Jetty HTTP ERROR: 500 with a GET parameter and subsequent requests

I’ve been checking out Couchbase’s REST API and would like to record and replay some interactions using WireMock. Unfortunately I’ve encountered an issue where a GET request with a parameter being made multiple times (immediately following the previous) causes Jetty to return a 500 error.

This is the URL I’m GETting, proxied to couchbase via WireMock: http://localhost:8442/pools/default?waitChange=0

I’m mostly using the Insomnia REST client to send the request. I’ve determined that the following do not affect the result:

• HTTP request headers
• HTTP request auth
• REST client
• --container-threads amount
• --jetty-acceptor-threads amount
• --jetty-accept-queue-size amount

In my tests I’ve found that removing the parameter ?waitChange=0 does not reproduce the issue (multiple, subsequent requests can be made as quickly as possible with a valid response). I’ve also found that trying a test parameter (?test=0) does not reproduce the issue.

The reason I think WireMock is the culprit (as opposed to Couchbase’s REST implementation) is that I can make the same requests directly to Couchbase and get a successful response every time.

Here are the logs and the startup command used to run the server; the problem URI was hit twice for this test, with the second attempt failing:

java -jar /path/to/wiremock-standalone-2.5.1.jar --container-threads 200 --print-all-network-traffic --verbose --https-port 8443 --port 8442 --root-dir /path/to/wiremock-recordings/test-record --proxy-all="http://<my-couchbase-host>:8091" --record-mappings --match-headers="Accept,Content-Type,Cache-Control,Authorization"

2017-03-02 11:11:30.149 Verbose logging enabled
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
2017-03-02 11:11:30.455 Verbose logging enabled
2017-03-02 11:11:30.473 Verbose logging enabled
2017-03-02 11:11:30.512 Recording mappings to /path/to/wiremock-recordings/test-record/mappings
 /$$      /$$ /$$                     /$$      /$$                     /$$
| $$  /$ | $$|__/                    | $$$    /$$$                    | $$
| $$ /$$$| $$ /$$  /$$$$$$   /$$$$$$ | $$$$  /$$$$  /$$$$$$   /$$$$$$$| $$   /$$
| $$/$$ $$ $$| $$ /$$__  $$ /$$__  $$| $$ $$/$$ $$ /$$__  $$ /$$_____/| $$  /$$/
| $$$$_  $$$$| $$| $$  \__/| $$$$$$$$| $$  $$$| $$| $$  \ $$| $$      | $$$$$$/
| $$$/ \  $$$| $$| $$      | $$_____/| $$\  $ | $$| $$  | $$| $$      | $$_  $$
| $$/   \  $$| $$| $$      |  $$$$$$$| $$ \/  | $$|  $$$$$$/|  $$$$$$$| $$ \  $$
|__/     \__/|__/|__/       \_______/|__/     |__/ \______/  \_______/|__/  \__/

port:                         8442
https-port:                   8443
https-keystore:               jar:file:/path/to/wiremock-standalone-2.5.1.jar!/keystore
proxy-all:                    http://<my-couchbase-host>:8091
preserve-host-header:         false
enable-browser-proxying:      false
record-mappings:              true
match-headers:                [Accept, Content-Type, Cache-Control, Authorization]
no-request-journal:           false
verbose:                      true

2017-03-02 11:11:50.615 Opened Socket[addr=/127.0.0.1,port=60484,localport=8442]
2017-03-02 11:11:50.646 Incoming bytes: GET /pools/default?waitChange=0 HTTP/1.1
Authorization: Basic cm91c2VyOnBhc3N3b3Jk
Accept: */*
User-Agent: insomnia/4.2.14
host: localhost:8442
accept-encoding: gzip, deflate
Connection: keep-alive


2017-03-02 11:11:50.694 Proxying: GET http://<my-couchbase-host>:8091/pools/default?waitChange=0
2017-03-02 11:11:51.001 Request received:
127.0.0.1 - GET /pools/default?waitChange=0

Accept-Encoding: [gzip, deflate]
User-Agent: [insomnia/4.2.14]
Authorization: [Basic cm91c2VyOnBhc3N3b3Jk]
Connection: [keep-alive]
Host: [localhost:8442]
Accept: [*/*]



Matched response definition:
{
  "status" : 200,
  "proxyBaseUrl" : "http://<my-couchbase-host>:8091"
}

Response:
HTTP/1.1 200
Server: [Couchbase Server]
Pragma: [no-cache]
Date: [Thu, 02 Mar 2017 16:11:57 GMT]
Content-Type: [application/json]
Content-Length: [5860]
Cache-Control: [no-cache]

{"etag":"95119255","clusterName":"","storageTotals":{"ram":{"total":12289662976,"quotaTotal":6442450944,"quotaUsed":6442450944,"used":6740443136,"usedByData":611960684,"quotaUsedPerNode":2147483648,"quotaTotalPerNode":2147483648},"hdd":{"total":222675869696,"quotaTotal":222675869696,"used":2226758696,"usedByData":472303039,"free":0}},"balanced":true,"failoverWarnings":[],"goxdcrEnabled":true,"ldapEnabled":false,"serverGroupsUri":"/pools/default/serverGroups?v=108506564","indexMemoryQuota":256,"memoryQuota":2048,"name":"default","alerts":[],"alertsSilenceURL":"/controller/resetAlerts?token=0&uuid=8e989e84e055a831e614fc877e41a325","nodes":[{"systemStats":{"cpu_utilization_rate":4.556962025316456,"swap_total":6442446848,"swap_used":11964416,"mem_total":3975221248,"mem_free":2175139840},"interestingStats":{"cmd_get":0,"couch_docs_actual_disk_size":151499227,"couch_docs_data_size":122352976,"couch_spatial_data_size":5963158,"couch_spatial_disk_size":5974801,"couch_views_actual_disk_size":6020437,"couch_views_data_size":45636,"curr_items":18085,"curr_items_tot":40985,"ep_bg_fetched":0,"get_hits":0,"mem_used":211950032,"ops":0,"vb_replica_curr_items":22900},"uptime":"1375990","memoryTotal":3975221248,"memoryFree":2175139840,"mcdMemoryReserved":3032,"mcdMemoryAllocated":3032,"couchApiBase":"http://10.77.15.9:8092/","clusterMembership":"active","recoveryType":"none","status":"healthy","otpNode":"ns_1@10.77.15.9","hostname":"10.77.15.9:8091","clusterCompatibility":262145,"version":"4.1.1-5914-community","os":"x86_64-unknown-linux-gnu","ports":{"proxy":11211,"direct":11210},"services":["kv"]},{"systemStats":{"cpu_utilization_rate":8.860759493670885,"swap_total":6442446848,"swap_used":91934720,"mem_total":4019945472,"mem_free":2099113984},"interestingStats":{"cmd_get":0,"couch_docs_actual_disk_size":146480622,"couch_docs_data_size":115802791,"couch_spatial_data_size":6016449,"couch_spatial_disk_size":6028080,"couch_views_actual_disk_size":6073704,"couch_views_data_size":45624,"curr_items":17971,"curr_items_tot":40872,"ep_bg_fetched":0,"get_hits":0,"mem_used":211841656,"ops":0,"vb_replica_curr_items":22901},"uptime":"1375466","memoryTotal":4019945472,"memoryFree":2099113984,"mcdMemoryReserved":3066,"mcdMemoryAllocated":3066,"couchApiBase":"http://<my-couchbase-host>:8092/","clusterMembership":"active","recoveryType":"none","status":"healthy","otpNode":"ns_1@<my-couchbase-host>","thisNode":true,"hostname":"<my-couchbase-host>:8091","clusterCompatibility":262145,"version":"4.1.1-5914-community","os":"x86_64-unknown-linux-gnu","ports":{"proxy":11211,"direct":11210},"services":["index","kv","n1ql"]},{"systemStats":{"cpu_utilization_rate":7.770859277708593,"swap_total":5032693760,"swap_used":2974310400,"mem_total":4294496256,"mem_free":1784737792},"interestingStats":{"cmd_get":0,"couch_docs_actual_disk_size":138140830,"couch_docs_data_size":107413823,"couch_spatial_data_size":6007194,"couch_spatial_disk_size":6019831,"couch_views_actual_disk_size":6065507,"couch_views_data_size":45676,"curr_items":18010,"curr_items_tot":40877,"ep_bg_fetched":0,"get_hits":0,"mem_used":188168996,"ops":0,"vb_replica_curr_items":22869},"uptime":"1375673","memoryTotal":4294496256,"memoryFree":1784737792,"mcdMemoryReserved":3276,"mcdMemoryAllocated":3276,"couchApiBase":"http://<another-couchbase-host>:8092/","clusterMembership":"active","recoveryType":"none","status":"healthy","otpNode":"ns_1@<another-couchbase-host>","hostname":"<another-couchbase-host>:8091","clusterCompatibility":262145,"version":"4.1.1-5914-community","os":"win64","ports":{"proxy":11211,"direct":11210},"services":["index","kv","n1ql"]}],"buckets":{"uri":"/pools/default/buckets?v=80956094&uuid=8e989e84e055a831e614fc877e41a325","terseBucketsBase":"/pools/default/b/","terseStreamingBucketsBase":"/pools/default/bs/"},"remoteClusters":{"uri":"/pools/default/remoteClusters?uuid=8e989e84e055a831e614fc877e41a325","validateURI":"/pools/default/remoteClusters?just_validate=1"},"controllers":{"addNode":{"uri":"/controller/addNodeV2?uuid=8e989e84e055a831e614fc877e41a325"},"rebalance":{"uri":"/controller/rebalance?uuid=8e989e84e055a831e614fc877e41a325"},"failOver":{"uri":"/controller/failOver?uuid=8e989e84e055a831e614fc877e41a325"},"startGracefulFailover":{"uri":"/controller/startGracefulFailover?uuid=8e989e84e055a831e614fc877e41a325"},"reAddNode":{"uri":"/controller/reAddNode?uuid=8e989e84e055a831e614fc877e41a325"},"reFailOver":{"uri":"/controller/reFailOver?uuid=8e989e84e055a831e614fc877e41a325"},"ejectNode":{"uri":"/controller/ejectNode?uuid=8e989e84e055a831e614fc877e41a325"},"setRecoveryType":{"uri":"/controller/setRecoveryType?uuid=8e989e84e055a831e614fc877e41a325"},"setAutoCompaction":{"uri":"/controller/setAutoCompaction?uuid=8e989e84e055a831e614fc877e41a325","validateURI":"/controller/setAutoCompaction?just_validate=1"},"clusterLogsCollection":{"startURI":"/controller/startLogsCollection?uuid=8e989e84e055a831e614fc877e41a325","cancelURI":"/controller/cancelLogsCollection?uuid=8e989e84e055a831e614fc877e41a325"},"replication":{"createURI":"/controller/createReplication?uuid=8e989e84e055a831e614fc877e41a325","validateURI":"/controller/createReplication?just_validate=1"}},"rebalanceStatus":"none","rebalanceProgressUri":"/pools/default/rebalanceProgress","stopRebalanceUri":"/controller/stopRebalance?uuid=8e989e84e055a831e614fc877e41a325","nodeStatusesUri":"/nodeStatuses","maxBucketCount":10,"autoCompactionSettings":{"parallelDBAndViewCompaction":false,"databaseFragmentationThreshold":{"percentage":30,"size":"undefined"},"viewFragmentationThreshold":{"percentage":30,"size":"undefined"},"indexFragmentationThreshold":{"percentage":30}},"tasks":{"uri":"/pools/default/tasks?v=81654723"},"counters":{"rebalance_success":1,"rebalance_start":1},"indexStatusURI":"/indexStatus?v=101727310"}

2017-03-02 11:11:51.005 Recording mappings for /pools/default?waitChange=0
2017-03-02 11:11:51.038 Outgoing bytes: HTTP/1.1 200 OK
Server: Couchbase Server
Pragma: no-cache
Date: Thu, 02 Mar 2017 16:11:57 GMT
Content-Type: application/json
Cache-Control: no-cache
Content-Encoding: gzip
Vary: Accept-Encoding, User-Agent
Transfer-Encoding: chunked

A

2017-03-02 11:11:51.038 Problem decoding network traffic
java.nio.charset.MalformedInputException: Input length = 1
    at java.nio.charset.CoderResult.throwException(CoderResult.java:277)
    at java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:798)
    at com.github.tomakehurst.wiremock.http.trafficlistener.ConsoleNotifyingWiremockNetworkTrafficListener.outgoing(ConsoleNotifyingWiremockNetworkTrafficListener.java:34)
    at com.github.tomakehurst.wiremock.jetty9.JettyHttpServer$NetworkTrafficListenerAdapter.outgoing(JettyHttpServer.java:369)
    at wiremock.org.eclipse.jetty.io.NetworkTrafficSelectChannelEndPoint.notifyOutgoing(NetworkTrafficSelectChannelEndPoint.java:144)
    at wiremock.org.eclipse.jetty.io.NetworkTrafficSelectChannelEndPoint.flush(NetworkTrafficSelectChannelEndPoint.java:65)
    at wiremock.org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:408)
    at wiremock.org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:302)
    at wiremock.org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:129)
    at wiremock.org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:676)
    at wiremock.org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:246)
    at wiremock.org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:208)
    at wiremock.org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:471)
    at wiremock.org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:763)
    at wiremock.org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801)
    at wiremock.org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:147)
    at wiremock.org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:140)
    at wiremock.org.eclipse.jetty.server.HttpOutput.flush(HttpOutput.java:242)
    at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
    at wiremock.org.eclipse.jetty.servlets.gzip.AbstractCompressedStream.flush(AbstractCompressedStream.java:125)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.writeAndTranslateExceptions(WireMockHandlerDispatchingServlet.java:165)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.applyResponse(WireMockHandlerDispatchingServlet.java:154)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet$ServletHttpResponder.respond(WireMockHandlerDispatchingServlet.java:121)
    at com.github.tomakehurst.wiremock.http.AbstractRequestHandler.handle(AbstractRequestHandler.java:63)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.service(WireMockHandlerDispatchingServlet.java:100)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at wiremock.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
    at wiremock.org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)
    at wiremock.org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:364)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
    at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
    at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
    at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at wiremock.org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
    at wiremock.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
    at wiremock.org.eclipse.jetty.server.Server.handle(Server.java:499)
    at wiremock.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
    at wiremock.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
    at wiremock.org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
    at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
    at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
    at java.lang.Thread.run(Thread.java:745)
2017-03-02 11:11:51.043 Outgoing bytes:
686

2017-03-02 11:11:51.044 Problem decoding network traffic
java.nio.charset.MalformedInputException: Input length = 1
    at java.nio.charset.CoderResult.throwException(CoderResult.java:277)
    at java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:798)
    at com.github.tomakehurst.wiremock.http.trafficlistener.ConsoleNotifyingWiremockNetworkTrafficListener.outgoing(ConsoleNotifyingWiremockNetworkTrafficListener.java:34)
    at com.github.tomakehurst.wiremock.jetty9.JettyHttpServer$NetworkTrafficListenerAdapter.outgoing(JettyHttpServer.java:369)
    at wiremock.org.eclipse.jetty.io.NetworkTrafficSelectChannelEndPoint.notifyOutgoing(NetworkTrafficSelectChannelEndPoint.java:144)
    at wiremock.org.eclipse.jetty.io.NetworkTrafficSelectChannelEndPoint.flush(NetworkTrafficSelectChannelEndPoint.java:65)
    at wiremock.org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:408)
    at wiremock.org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:302)
    at wiremock.org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:129)
    at wiremock.org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:684)
    at wiremock.org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:246)
    at wiremock.org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:208)
    at wiremock.org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:480)
    at wiremock.org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:768)
    at wiremock.org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:801)
    at wiremock.org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:147)
    at wiremock.org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:140)
    at wiremock.org.eclipse.jetty.server.HttpOutput.close(HttpOutput.java:171)
    at wiremock.org.eclipse.jetty.servlets.gzip.DeflatedOutputStream.close(DeflatedOutputStream.java:96)
    at wiremock.org.eclipse.jetty.servlets.gzip.AbstractCompressedStream.close(AbstractCompressedStream.java:162)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.writeAndTranslateExceptions(WireMockHandlerDispatchingServlet.java:166)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.applyResponse(WireMockHandlerDispatchingServlet.java:154)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet$ServletHttpResponder.respond(WireMockHandlerDispatchingServlet.java:121)
    at com.github.tomakehurst.wiremock.http.AbstractRequestHandler.handle(AbstractRequestHandler.java:63)
    at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.service(WireMockHandlerDispatchingServlet.java:100)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at wiremock.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
    at wiremock.org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)
    at wiremock.org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:364)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
    at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
    at wiremock.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
    at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
    at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at wiremock.org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
    at wiremock.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
    at wiremock.org.eclipse.jetty.server.Server.handle(Server.java:499)
    at wiremock.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
    at wiremock.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
    at wiremock.org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
    at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
    at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
    at java.lang.Thread.run(Thread.java:745)
2017-03-02 11:11:51.046 Outgoing bytes:
0


2017-03-02 11:11:51.685 Incoming bytes: GET /pools/default?waitChange=0 HTTP/1.1
Authorization: Basic cm91c2VyOnBhc3N3b3Jk
Accept: */*
User-Agent: insomnia/4.2.14
host: localhost:8442
accept-encoding: gzip, deflate
Connection: keep-alive


2017-03-02 11:11:51.686 Proxying: GET http://<my-couchbase-host>:8091/pools/default?waitChange=0
2017-03-02 11:11:51.689 Outgoing bytes: HTTP/1.1 500 Server Error
Cache-Control: must-revalidate,no-cache,no-store
Content-Type: text/html; charset=ISO-8859-1
Content-Length: 395
Connection: close
Server: Jetty(9.2.z-SNAPSHOT)


2017-03-02 11:11:51.690 Outgoing bytes: <html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 500 </title>
</head>
<body>
<h2>HTTP ERROR: 500</h2>
<p>Problem accessing /pools/default. Reason:
<pre>    java.lang.RuntimeException: wiremock.org.apache.http.NoHttpResponseException: The target server failed to respond</pre></p>
<hr /><i><small>Powered by Jetty://</small></i>
</body>
</html>

2017-03-02 11:11:51.691 Closed Socket[addr=/127.0.0.1,port=60484,localport=8442]
2017-03-02 11:11:51.692 Closed Socket[addr=/127.0.0.1,port=60484,localport=8442]

[kagan94]

In my case, we received error “Problem decoding network traffic java.nio.charset.MalformedInputException: Input length = 1” because of GZIP compression that resulted into malformed response on latest WireMock image.

The fix was to disable GZIP compression by adding following parameter to WIREMOCK_OPTIONS:

--disable-gzip

[Joe-Klauza]

Here is the same in Postman, just to support that Insomnia is not affecting the result:

Again, the procedure for this test was:

• GET /pools/default?waitChange=0
• GET /settings/autoFailover