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crypto/tls, runtime: document GODEBUG TLS 1.3 option 

Change-Id: I6801676335924414ce50249df2b7bea08886b203
Reviewed-on: https://go-review.googlesource.com/c/162360
Reviewed-by: Filippo Valsorda <filippo@golang.org>
This commit is contained in:
Brad Fitzpatrick 2019-02-13 16:15:09 +00:00
parent b690d7e513
commit 48bb611667
2 changed files with 10 additions and 1 deletions
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9
src/crypto/tls/tls.go
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@ -4,6 +4,15 @@
// Package tls partially implements TLS 1.2, as specified in RFC 5246, // Package tls partially implements TLS 1.2, as specified in RFC 5246,
// and TLS 1.3, as specified in RFC 8446. // and TLS 1.3, as specified in RFC 8446.
//
// TLS 1.3 is available only on an opt-in basis in Go 1.12. To enable
// it, set the GODEBUG environment variable (comma-separated key=value
// options) such that it includes "tls13=1". To enable it from within
// the process, set the environment variable before any use of TLS:
//
// func init() {
// os.Setenv("GODEBUG", os.Getenv("GODEBUG")+",tls13=1")
// }
package tls package tls
// BUG(agl): The crypto/tls package only implements some countermeasures // BUG(agl): The crypto/tls package only implements some countermeasures

2
src/runtime/extern.go
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@ -127,7 +127,7 @@ It is a comma-separated list of name=val pairs setting these named variables:
IDs will refer to the ID of the goroutine at the time of creation; it's possible for this IDs will refer to the ID of the goroutine at the time of creation; it's possible for this
ID to be reused for another goroutine. Setting N to 0 will report no ancestry information. ID to be reused for another goroutine. Setting N to 0 will report no ancestry information.
The net and net/http packages also refer to debugging variables in GODEBUG. The net, net/http, and crypto/tls packages also refer to debugging variables in GODEBUG.
See the documentation for those packages for details. See the documentation for those packages for details.
The GOMAXPROCS variable limits the number of operating system threads that The GOMAXPROCS variable limits the number of operating system threads that