External processing guide/docs should be reviewed to make sure everyhting is in line with the changes made to enable certain upstream features in this PR
Additionally, the proto comments for these fields need to be updated to not say "NOT IMPLEMENTED"
The upgrade guide for 1.17 needs to call out the breaking change where users of external processing who modify the body need to include a header mutation to set the appropriate Content-Length
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Version
main (1.17.x beta)
Describe the requested changes
External processing guide/docs should be reviewed to make sure everyhting is in line with the changes made to enable certain upstream features in this PR
Additionally, the proto comments for these fields need to be updated to not say "NOT IMPLEMENTED"
The upgrade guide for 1.17 needs to call out the breaking change where users of external processing who modify the body need to include a header mutation to set the appropriate
Content-Length
Link to any relevant existing docs
Browser Information
No response
Additional Context
No response