Symantec Web Gateway (SWG) proxy accepts HTTP 1.1 requests from clients but some features of HTTP 1.1 are unavailable and outbound HTTP requests from SWG proxy use HTTP 1.0.
The SWG proxy does not support some aspects of the HTTP 1.1 protocol specifically 1xx informational status codes and the use of “Transfer-Encoding: chunked” encoding on CONNECT requests.
The SWG HTTP/HTTPS proxy accepts both HTTP v1.0 and HTTP v1.1 requests from clients but translates these requests to their HTTP v1.0 equivalent when making the request to the destination web server. This prevents the web server from returning response codes in the 1xx range when responding to SWG as those response codes are not defined in the HTTP v1.0 specification (RFC 1945).
Symantec is aware of this situation and will update this document when a solution becomes available. It is not necessary to log a support case on this issue. Please subscribe to this article to be notified of any updates.
Imported Document ID: TECH174361
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