ICAP for HTTP/2

vey-proxy can use ICAP REQMOD and RESPMOD services for HTTP/2 requests and responses.

HTTP/2 requests and responses are first transformed into HTTP/1.1 messages before being sent to the ICAP server. The ICAP server’s response is then converted back into HTTP/2.

See also ICAP Request Headers for the ICAP headers that may be added for all ICAP adaptation requests.

The following protocol-specific headers are added to the ICAP request headers:

• X-Transformed-From

  The value is HTTP/2.0.

• X-HTTP-Upgrade

  The value is the protocol value from the Extended CONNECT request.