homelab/traefik
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Use a dynamic buffer to handle client Hello SNI detection

Browse source
This commit is contained in:
Ludovic Fernandez 2021-06-18 19:24:17 +02:00 • committed by GitHub
parent 95e0633b2f
commit 99a23b0414
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

7
pkg/tcp/router.go
View file

@ -15,6 +15,8 @@ import (
"github.com/traefik/traefik/v2/pkg/types" "github.com/traefik/traefik/v2/pkg/types"
) )
const defaultBufSize = 4096
// Router is a TCP router. // Router is a TCP router.
type Router struct { type Router struct {
routingTable map[string]Handler routingTable map[string]Handler
@ -228,6 +230,11 @@ func clientHelloServerName(br *bufio.Reader) (string, bool, string, error) {
} }
recLen := int(hdr[3])<<8 | int(hdr[4]) // ignoring version in hdr[1:3] recLen := int(hdr[3])<<8 | int(hdr[4]) // ignoring version in hdr[1:3]
if recordHeaderLen+recLen > defaultBufSize {
br = bufio.NewReaderSize(br, recordHeaderLen+recLen)
}
helloBytes, err := br.Peek(recordHeaderLen + recLen) helloBytes, err := br.Peek(recordHeaderLen + recLen)
if err != nil { if err != nil {
log.Errorf("Error while Hello: %s", err) log.Errorf("Error while Hello: %s", err)