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ctrl.go
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ctrl.go
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package ctrl
import (
"encoding/gob"
"fmt"
"io"
"net"
"time"
)
type CtrlFunction func(m Message) string
type CtrlServer struct {
Connection net.Listener
Commands map[string]CtrlFunction
}
type CtrlConfiguration struct {
Port int8
}
type Message struct {
Command string
Signatur string
Text interface{}
Time time.Time
}
func NewConnection(cf *CtrlConfiguration) (*CtrlServer, error) {
ln, err := net.Listen("tcp", fmt.Sprintf(":%s", cf.Port))
if err != nil {
return nil, err
}
ctrl := &CtrlServer{
Connection: ln,
}
go func(c *CtrlServer) {
for {
conn, err := c.Connection.Accept()
if err != nil {
c.error(err)
} else {
go c.handle(conn)
}
}
}(ctrl)
return ctrl, nil
}
func (c *CtrlServer) Close() {
c.Connection.Close()
}
func (c *CtrlServer) handle(conn net.Conn) {
var msg Message
dec := gob.NewDecoder(conn)
err := dec.Decode(&msg)
if err != nil {
c.error(err)
return
}
if _, ok := c.Commands[msg.Command]; ok {
resp := c.Commands[msg.Command](msg)
io.WriteString(conn, resp)
}
}
func (c *CtrlServer) error(e error) {
panic(e.Error())
}