fix(httpx): Correctly append baggage in async client

sentrivana · sentrivana · commit 4246b02a4807 · 2026-02-25T12:12:36.000+01:00
diff --git a/sentry_sdk/integrations/httpx.py b/sentry_sdk/integrations/httpx.py
@@ -135,11 +135,8 @@ async def send(
                             key=key, value=value, url=request.url
                         )
                     )
-                    if key == BAGGAGE_HEADER_NAME and request.headers.get(
-                        BAGGAGE_HEADER_NAME
-                    ):
-                        # do not overwrite any existing baggage, just append to it
-                        request.headers[key] += "," + value
+                    if key == BAGGAGE_HEADER_NAME:
+                        add_sentry_baggage_to_headers(request.headers, value)
                     else:
                         request.headers[key] = value
 

Original file line number	Diff line number	Diff line change
`@@ -135,11 +135,8 @@ async def send(`
`135`	`135`	`key=key, value=value, url=request.url`
`136`	`136`	`)`
`137`	`137`	`)`
`138`		`- if key == BAGGAGE_HEADER_NAME and request.headers.get(`
`139`		`- BAGGAGE_HEADER_NAME`
`140`		`- ):`
`141`		`- # do not overwrite any existing baggage, just append to it`
`142`		`- request.headers[key] += "," + value`
	`138`	`+ if key == BAGGAGE_HEADER_NAME:`
	`139`	`+ add_sentry_baggage_to_headers(request.headers, value)`
`143`	`140`	`else:`
`144`	`141`	`request.headers[key] = value`
`145`	`142`