client

Documentation

Index

• func MaxReconnectAttempts(max int) func(*WSClient)
• func OnReconnect(cb func()) func(*WSClient)
• func PingPeriod(pingPeriod time.Duration) func(*WSClient)
• func ReadWait(readWait time.Duration) func(*WSClient)
• func WriteWait(writeWait time.Duration) func(*WSClient)
• type HTTPClient
• type JSONRPCClient
  • func NewJSONRPCClient(remote string) *JSONRPCClient
  • func (c *JSONRPCClient) Call(method string, params map[string]interface{}, result interface{}) (interface{}, error)
• type URIClient
  • func NewURIClient(remote string) *URIClient
  • func (c *URIClient) Call(method string, params map[string]interface{}, result interface{}) (interface{}, error)
• type WSClient
  • func NewWSClient(remoteAddr, endpoint string, options ...func(*WSClient)) *WSClient
  • func (c *WSClient) Call(ctx context.Context, method string, params map[string]interface{}) error
  • func (c *WSClient) CallWithArrayParams(ctx context.Context, method string, params []interface{}) error
  • func (c *WSClient) IsActive() bool
  • func (c *WSClient) IsReconnecting() bool
  • func (c *WSClient) OnStart() error
  • func (c *WSClient) OnStop()
  • func (c *WSClient) Send(ctx context.Context, request types.RPCRequest) error
  • func (c *WSClient) Stop() error
  • func (c *WSClient) String() string
  • func (c *WSClient) Subscribe(ctx context.Context, query string) error
  • func (c *WSClient) Unsubscribe(ctx context.Context, query string) error
  • func (c *WSClient) UnsubscribeAll(ctx context.Context) error

Functions

func MaxReconnectAttempts

func MaxReconnectAttempts(max int) func(*WSClient)

MaxReconnectAttempts sets the maximum number of reconnect attempts before returning an error. It should only be used in the constructor and is not Goroutine-safe.

func OnReconnect

func OnReconnect(cb func()) func(*WSClient)

OnReconnect sets the callback, which will be called every time after successful reconnect.

func PingPeriod

func PingPeriod(pingPeriod time.Duration) func(*WSClient)

PingPeriod sets the duration for sending websocket pings. It should only be used in the constructor - not Goroutine-safe.

func ReadWait

func ReadWait(readWait time.Duration) func(*WSClient)

ReadWait sets the amount of time to wait before a websocket read times out. It should only be used in the constructor and is not Goroutine-safe.

func WriteWait

func WriteWait(writeWait time.Duration) func(*WSClient)

WriteWait sets the amount of time to wait before a websocket write times out. It should only be used in the constructor and is not Goroutine-safe.

Types

type HTTPClient

type HTTPClient interface {
	Call(method string, params map[string]interface{}, result interface{}) (interface{}, error)
}

HTTPClient is a common interface for JSONRPCClient and URIClient.

type JSONRPCClient

type JSONRPCClient struct {
	// contains filtered or unexported fields
}

JSONRPCClient takes params as a slice

func NewJSONRPCClient

func NewJSONRPCClient(remote string) *JSONRPCClient

NewJSONRPCClient returns a JSONRPCClient pointed at the given address.

func (*JSONRPCClient) Call

func (c *JSONRPCClient) Call(method string, params map[string]interface{}, result interface{}) (interface{}, error)

type URIClient

type URIClient struct {
	// contains filtered or unexported fields
}

URI takes params as a map

func NewURIClient

func NewURIClient(remote string) *URIClient

func (*URIClient) Call

func (c *URIClient) Call(method string, params map[string]interface{}, result interface{}) (interface{}, error)

type WSClient

type WSClient struct {
	cmn.BaseService

	Address  string // IP:PORT or /path/to/socket
	Endpoint string // /websocket/url/endpoint
	Dialer   func(string, string) (net.Conn, error)

	// Time between sending a ping and receiving a pong. See
	// https://godoc.org/github.com/rcrowley/go-metrics#Timer.
	PingPongLatencyTimer metrics.Timer

	// Single user facing channel to read RPCResponses from, closed only when the client is being stopped.
	ResponsesCh chan types.RPCResponse
	// contains filtered or unexported fields
}

WSClient is a WebSocket client. The methods of WSClient are safe for use by multiple goroutines.

func NewWSClient

func NewWSClient(remoteAddr, endpoint string, options ...func(*WSClient)) *WSClient

NewWSClient returns a new client. See the commentary on the func(*WSClient) functions for a detailed description of how to configure ping period and pong wait time. The endpoint argument must begin with a `/`.

func (*WSClient) Call

func (c *WSClient) Call(ctx context.Context, method string, params map[string]interface{}) error

Call the given method. See Send description.

func (*WSClient) CallWithArrayParams

func (c *WSClient) CallWithArrayParams(ctx context.Context, method string, params []interface{}) error

CallWithArrayParams the given method with params in a form of array. See Send description.

func (*WSClient) IsActive

func (c *WSClient) IsActive() bool

IsActive returns true if the client is running and not reconnecting.

func (*WSClient) IsReconnecting

func (c *WSClient) IsReconnecting() bool

IsReconnecting returns true if the client is reconnecting right now.

func (*WSClient) OnStart

func (c *WSClient) OnStart() error

OnStart implements cmn.Service by dialing a server and creating read and write routines.

func (*WSClient) OnStop

func (c *WSClient) OnStop()

OnStop implements cmn.Service.

func (*WSClient) Send

func (c *WSClient) Send(ctx context.Context, request types.RPCRequest) error

Send the given RPC request to the server. Results will be available on ResponsesCh, errors, if any, on ErrorsCh. Will block until send succeeds or ctx.Done is closed.

func (*WSClient) Stop

func (c *WSClient) Stop() error

Stop overrides cmn.Service#Stop. There is no other way to wait until Quit channel is closed.

func (*WSClient) String

func (c *WSClient) String() string

String returns WS client full address.

func (*WSClient) Subscribe

func (c *WSClient) Subscribe(ctx context.Context, query string) error

Subscribe to a query. Note the server must have a "subscribe" route defined.

func (*WSClient) Unsubscribe

func (c *WSClient) Unsubscribe(ctx context.Context, query string) error

Unsubscribe from a query. Note the server must have a "unsubscribe" route defined.

func (*WSClient) UnsubscribeAll

func (c *WSClient) UnsubscribeAll(ctx context.Context) error

UnsubscribeAll from all. Note the server must have a "unsubscribe_all" route defined.