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[appendix]
== Migrating from Gun 1.1 to 1.2
Gun 1.2 adds support for the CONNECT request over HTTP/1.1
connections.
=== Features added
* CONNECT requests can now be issued on HTTP/1.1 connections.
The tunneled connection can use any of the protocols Gun
supports: HTTP/1.1, HTTP/2 and Websocket over both TCP and
TLS transports. Note that Gun currently does not support
tunneling a TLS connection over a TLS connection due to
limitations in Erlang/OTP.
* Gun supports sending multiple CONNECT requests, allowing
the tunnel to the origin server to go through multiple
proxies.
* Gun supports sending CONNECT requests with authorization
credentials using the Basic authentication mechanism.
* Update Cowlib to 2.6.0
=== Functions added
* The functions `gun:connect/2,3,4` have been added. They can
be used to initiate CONNECT requests on HTTP/1.1 connections.
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