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crypto/tls: remove tls10default GODEBUG flag

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Updates #45428

Change-Id: Ic2ff459e6a3f1e8ded2a770c11d34067c0b39a8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/400974
Reviewed-by: Filippo Valsorda <valsorda@google.com>
Auto-Submit: Filippo Valsorda <valsorda@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Filippo Valsorda <valsorda@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
This commit is contained in:
Filippo Valsorda 2022-04-19 06:26:53 -04:00 committed by Gopher Robot
parent 0b5218cf4e
commit f0ee7fda63
3 changed files with 11 additions and 15 deletions
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10
doc/go1.19.html
View File

@ -92,6 +92,16 @@ Do not send CLs removing the interior tags from such phrases.
TODO: complete this section
</p>
<dl id="crypto/tls"><dt><a href="/pkg/crypto/tls/">crypto/tls</a></dt>
<dd>
<p><!-- CL 400974 -->
The <code>tls10default</code> <code>GODEBUG</code> option has been
removed. It is still possible to enable TLS 1.0 client-side by setting
<code>Config.MinVersion</code>.
</p>
</dd>
</dl><!-- crypto/tls -->
<dl id="image/draw"><dt><a href="/pkg/image/draw/">image/draw</a></dt>
<dd>
<p><!-- CL 396795 -->

6
src/crypto/tls/common.go
View File

@ -18,7 +18,6 @@ import (
"crypto/x509"
"errors"
"fmt"
"internal/godebug"
"io"
"net"
"strings"
@ -974,9 +973,6 @@ var supportedVersions = []uint16{
VersionTLS10,
}
// debugEnableTLS10 enables TLS 1.0. See issue 45428.
var debugEnableTLS10 = godebug.Get("tls10default") == "1"
// roleClient and roleServer are meant to call supportedVersions and parents
// with more readability at the callsite.
const roleClient = true
@ -985,7 +981,7 @@ const roleServer = false
func (c *Config) supportedVersions(isClient bool) []uint16 {
versions := make([]uint16, 0, len(supportedVersions))
for _, v := range supportedVersions {
if (c == nil || c.MinVersion == 0) && !debugEnableTLS10 &&
if (c == nil || c.MinVersion == 0) &&
isClient && v < VersionTLS12 {
continue
}

10
src/crypto/tls/handshake_server_test.go
View File

@ -400,16 +400,6 @@ func TestVersion(t *testing.T) {
if err == nil {
t.Fatalf("expected failure to connect with TLS 1.0/1.1")
}
defer func(old bool) { debugEnableTLS10 = old }(debugEnableTLS10)
debugEnableTLS10 = true
_, _, err = testHandshake(t, clientConfig, serverConfig)
if err != nil {
t.Fatalf("handshake failed: %s", err)
}
if state.Version != VersionTLS11 {
t.Fatalf("incorrect version %x, should be %x", state.Version, VersionTLS11)
}
}
func TestCipherSuitePreference(t *testing.T) {