138 lines
3.8 KiB
Go
138 lines
3.8 KiB
Go
package telebit
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import (
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"bufio"
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"fmt"
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"net"
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"time"
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)
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var encryptedSchemes = map[string]struct{}{
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"tls": struct{}{},
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"https": struct{}{},
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"wss": struct{}{},
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"smtps": struct{}{},
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}
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// Conn TODO rename to Pipe, perhaps?
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type Conn struct {
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relaySourceAddr Addr
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relayTargetAddr Addr
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peeker *bufio.Reader
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relay net.Conn
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local net.Conn
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//terminated bool
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//updated time.Time
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}
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// TODO conn.go -> conn/conn.go
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// TODO NewConn -> New
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/*
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// NewConn checks to see if the connection is already terminated and such
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func NewConn(conn *Conn) *Conn {
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conn.relayTargetAddr.scheme
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return conn
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}
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*/
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// Read reads data from the connection.
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// Read can be made to time out and return an Error with Timeout() == true
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// after a fixed time limit; see SetDeadline and SetReadDeadline.
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func (c *Conn) Read(b []byte) (n int, err error) {
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if nil != c.peeker {
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return c.peeker.Read(b)
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}
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return c.relay.Read(b)
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}
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func (c *Conn) Peek(n int) (b []byte, err error) {
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if nil == c.peeker {
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c.peeker = bufio.NewReaderSize(c.relay, defaultPeekerSize)
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}
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return c.peeker.Peek(n)
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}
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// Write writes data to the connection.
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// Write can be made to time out and return an Error with Timeout() == true
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// after a fixed time limit; see SetDeadline and SetWriteDeadline.
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func (c *Conn) Write(b []byte) (n int, err error) {
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return c.relay.Write(b)
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}
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// Close closes the connection.
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// Any blocked Read or Write operations will be unblocked and return errors.
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func (c *Conn) Close() error {
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return c.relay.Close()
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}
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/*
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// Error signals an error back to the relay
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func (c *Conn) Error(err error) error {
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panic(errors.New("not implemented"))
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return nil
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}
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*/
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/*
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// LocalAddr returns the local network address.
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func (c *Conn) LocalAddr() net.Addr {
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panic(errors.New("not implemented"))
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return &net.IPAddr{}
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}
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*/
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// LocalAddr returns the local network address.
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func (c *Conn) LocalAddr() net.Addr {
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fmt.Println("[warn] LocalAddr() address source/target switch?")
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return &c.relaySourceAddr
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}
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// RemoteAddr returns the remote network address.
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func (c *Conn) RemoteAddr() net.Addr {
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fmt.Println("[warn] RemoteAddr() address source/target switch?")
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return &c.relayTargetAddr
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}
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// SetDeadline sets the read and write deadlines associated
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// with the connection. It is equivalent to calling both
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// SetReadDeadline and SetWriteDeadline.
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//
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// A deadline is an absolute time after which I/O operations
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// fail with a timeout (see type Error) instead of
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// blocking. The deadline applies to all future and pending
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// I/O, not just the immediately following call to Read or
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// Write. After a deadline has been exceeded, the connection
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// can be refreshed by setting a deadline in the future.
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//
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// An idle timeout can be implemented by repeatedly extending
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// the deadline after successful Read or Write calls.
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//
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// A zero value for t means I/O operations will not time out.
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//
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// Note that if a TCP connection has keep-alive turned on,
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// which is the default unless overridden by Dialer.KeepAlive
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// or ListenConfig.KeepAlive, then a keep-alive failure may
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// also return a timeout error. On Unix systems a keep-alive
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// failure on I/O can be detected using
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// errors.Is(err, syscall.ETIMEDOUT).
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func (c *Conn) SetDeadline(t time.Time) error {
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return c.relay.SetDeadline(t)
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}
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// SetReadDeadline sets the deadline for future Read calls
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// and any currently-blocked Read call.
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// A zero value for t means Read will not time out.
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func (c *Conn) SetReadDeadline(t time.Time) error {
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return c.relay.SetReadDeadline(t)
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}
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// SetWriteDeadline sets the deadline for future Write calls
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// and any currently-blocked Write call.
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// Even if write times out, it may return n > 0, indicating that
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// some of the data was successfully written.
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// A zero value for t means Write will not time out.
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func (c *Conn) SetWriteDeadline(t time.Time) error {
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return c.relay.SetWriteDeadline(t)
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}
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