[TT-10472] CORS.options_passthrough breaks URLRewriteMiddleware

[jakub-bochenski]

Branch/Environment/Version

• Branch/Version: v5.1
• Environment: On-prem

Describe the bug
If I enable options_passthrough the URLRewriteMiddleware activates but fails to rewrite the URL (see Actual Behaviour).
If I disable options_passthrough the URLRewriteMiddleware activates and rewrites the URL as expected (see Expected Behaviour)

Reproduction steps
Steps to reproduce the behavior:

1. Add api
2. Define URL rewrites (also for OPTIONS method)
3. set CORS.options_passthrough to true

Actual behavior

tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:27:58" level=debug msg=Started api_id=platform api_name=Platform mw=URLRewriteMiddleware org_id=default origin=172.19.0.1 path=/platform/v1/29353/relations/resolved-relations ts=1697732878403807249
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:27:58" level=debug msg="Started proxy"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:27:58" level=debug msg="Stripping proxy listen path: /platform/"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:27:58" level=debug msg="Upstream path is: /v1/29353/relations/resolved-relations"

Expected behavior

tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg=Started api_id=platform api_name=Platform mw=URLRewriteMiddleware org_id=default origin=172.19.0.1 path=/platform/v1/29353/relations/resolved-relations ts=1697733092442978915
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Rewriter active"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="/platform/v1/29353/relations/resolved-relations?include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Inbound path: /platform/v1/29353/relations/resolved-relations?include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Rewriter checking matches, len is: 1"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="[[/platform/v1/29353/relations/resolved-relations?include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S 29353 include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S]]"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="[[$1] [$2]]"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="URL Re-written from: /platform/v1/29353/relations/resolved-relations?include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="URL Re-written to: search/relations/results/gateway?projectId=29353&include-tags=%5B%7B%22tag%22%3A%22MultiLang%20Configurator%22%2C%22limitPerRelation%22%3A3%7D%5D&limit=3&product-id=043.250S"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg=Finished api_id=platform api_name=Platform code=200 mw=URLRewriteMiddleware ns=79317 org_id=default origin=172.19.0.1 path=/platform/v1/29353/relations/resolved-relations
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Started proxy"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Stripping proxy listen path: /platform/"
tyk-gateway-docker-tyk-gateway-1  | time="Oct 19 16:31:32" level=debug msg="Upstream path is: /search/relations/results/gateway"

Screenshots/Video

Logs (debug mode or log file):
See above

[andyo-tyk]

Hi @jakub-bochenski,

Thanks for flagging this - I've raised a ticket internally and we will take a look at this when we're next in this area of the code.

Thanks again for supporting Tyk!