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Introduce an unexported newBrokerChannelFromConfig

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A follow-up wants to pass in a new property from the ClientConfig but it
would be an API breaking change to NewBrokerChannel.

However, it's unclear why NewBrokerChannel is exported at all.  No other
package in the repo depends on it and the known users of the library
probably wouldn't be construct them.

While this patch was being reviewed, a new constructor was added,
NewBrokerChannelWithUTLSSettings, with effectively the same issue.
Both of those exported ones are deleted here.
This commit is contained in:
Arlo Breault 2022-03-10 14:13:35 -05:00
parent 829cacac5f
commit bd636a1374
2 changed files with 17 additions and 25 deletions
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38
client/lib/rendezvous.go
View file

@ -55,40 +55,34 @@ func createBrokerTransport() http.RoundTripper {
return transport
}
func NewBrokerChannel(broker, ampCache, front string, keepLocalAddresses bool) (*BrokerChannel, error) {
return NewBrokerChannelWithUTLSSettings(broker, ampCache, front, keepLocalAddresses, "", false)
}
func newBrokerChannelFromConfig(config ClientConfig) (*BrokerChannel, error) {
log.Println("Rendezvous using Broker at:", config.BrokerURL)
// NewBrokerChannelWithUTLSSettings construct a new BrokerChannel, where:
// |broker| is the full URL of the facilitating program which assigns proxies
// to clients, and |front| is the option fronting domain.
func NewBrokerChannelWithUTLSSettings(broker, ampCache, front string, keepLocalAddresses bool,
uTLSClientID string, removeSNI bool) (*BrokerChannel, error) {
log.Println("Rendezvous using Broker at:", broker)
if ampCache != "" {
log.Println("Through AMP cache at:", ampCache)
}
if front != "" {
log.Println("Domain fronting using:", front)
if config.FrontDomain != "" {
log.Println("Domain fronting using:", config.FrontDomain)
}
brokerTransport := createBrokerTransport()
if uTLSClientID != "" {
utlsClientHelloID, err := utlsutil.NameToUTLSID(uTLSClientID)
if config.UTLSClientID != "" {
utlsClientHelloID, err := utlsutil.NameToUTLSID(config.UTLSClientID)
if err != nil {
return nil, fmt.Errorf("unable to create broker channel: %v", err)
}
config := &utls.Config{}
brokerTransport = utlsutil.NewUTLSHTTPRoundTripper(utlsClientHelloID, config, brokerTransport, removeSNI)
utlsConfig := &utls.Config{}
brokerTransport = utlsutil.NewUTLSHTTPRoundTripper(utlsClientHelloID, utlsConfig, brokerTransport, config.UTLSRemoveSNI)
}
var rendezvous RendezvousMethod
var err error
if ampCache != "" {
rendezvous, err = newAMPCacheRendezvous(broker, ampCache, front, brokerTransport)
if config.AmpCacheURL != "" {
log.Println("Through AMP cache at:", config.AmpCacheURL)
rendezvous, err = newAMPCacheRendezvous(
config.BrokerURL, config.AmpCacheURL, config.FrontDomain,
brokerTransport)
} else {
rendezvous, err = newHTTPRendezvous(broker, front, brokerTransport)
rendezvous, err = newHTTPRendezvous(
config.BrokerURL, config.FrontDomain, brokerTransport)
}
if err != nil {
return nil, err
@ -96,7 +90,7 @@ func NewBrokerChannelWithUTLSSettings(broker, ampCache, front string, keepLocalA
return &BrokerChannel{
Rendezvous: rendezvous,
keepLocalAddresses: keepLocalAddresses,
keepLocalAddresses: config.KeepLocalAddresses,
natType: nat.NATUnknown,
}, nil
}