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NPN/ALPN: allow disabling via command line

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when using --http2 one can now selectively disable NPN or ALPN with
--no-alpn and --no-npn. for now honored with NSS only.

TODO: honor this option with GnuTLS and OpenSSL
This commit is contained in:
Fabian Frank
2014-02-09 23:38:55 -08:00
committed by Daniel Stenberg
parent 70bd9784de
commit 909a68c121
11 changed files with 87 additions and 19 deletions
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12
docs/curl.1
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@@ -133,6 +133,18 @@ version. (Added in 7.33.0)
.IP "--http2"
(HTTP) Tells curl to issue its requests using HTTP 2. This requires that the
underlying libcurl was built to support it. (Added in 7.33.0)
.IP "--no-npn"
Disable the NPN TLS extension. NPN is enabled by default if libcurl was built
with an SSL library that supports NPN. NPN is used by a libcurl that supports
HTTP 2 to negoatiate HTTP 2 support with the server during https sessions.
(Added in 7.36.0)
.IP "--no-alpn"
Disable the ALPN TLS extension. ALPN is enabled by default if libcurl was built
with an SSL library that supports ALPN. ALPN is used by a libcurl that supports
HTTP 2 to negoatiate HTTP 2 support with the server during https sessions.
(Added in 7.36.0)
.IP "-1, --tlsv1"
(SSL)
Forces curl to use TLS version 1 when negotiating with a remote TLS server.