spring data elastic search Not a valid protocol version: This is not an HTTP port

Question

I have the following elastic-search container configuration in my test case

    @Container
    public static  GenericContainer container = new GenericContainer<>("elasticsearch:7.7.0")
        .withExposedPorts(9200,9300).withEnv("discovery.type","single-node")
        .withNetwork(Network.newNetwork())
        .withNetworkAliases("someNetwork");

In a @BeforeAll annotated method I elasticsearch url property like this

System.setProperty("spring.data.elasticsearch.cluster-nodes", container.getContainerIpAddress() + ":" + container.getMappedPort(9300));

From power shell when I check the running containers (during the test case debug pause), I find something like this under ports column : 0.0.0.0:32844->9200/tcp, 0.0.0.0:32843->9300/tcp When I print container.getContainerIpAddress() + ":" + container.getMappedPort(9300), I get the same port mapped to 9300 in the container ports column, in this case localhost:32843, for sure the port is random and get changed in every new run.

when the code `conf = repo.save(conf); run, I get the following exception:

Caused by: org.apache.http.ProtocolException: Not a valid protocol version: This is not an HTTP port at org.apache.http.impl.nio.codecs.AbstractMessageParser.parse(AbstractMessageParser.java:209) at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:245) at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81) at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39) at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:114) at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315) at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276) at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104) at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.apache.http.ParseException: Not a valid protocol version: This is not an HTTP port at org.apache.http.message.BasicLineParser.parseProtocolVersion(BasicLineParser.java:148) at org.apache.http.message.BasicLineParser.parseStatusLine(BasicLineParser.java:366) at org.apache.http.impl.nio.codecs.DefaultHttpResponseParser.createMessage(DefaultHttpResponseParser.java:112) at org.apache.http.impl.nio.codecs.DefaultHttpResponseParser.createMessage(DefaultHttpResponseParser.java:50) at org.apache.http.impl.nio.codecs.AbstractMessageParser.parseHeadLine(AbstractMessageParser.java:156) at org.apache.http.impl.nio.codecs.AbstractMessageParser.parse(AbstractMessageParser.java:207) ... 11 more

`

Answer 1

You are using a REST client to access Elasticsearch on port 9300. This is the port for the TransportClient. Wit a REST client you need to target port 9200.