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Randomly select front domain from comma-separated list

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This commmit changes the command-line and Bridge line arguments to take
a comma-separated list of front domains. The change is backwards
compatible with old Bridge and ClientTransportPlugin lines. At
rendezvous time, a front domain will be randomly chosen from the list.
This commit is contained in:
Cecylia Bocovich 2023-09-23 10:46:46 -04:00
parent 5cdf52c813
commit 9fdfb3d1b5
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GPG key ID: 009DE379FD9B7B90
7 changed files with 65 additions and 48 deletions
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10
client/lib/snowflake.go
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@ -85,11 +85,14 @@ type ClientConfig struct {
// AmpCacheURL is the full URL of a valid AMP cache. A nonzero value indicates
// that AMP cache will be used as the rendezvous method with the broker.
AmpCacheURL string
// FrontDomain is a the full URL of an optional front domain that can be used with either
// FrontDomain is the full URL of an optional front domain that can be used with either
// the AMP cache or HTTP domain fronting rendezvous method.
FrontDomain string
// ICEAddresses are a slice of ICE server URLs that will be used for NAT traversal and
// the creation of the client's WebRTC SDP offer.
FrontDomains []string
// ICEAddresses are a slice of ICE server URLs that will be used for NAT traversal and
// the creation of the client's WebRTC SDP offer.
ICEAddresses []string
// KeepLocalAddresses is an optional setting that will prevent the removal of local or
// invalid addresses from the client's SDP offer. This is useful for local deployments
@ -134,6 +137,11 @@ func NewSnowflakeClient(config ClientConfig) (*Transport, error) {
log.Printf("url: %v", strings.Join(server.URLs, " "))
}
// Maintain backwards compatability with old FrontDomain field of ClientConfig
if (len(config.FrontDomains) == 0) && (config.FrontDomain != "") {
config.FrontDomains = []string{config.FrontDomain}
}
// Rendezvous with broker using the given parameters.
broker, err := newBrokerChannelFromConfig(config)
if err != nil {