pollon

README

pollon - Simple dynamic tcp proxy library

pollon is a simple dynamic tcp proxy library that retrieves the backend destination ip:address from a user defined function and, if it's changed, forcibly closes all connections to the old destination.

simple usage

See the simple example

See also

stolon Stolon uses pollon for its stolon-proxy to enforce that the connections are directed to the right master

Documentation

Index

• func SetLogger(l Logger)
• type ConfData
• type Logger
• type Proxy
  • func NewProxy(listener *net.TCPListener) (*Proxy, error)
  • func (p *Proxy) SetKeepAlive(keepalive bool)
  • func (p *Proxy) SetKeepAliveCount(n int)
  • func (p *Proxy) SetKeepAliveIdle(d time.Duration)
  • func (p *Proxy) SetKeepAliveInterval(d time.Duration)
  • func (p *Proxy) SetupKeepAlive(conn *net.TCPConn) error
  • func (p *Proxy) Start() error
  • func (p *Proxy) Stop()

Functions

func SetLogger

func SetLogger(l Logger)

SetLogger sets the logger used in this package. It should be called only from package user init() functions.

Types

type ConfData

type ConfData struct {
	DestAddr *net.TCPAddr
}

type Logger

type Logger interface {
	Print(args ...interface{})
	Printf(format string, args ...interface{})
	Println(args ...interface{})
}

Logger mimics golang's standard Logger as an interface. Only Print functions are needed.

type Proxy

type Proxy struct {
	C chan ConfData
	// contains filtered or unexported fields
}

func NewProxy

func NewProxy(listener *net.TCPListener) (*Proxy, error)

func (*Proxy) SetKeepAlive

func (p *Proxy) SetKeepAlive(keepalive bool)

func (*Proxy) SetKeepAliveCount

func (p *Proxy) SetKeepAliveCount(n int)

func (*Proxy) SetKeepAliveIdle

func (p *Proxy) SetKeepAliveIdle(d time.Duration)

func (*Proxy) SetKeepAliveInterval

func (p *Proxy) SetKeepAliveInterval(d time.Duration)

func (*Proxy) SetupKeepAlive

func (p *Proxy) SetupKeepAlive(conn *net.TCPConn) error

func (*Proxy) Start

func (p *Proxy) Start() error

func (*Proxy) Stop

func (p *Proxy) Stop()