiRequestExecutorImpl.java:289)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl$$Lambda$157/0x0000000000000000.handle(Unknown Source)
	at io.apiman.gateway.engine.io.AbstractStream.handleBody(AbstractStream.java:107)
	at io.apiman.gateway.engine.policy.Chain.write(Chain.java:208)
	at io.apiman.gateway.engine.impl.ApiRequestExecutorImpl$3.write(ApiRequestExecutorImpl.java:751)
	at io.apiman.gateway.platforms.servlet.GatewayServlet$2.handle(GatewayServlet.java:169)
	... 50 more
Caused by: java.net.ProtocolException: method does not support a request body: GET
	at io.apiman.gateway.platforms.servlet.connectors.ok.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:251)
	at io.apiman.gateway.platforms.servlet.connectors.HttpApiConnection.write(HttpApiConnection.java:328)
	... 56 more
"
}