github.com/diamondburned/arikawa@v1.3.14/voice/voicegateway/op.go (about)

     1  package voicegateway
     2  
     3  import (
     4  	"fmt"
     5  	"sync"
     6  
     7  	"github.com/diamondburned/arikawa/utils/json"
     8  	"github.com/diamondburned/arikawa/utils/wsutil"
     9  	"github.com/pkg/errors"
    10  )
    11  
    12  // OPCode represents a Discord Gateway Gateway operation code.
    13  type OPCode = wsutil.OPCode
    14  
    15  const (
    16  	IdentifyOP           OPCode = 0 // send
    17  	SelectProtocolOP     OPCode = 1 // send
    18  	ReadyOP              OPCode = 2 // receive
    19  	HeartbeatOP          OPCode = 3 // send
    20  	SessionDescriptionOP OPCode = 4 // receive
    21  	SpeakingOP           OPCode = 5 // send/receive
    22  	HeartbeatAckOP       OPCode = 6 // receive
    23  	ResumeOP             OPCode = 7 // send
    24  	HelloOP              OPCode = 8 // receive
    25  	ResumedOP            OPCode = 9 // receive
    26  	// ClientDisconnectOP   OPCode = 13 // receive
    27  )
    28  
    29  func (c *Gateway) HandleOP(op *wsutil.OP) error {
    30  	switch op.Code {
    31  	// Gives information required to make a UDP connection
    32  	case ReadyOP:
    33  		if err := unmarshalMutex(op.Data, &c.ready, &c.mutex); err != nil {
    34  			return errors.Wrap(err, "failed to parse READY event")
    35  		}
    36  
    37  	// Gives information about the encryption mode and secret key for sending voice packets
    38  	case SessionDescriptionOP:
    39  		// ?
    40  		// Already handled by Session.
    41  
    42  	// Someone started or stopped speaking.
    43  	case SpeakingOP:
    44  		// ?
    45  		// TODO: handler in Session
    46  
    47  	// Heartbeat response from the server
    48  	case HeartbeatAckOP:
    49  		c.EventLoop.Echo()
    50  
    51  	// Hello server, we hear you! :)
    52  	case HelloOP:
    53  		// ?
    54  		// Already handled on initial connection.
    55  
    56  	// Server is saying the connection was resumed, no data here.
    57  	case ResumedOP:
    58  		wsutil.WSDebug("Gateway connection has been resumed.")
    59  
    60  	default:
    61  		return fmt.Errorf("unknown OP code %d", op.Code)
    62  	}
    63  
    64  	return nil
    65  }
    66  
    67  func unmarshalMutex(d []byte, v interface{}, m *sync.RWMutex) error {
    68  	m.Lock()
    69  	err := json.Unmarshal(d, v)
    70  	m.Unlock()
    71  	return err
    72  }