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115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
package core
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import (
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"github.com/gorilla/websocket"
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"io"
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"net"
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"time"
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)
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// wsConn 封装 websocket.Conn 并实现所有 net.Conn 接口
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// 兼容所有使用 net.Conn 的方法
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type wsConn struct {
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conn *websocket.Conn
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typ int // message type
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reader io.Reader
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}
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// newWSConn 新建wsConn
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func newWSConn(conn *websocket.Conn) (*wsConn, error) {
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c := &wsConn{conn: conn}
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t, r, err := conn.NextReader()
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if err != nil {
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return nil, err
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}
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c.typ = t
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c.reader = r
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return c, nil
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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 *wsConn) Read(b []byte) (int, error) {
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n, err := c.reader.Read(b)
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if err != nil && err != io.EOF {
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return n, err
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} else if err == io.EOF {
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_, r, err := c.conn.NextReader()
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if err != nil {
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return 0, err
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}
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c.reader = r
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}
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return n, nil
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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 *wsConn) Write(b []byte) (int, error) {
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err := c.conn.WriteMessage(websocket.BinaryMessage, b)
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if err != nil {
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return 0, err
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}
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return len(b), nil
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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 *wsConn) Close() error {
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return c.conn.Close()
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}
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// LocalAddr returns the local network Addr.
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func (c *wsConn) LocalAddr() net.Addr {
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return c.conn.LocalAddr()
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}
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// RemoteAddr returns the remote network Addr.
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func (c *wsConn) RemoteAddr() net.Addr {
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return c.conn.RemoteAddr()
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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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func (c *wsConn) SetDeadline(t time.Time) error {
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if err := c.conn.SetReadDeadline(t); err != nil {
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return err
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}
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return c.conn.SetWriteDeadline(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 *wsConn) SetReadDeadline(t time.Time) error {
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return c.conn.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 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 *wsConn) SetWriteDeadline(t time.Time) error {
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return c.conn.SetWriteDeadline(t)
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}
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