I use SSL inspection, and installed a few days ago application on one endpoint "battle.bet" . It can not connect properly to servers because of these errors:
2021:06:07-19:10:38 sophos httpproxy[5259]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="http_parser_context_execute" file="http_parser_context.c" line="97" message="Unable to parse a http message of 329 bytes (HPE_INVALID_METHOD: invalid HTTP method)"
2021:06:07-19:12:38 sophos httpproxy[5259]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="http_parser_context_execute" file="http_parser_context.c" line="97" message="Unable to parse a http message of 329 bytes (HPE_INVALID_METHOD: invalid HTTP method)"
The problem is that, such logs dont give you any clues what domains add to SSL exceptions. You only know that something went wrong and is parse error. There is a few topics on forum about this problem but none of them give answer.
For example this method dont work longer: https://community.sophos.com/utm-firewall/f/web-protection-web-filtering-application-visibility-control/79830/debugging-web-proxy-url-parser-request-handler.
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