[CAMEL-19018] camel-vertx-http: Headers may get erroneously duplicated

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.18.5, 3.20.2, 4.0-M1
• Fix Version/s: 3.18.6, 3.20.3, 3.21.0, 4.0-M2, 4.0.0
• Component/s: camel-vertx-http
• Estimated Complexity: Unknown
• Assignee: James Netherton
• Reporter: James Netherton
• Created: 07/Feb/23 10:33
• Updated: 08/Aug/23 10:11
• Resolved: 07/Feb/23 13:25

Description

Given routes configured like this:

rest()
        .post("/greeting")
        .to("direct:greet")

        .post("/hello")
        .to("direct:hello");

from("direct:greet")
        .removeHeaders("CamelHttp*")
        .to("vertx-http:http://localhost:8080/hello?httpMethod=POST");

from("direct:hello")
        .setBody().simple("Hello ${body}");

When using cURL to POST to /greeting, the response reveals some of the headers get duplicated:

< HTTP/1.1 200 OK
< Accept: */*
< Accept: */*
< User-Agent: curl/7.81.0
< User-Agent: Vert.x-WebClient/4.3.7
< User-Agent: curl/7.81.0
< Content-Length: 17
< Content-Type: [application/json, application/json]

Issue Links

• is related to: CAMEL-19719 camel-rest - Infinite loop when maximumRedeliveries > 0
• links to: GitHub Pull Request #9311