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feat/requestclient: propagate original User-Agent as X-Forwarded-For-User-Agent#64113
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feat/requestclient: propagate original User-Agent as X-Forwarded-For-User-Agent#64113
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eseliger
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Jul 26, 2024
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We talked through this, seems fine
ggilmore
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Jul 29, 2024
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Propagates a for-reference-only record of the first
User-Agentseen when a request gets into Sourcegraph across services and contexts. This allows telemetry to try and indicate where a request originates from (https://github.com/sourcegraph/sourcegraph/pull/64112), rather than only having the most recent user-agent.A new header and
requestclient.ClientpropertyX-Forwarded-For-User-AgentandForwardedForUserAgentis used to explicitly forward this. Strictly speaking I think we're supposed to just forwardUser-Agentbut it looks like in multiple places we add/clobber theUser-Agentourselves.The gRPC propagator currently sets user-agent on outgoing requests, this change also makes that consistent with the HTTP transport, such that both only explicitly propagate
X-Forwarded-For-User-AgentTest plan
Unit tests