105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package voice
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import (
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"fmt"
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"github.com/diamondburned/arikawa/utils/json"
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"github.com/diamondburned/arikawa/utils/wsutil"
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"github.com/pkg/errors"
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)
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// OPCode represents a Discord Voice Gateway operation code.
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type OPCode uint8
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const (
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IdentifyOP OPCode = 0 // send
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SelectProtocolOP OPCode = 1 // send
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ReadyOP OPCode = 2 // receive
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HeartbeatOP OPCode = 3 // send
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SessionDescriptionOP OPCode = 4 // receive
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SpeakingOP OPCode = 5 // send/receive
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HeartbeatAckOP OPCode = 6 // receive
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ResumeOP OPCode = 7 // send
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HelloOP OPCode = 8 // receive
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ResumedOP OPCode = 9 // receive
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// ClientDisconnectOP OPCode = 13 // receive
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)
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// OP represents a Discord Voice Gateway operation.
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type OP struct {
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Code OPCode `json:"op"`
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Data json.Raw `json:"d,omitempty"`
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}
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func HandleEvent(c *Connection, ev wsutil.Event) error {
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o, err := DecodeOP(c.Driver, ev)
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if err != nil {
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return err
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}
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return HandleOP(c, o)
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}
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func DecodeOP(driver json.Driver, ev wsutil.Event) (*OP, error) {
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if ev.Error != nil {
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return nil, ev.Error
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}
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if len(ev.Data) == 0 {
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return nil, errors.New("Empty payload")
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}
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var op *OP
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if err := driver.Unmarshal(ev.Data, &op); err != nil {
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return nil, errors.Wrap(err, "OP error: "+string(ev.Data))
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}
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return op, nil
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}
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func HandleOP(c *Connection, op *OP) error {
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switch op.Code {
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// Gives information required to make a UDP connection
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case ReadyOP:
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if err := c.Driver.Unmarshal(op.Data, &c.ready); err != nil {
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return errors.Wrap(err, "Failed to parse READY event")
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}
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c.readyChan <- true
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// Gives information about the encryption mode and secret key for sending voice packets
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case SessionDescriptionOP:
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if err := c.Driver.Unmarshal(op.Data, &c.sessionDescription); err != nil {
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c.ErrorLog(errors.Wrap(err, "Failed to parse SESSION_DESCRIPTION"))
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}
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c.sessionDescChan <- true
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// Someone started or stopped speaking.
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case SpeakingOP:
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// ?
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// Heartbeat response from the server
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case HeartbeatAckOP:
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c.Pacemaker.Echo()
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// Hello server, we hear you! :)
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case HelloOP:
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// Decode the data.
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if err := c.Driver.Unmarshal(op.Data, &c.hello); err != nil {
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c.ErrorLog(errors.Wrap(err, "Failed to parse HELLO"))
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}
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c.helloChan <- true
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// Server is saying the connection was resumed, no data here.
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case ResumedOP:
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WSDebug("Voice connection has been resumed")
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default:
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return fmt.Errorf("unknown OP code %d", op.Code)
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}
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return nil
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}
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