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feat: specific case for GREASE and ALPS

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Will automatically add "h2" to ALPS and write to log when GREASE extension is imported in `ImportTLSClientHello()`
This commit is contained in:
Gaukas Wang 2023-02-26 08:43:06 -07:00
parent fb742616ca
commit 9351f1957f
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GPG key ID: 9E2F8986D76F8B5D
1 changed files with 10 additions and 1 deletions
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11
u_common.go
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@ -279,7 +279,7 @@ func (chs *ClientHelloSpec) ImportTLSClientHello(data map[string][]byte, keepPSK
for _, extType := range tlsExtensionTypes {
extension := ExtensionIDToExtension(extType)
if extension == nil {
log.Printf("[Warning] Unsupported extension %d", extType)
log.Printf("[Warning] Unsupported extension %d added as a &GenericExtension without Data", extType)
chs.Extensions = append(chs.Extensions, &GenericExtension{extType, []byte{}})
} else {
if extType == extensionSupportedVersions {
@ -355,6 +355,15 @@ func (chs *ClientHelloSpec) ImportTLSClientHello(data map[string][]byte, keepPSK
if err != nil {
return err
}
case utlsExtensionApplicationSettings:
// TODO: tlsfingerprint.io should also provide application settings data
extension.(*ApplicationSettingsExtension).SupportedProtocols = []string{"h2"}
default:
if isGREASEUint16(extType) {
log.Printf("[Info] GREASE extension added without specifying Value or Data. It will be automatically re-GREASEd on ApplyPreset() call.")
} else {
log.Printf("[Warning] extension %d added without data", extType)
}
}
chs.Extensions = append(chs.Extensions, extension)
}