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// +build !js
package webrtc
import (
"github.com/pion/ice/v2"
"github.com/pion/webrtc/v3/pkg/rtcerr"
)
// ICEServer describes a single STUN and TURN server that can be used by
// the ICEAgent to establish a connection with a peer.
type ICEServer struct {
URLs []string `json:"urls"`
Username string `json:"username,omitempty"`
Credential interface{} `json:"credential,omitempty"`
CredentialType ICECredentialType `json:"credentialType,omitempty"`
}
func (s ICEServer) parseURL(i int) (*ice.URL, error) {
return ice.ParseURL(s.URLs[i])
}
func (s ICEServer) validate() error {
_, err := s.urls()
return err
}
func (s ICEServer) urls() ([]*ice.URL, error) {
urls := []*ice.URL{}
for i := range s.URLs {
url, err := s.parseURL(i)
if err != nil {
return nil, &rtcerr.InvalidAccessError{Err: err}
}
if url.Scheme == ice.SchemeTypeTURN || url.Scheme == ice.SchemeTypeTURNS {
// https://www.w3.org/TR/webrtc/#set-the-configuration (step #11.3.2)
if s.Username == "" || s.Credential == nil {
return nil, &rtcerr.InvalidAccessError{Err: ErrNoTurnCredentials}
}
url.Username = s.Username
switch s.CredentialType {
case ICECredentialTypePassword:
// https://www.w3.org/TR/webrtc/#set-the-configuration (step #11.3.3)
password, ok := s.Credential.(string)
if !ok {
return nil, &rtcerr.InvalidAccessError{Err: ErrTurnCredentials}
}
url.Password = password
case ICECredentialTypeOauth:
// https://www.w3.org/TR/webrtc/#set-the-configuration (step #11.3.4)
if _, ok := s.Credential.(OAuthCredential); !ok {
return nil, &rtcerr.InvalidAccessError{Err: ErrTurnCredentials}
}
default:
return nil, &rtcerr.InvalidAccessError{Err: ErrTurnCredentials}
}
}
urls = append(urls, url)
}
return urls, nil
}
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