Write to downstream conn in dedicated goroutine
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parent
3f2e08b949
commit
4a816e1593
@ -39,10 +39,11 @@ func (err ircError) Error() string {
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}
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}
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type downstreamConn struct {
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type downstreamConn struct {
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net net.Conn
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net net.Conn
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irc *irc.Conn
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irc *irc.Conn
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srv *Server
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srv *Server
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logger Logger
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logger Logger
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messages chan<- *irc.Message
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registered bool
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registered bool
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closed bool
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closed bool
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@ -52,12 +53,24 @@ type downstreamConn struct {
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}
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}
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func newDownstreamConn(srv *Server, netConn net.Conn) *downstreamConn {
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func newDownstreamConn(srv *Server, netConn net.Conn) *downstreamConn {
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return &downstreamConn{
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msgs := make(chan *irc.Message, 64)
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net: netConn,
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conn := &downstreamConn{
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irc: irc.NewConn(netConn),
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net: netConn,
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srv: srv,
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irc: irc.NewConn(netConn),
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logger: &prefixLogger{srv.Logger, fmt.Sprintf("downstream %q: ", netConn.RemoteAddr())},
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srv: srv,
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logger: &prefixLogger{srv.Logger, fmt.Sprintf("downstream %q: ", netConn.RemoteAddr())},
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messages: msgs,
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}
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}
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go func() {
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for msg := range msgs {
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if err := conn.irc.WriteMessage(msg); err != nil {
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conn.logger.Printf("failed to write message: %v", err)
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}
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}
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}()
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return conn
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}
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}
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func (c *downstreamConn) readMessages() error {
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func (c *downstreamConn) readMessages() error {
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@ -75,9 +88,7 @@ func (c *downstreamConn) readMessages() error {
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err = c.handleMessage(msg)
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err = c.handleMessage(msg)
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if ircErr, ok := err.(ircError); ok {
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if ircErr, ok := err.(ircError); ok {
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ircErr.Message.Prefix = c.srv.prefix()
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ircErr.Message.Prefix = c.srv.prefix()
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if err := c.WriteMessage(ircErr.Message); err != nil {
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c.messages <- ircErr.Message
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return fmt.Errorf("failed to write IRC reply: %v", err)
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}
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} else if err != nil {
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} else if err != nil {
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return fmt.Errorf("failed to handle IRC command %q: %v", msg.Command, err)
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return fmt.Errorf("failed to handle IRC command %q: %v", msg.Command, err)
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}
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}
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@ -91,26 +102,31 @@ func (c *downstreamConn) readMessages() error {
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}
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}
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func (c *downstreamConn) Close() error {
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func (c *downstreamConn) Close() error {
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if c.closed {
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return fmt.Errorf("downstream connection already closed")
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}
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if err := c.net.Close(); err != nil {
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if err := c.net.Close(); err != nil {
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return err
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return err
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}
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}
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close(c.messages)
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c.closed = true
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c.closed = true
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return nil
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return nil
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}
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}
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func (c *downstreamConn) WriteMessage(msg *irc.Message) error {
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func (c *downstreamConn) WriteMessage(msg *irc.Message) {
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msg.Prefix = c.srv.prefix()
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msg.Prefix = c.srv.prefix()
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return c.irc.WriteMessage(msg)
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c.messages <- msg
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}
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}
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func (c *downstreamConn) handleMessage(msg *irc.Message) error {
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func (c *downstreamConn) handleMessage(msg *irc.Message) error {
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switch msg.Command {
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switch msg.Command {
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case "PING":
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case "PING":
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// TODO: handle params
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// TODO: handle params
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return c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: "PONG",
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Command: "PONG",
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Params: []string{c.srv.Hostname},
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Params: []string{c.srv.Hostname},
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})
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})
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return nil
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default:
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default:
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if c.registered {
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if c.registered {
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return c.handleMessageRegistered(msg)
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return c.handleMessageRegistered(msg)
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@ -148,45 +164,30 @@ func (c *downstreamConn) handleMessageUnregistered(msg *irc.Message) error {
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func (c *downstreamConn) register() error {
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func (c *downstreamConn) register() error {
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c.registered = true
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c.registered = true
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err := c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: irc.RPL_WELCOME,
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Command: irc.RPL_WELCOME,
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Params: []string{c.nick, "Welcome to jounce, " + c.nick},
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Params: []string{c.nick, "Welcome to jounce, " + c.nick},
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})
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})
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if err != nil {
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return err
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}
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err = c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: irc.RPL_YOURHOST,
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Command: irc.RPL_YOURHOST,
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Params: []string{c.nick, "Your host is " + c.srv.Hostname},
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Params: []string{c.nick, "Your host is " + c.srv.Hostname},
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})
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})
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if err != nil {
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return err
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}
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err = c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: irc.RPL_CREATED,
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Command: irc.RPL_CREATED,
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Params: []string{c.nick, "This server was created <datetime>"}, // TODO
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Params: []string{c.nick, "This server was created <datetime>"}, // TODO
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})
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})
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if err != nil {
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return err
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}
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err = c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: irc.RPL_MYINFO,
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Command: irc.RPL_MYINFO,
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Params: []string{c.nick, c.srv.Hostname, "unknown", "aiwroO", "OovaimnqpsrtklbeI"},
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Params: []string{c.nick, c.srv.Hostname, "unknown", "aiwroO", "OovaimnqpsrtklbeI"},
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})
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})
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if err != nil {
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return err
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}
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err = c.WriteMessage(&irc.Message{
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c.WriteMessage(&irc.Message{
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Command: irc.ERR_NOMOTD,
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Command: irc.ERR_NOMOTD,
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Params: []string{c.nick, "No MOTD"},
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Params: []string{c.nick, "No MOTD"},
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})
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})
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if err != nil {
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return err
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}
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return nil
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return nil
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}
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}
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