transport

Documentation

Overview

Package transport implements various HTTP transport utilities based on Go net package.

Package transport provides network utility functions, complementing the more common ones in the net package.

Index

• Variables
• func IsClosedConnError(err error) bool
• func LimitListener(l net.Listener, n int) net.Listener
• func NewKeepAliveListener(l net.Listener, scheme string, tlscfg *tls.Config) (net.Listener, error)
• func NewListener(addr, scheme string, tlsinfo *TLSInfo) (l net.Listener, err error)
• func NewTLSListener(l net.Listener, tlsinfo *TLSInfo) (net.Listener, error)
• func NewTimeoutListener(addr string, scheme string, tlsinfo *TLSInfo, ...) (net.Listener, error)
• func NewTimeoutTransport(info TLSInfo, dialtimeoutd, rdtimeoutd, wtimeoutd time.Duration) (*http.Transport, error)
• func NewTransport(info TLSInfo, dialtimeoutd time.Duration) (*http.Transport, error)
• func NewUnixListener(addr string) (net.Listener, error)
• func ValidateSecureEndpoints(tlsInfo TLSInfo, eps []string) ([]string, error)
• type TLSInfo
  • func SelfCert(lg *zap.Logger, dirpath string, hosts []string) (info TLSInfo, err error)
  • func (info TLSInfo) ClientConfig() (*tls.Config, error)
  • func (info TLSInfo) Empty() bool
  • func (info TLSInfo) ServerConfig() (*tls.Config, error)
  • func (info TLSInfo) String() string

Variables

var (
	ErrNotTCP = errors.New("only tcp connections have keepalive")
)

Functions

func IsClosedConnError

func IsClosedConnError(err error) bool

IsClosedConnError returns true if the error is from closing listener, cmux. copied from golang.org/x/net/http2/http2.go

func LimitListener

func LimitListener(l net.Listener, n int) net.Listener

LimitListener returns a Listener that accepts at most n simultaneous connections from the provided Listener.

func NewKeepAliveListener

func NewKeepAliveListener(l net.Listener, scheme string, tlscfg *tls.Config) (net.Listener, error)

NewKeepAliveListener returns a listener that listens on the given address. Be careful when wrap around KeepAliveListener with another Listener if TLSInfo is not nil. Some pkgs (like go/http) might expect Listener to return TLSConn type to start TLS handshake. http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html

func NewListener

func NewListener(addr, scheme string, tlsinfo *TLSInfo) (l net.Listener, err error)

NewListener creates a new listner.

func NewTLSListener

func NewTLSListener(l net.Listener, tlsinfo *TLSInfo) (net.Listener, error)

NewTLSListener handshakes TLS connections and performs optional CRL checking.

func NewTimeoutListener

func NewTimeoutListener(addr string, scheme string, tlsinfo *TLSInfo, rdtimeoutd, wtimeoutd time.Duration) (net.Listener, error)

NewTimeoutListener returns a listener that listens on the given address. If read/write on the accepted connection blocks longer than its time limit, it will return timeout error.

func NewTimeoutTransport

func NewTimeoutTransport(info TLSInfo, dialtimeoutd, rdtimeoutd, wtimeoutd time.Duration) (*http.Transport, error)

NewTimeoutTransport returns a transport created using the given TLS info. If read/write on the created connection blocks longer than its time limit, it will return timeout error. If read/write timeout is set, transport will not be able to reuse connection.

func NewTransport

func NewTransport(info TLSInfo, dialtimeoutd time.Duration) (*http.Transport, error)

func NewUnixListener

func NewUnixListener(addr string) (net.Listener, error)

func ValidateSecureEndpoints

func ValidateSecureEndpoints(tlsInfo TLSInfo, eps []string) ([]string, error)

ValidateSecureEndpoints scans the given endpoints against tls info, returning only those endpoints that could be validated as secure.

Types

type TLSInfo

type TLSInfo struct {
	CertFile           string
	KeyFile            string
	TrustedCAFile      string
	ClientCertAuth     bool
	CRLFile            string
	InsecureSkipVerify bool

	// ServerName ensures the cert matches the given host in case of discovery / virtual hosting
	ServerName string

	// HandshakeFailure is optionally called when a connection fails to handshake. The
	// connection will be closed immediately afterwards.
	HandshakeFailure func(*tls.Conn, error)

	// CipherSuites is a list of supported cipher suites.
	// If empty, Go auto-populates it by default.
	// Note that cipher suites are prioritized in the given order.
	CipherSuites []uint16

	// AllowedCN is a CN which must be provided by a client.
	AllowedCN string

	// Logger logs TLS errors.
	// If nil, all logs are discarded.
	Logger *zap.Logger
	// contains filtered or unexported fields
}

func SelfCert

func SelfCert(lg *zap.Logger, dirpath string, hosts []string) (info TLSInfo, err error)

func (TLSInfo) ClientConfig

func (info TLSInfo) ClientConfig() (*tls.Config, error)

ClientConfig generates a tls.Config object for use by an HTTP client.

func (TLSInfo) Empty

func (info TLSInfo) Empty() bool

func (TLSInfo) ServerConfig

func (info TLSInfo) ServerConfig() (*tls.Config, error)

ServerConfig generates a tls.Config object for use by an HTTP server.

func (TLSInfo) String

func (info TLSInfo) String() string