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125 lines
2.3 KiB
125 lines
2.3 KiB
package tcp
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import (
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"errors"
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"io"
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"net"
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"reflect"
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"time"
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)
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var (
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ErrInvalidConn = errors.New("Invalid Connection.")
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)
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type ConnectionManager interface {
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Recycle(string, net.Conn)
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}
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type RawConnection struct {
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net.TCPConn
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}
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func (this *RawConnection) Reusable() bool {
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return false
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}
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func (this *RawConnection) SetReusable(b bool) {}
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func (this *RawConnection) SysFd() (int, error) {
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return getSysFd(&this.TCPConn)
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}
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type Connection struct {
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dest string
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conn net.Conn
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listener ConnectionManager
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reusable bool
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}
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func NewConnection(dest string, conn net.Conn, manager ConnectionManager) *Connection {
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return &Connection{
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dest: dest,
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conn: conn,
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listener: manager,
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reusable: effectiveConfig.ConnectionReuse,
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}
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}
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func (this *Connection) Read(b []byte) (int, error) {
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if this == nil || this.conn == nil {
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return 0, io.EOF
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}
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return this.conn.Read(b)
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}
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func (this *Connection) Write(b []byte) (int, error) {
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if this == nil || this.conn == nil {
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return 0, io.ErrClosedPipe
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}
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return this.conn.Write(b)
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}
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func (this *Connection) Close() error {
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if this == nil || this.conn == nil {
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return io.ErrClosedPipe
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}
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if this.Reusable() {
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this.listener.Recycle(this.dest, this.conn)
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return nil
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}
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err := this.conn.Close()
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this.conn = nil
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return err
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}
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func (this *Connection) LocalAddr() net.Addr {
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return this.conn.LocalAddr()
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}
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func (this *Connection) RemoteAddr() net.Addr {
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return this.conn.RemoteAddr()
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}
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func (this *Connection) SetDeadline(t time.Time) error {
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return this.conn.SetDeadline(t)
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}
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func (this *Connection) SetReadDeadline(t time.Time) error {
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return this.conn.SetReadDeadline(t)
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}
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func (this *Connection) SetWriteDeadline(t time.Time) error {
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return this.conn.SetWriteDeadline(t)
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}
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func (this *Connection) SetReusable(reusable bool) {
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if !effectiveConfig.ConnectionReuse {
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return
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}
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this.reusable = reusable
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}
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func (this *Connection) Reusable() bool {
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return this.reusable
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}
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func (this *Connection) SysFd() (int, error) {
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return getSysFd(this.conn)
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}
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func getSysFd(conn net.Conn) (int, error) {
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cv := reflect.ValueOf(conn)
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switch ce := cv.Elem(); ce.Kind() {
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case reflect.Struct:
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netfd := ce.FieldByName("conn").FieldByName("fd")
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switch fe := netfd.Elem(); fe.Kind() {
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case reflect.Struct:
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fd := fe.FieldByName("sysfd")
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return int(fd.Int()), nil
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}
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}
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return 0, ErrInvalidConn
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}
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