~samwhited/xmpp

ref: 98f0e1cf416d7d6ae371688e229f45fc33e12519 xmpp/conn.go -rw-r--r-- 2.4 KiB
98f0e1cfSam Whited all: bump dep on mellium.im/xmlstream to v0.13.3 1 year, 10 months ago
                                                                                
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// Copyright 2018 The Mellium Contributors.
// Use of this source code is governed by the BSD 2-clause
// license that can be found in the LICENSE file.

package xmpp

import (
	"io"
	"net"
	"time"
)

// conn is a net.Conn created for the purpose of establishing an XMPP session.
type conn struct {
	c  net.Conn
	rw io.ReadWriter
}

// newConn wraps an io.ReadWriter in a Conn.
// If rw is already a net.Conn, it is returned without modification.
// If rw is not a conn but prev is, the various Conn methods that are not part
// of io.ReadWriter proxy through to prev.
func newConn(rw io.ReadWriter, prev net.Conn) net.Conn {
	if c, ok := rw.(net.Conn); ok {
		return c
	}

	nc := &conn{rw: rw, c: prev}
	return nc
}

// Close closes the connection.
func (c *conn) Close() error {
	if c.c != nil {
		return c.c.Close()
	}
	if closer, ok := c.rw.(io.Closer); ok {
		return closer.Close()
	}
	return nil
}

// LocalAddr returns the local network address.
func (c *conn) LocalAddr() net.Addr {
	return c.c.LocalAddr()
}

// Read can be made to time out and return a net.Error with Timeout() == true
// after a fixed time limit; see SetDeadline and SetReadDeadline.
func (c *conn) Read(b []byte) (n int, err error) {
	return c.rw.Read(b)
}

// RemoteAddr returns the remote network address.
func (c *conn) RemoteAddr() net.Addr {
	if c.c == nil {
		return nil
	}
	return c.c.RemoteAddr()
}

// SetDeadline sets the read and write deadlines associated with the connection.
// A zero value for t means Read and Write will not time out.
// After a Write has timed out, the TLS state is corrupt and all future writes
// will return the same error.
func (c *conn) SetDeadline(t time.Time) error {
	if c.c == nil {
		return nil
	}
	return c.c.SetDeadline(t)
}

// SetReadDeadline sets the read deadline on the underlying connection.
// A zero value for t means Read will not time out.
func (c *conn) SetReadDeadline(t time.Time) error {
	if c.c == nil {
		return nil
	}
	return c.c.SetReadDeadline(t)
}

// SetWriteDeadline sets the write deadline on the underlying connection.
// A zero value for t means Write will not time out.
// After a Write has timed out, the TLS state is corrupt and all future writes
// will return the same error.
func (c *conn) SetWriteDeadline(t time.Time) error {
	if c.c == nil {
		return nil
	}
	return c.c.SetWriteDeadline(t)
}

// Write writes data to the connection.
func (c *conn) Write(b []byte) (int, error) {
	return c.rw.Write(b)
}