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client.go
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client.go
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package tcp
import (
"encoding/gob"
"log"
"net"
)
type Client struct {
ServerAddr string
OnStateChange OnClientStateChange
OnMsgRecv OnClientMsgRecv
Conn net.Conn
encoder *gob.Encoder
decoder *gob.Decoder
State ClientState
}
func NewClient(serveraddr string) *Client {
return &Client{ServerAddr: serveraddr, State: ClientDisconnected}
}
func (c *Client) SetOnStateChange(handler OnClientStateChange) *Client {
c.OnStateChange = handler
return c
}
func (c *Client) SetOnMsgRecv(handler OnClientMsgRecv) *Client {
c.OnMsgRecv = handler
return c
}
func (c *Client) Start() error {
var err error
c.Conn, err = net.Dial("tcp", c.ServerAddr)
if err != nil {
return err
}
c.State = ClientConnected
c.encoder = gob.NewEncoder(c.Conn)
c.decoder = gob.NewDecoder(c.Conn)
go c.loop()
return nil
}
func (c *Client) loop() {
msg := make([]byte, 0, 102400)
for {
err := c.decoder.Decode(&msg)
if err != nil {
log.Printf("tcp client recv error: %v", err)
c.State = ClientDisconnected
if c.OnStateChange != nil {
c.OnStateChange(c, ClientDisconnected)
}
c.Conn.Close()
return
}
if c.OnMsgRecv != nil {
c.OnMsgRecv(c, msg, err)
}
}
}
func (c *Client) Stop() {
c.Conn.Close()
c.State = ClientDisconnected
}
func (c *Client) Send(msg []byte) error {
return c.encoder.Encode(msg)
}