Stephan Siano created CAMEL-11662:
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Summary: camel-ahc does not support multi-value HTTP headers
properly
Key: CAMEL-11662
URL: https://issues.apache.org/jira/browse/CAMEL-11662
Project: Camel
Issue Type: Bug
Components: camel-ahc
Affects Versions: 2.19.1
Reporter: Stephan Siano
Assignee: Stephan Siano
Priority: Minor
Fix For: 2.20.0
The camel-ahc component does not support multi-value HTTP headers properly.
If the camel message contains a header with a list value the list is converted
into a String before setting it to a header, which is not the proper format for
a multi-value http header.
Example: If the camel header named "to" has a value of type List<String>, which
contains the elements "foo" and "bar" the generated HTTP header named "to" will
have the value "[ foo, bar]"
According to RFC 7230 section 3.2.2 this is the wrong format. There should be a
single line generated from it, but the list should simply be comma separated
("foo,bar" without the square brackets).
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