[BUG]: 'baggage' header overriden in http requests #5472
Description
Tracer Version(s)
2.17.0
Ruby Version(s)
ruby 3.3.10 (2025-10-23 revision 343ea05002) [x86_64-linux]
Relevent Library and Version(s)
No response
Bug Report
The datadog tracing gem doesn't respect existing items in the baggage http header. According to the baggage spec , multiple baggage headers should be merged instead of being overwritten.
Reproduction Code
No response
Configuration Block
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Error Logs
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Operating System
No response
How does Datadog help you?
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