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server.go
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server.go
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package gosip
import (
"log"
"net"
"strings"
)
// Engine 服务类
type Engine struct {
RouteGroup
IP string
Port int
node map[string]callback
conn *net.UDPConn
}
// NewEngine 创建SIP服务器
func NewEngine(ip string, port int) *Engine {
engine := &Engine{
IP: ip,
Port: port,
node: make(map[string]callback),
}
engine.RouteGroup = RouteGroup{engine: engine}
return engine
}
// Run 运行SIP服务器
func (s *Engine) Run() error {
var err error
laddr := &net.UDPAddr{IP: net.ParseIP(s.IP), Port: s.Port}
s.conn, err = net.ListenUDP("udp", laddr)
if err != nil {
return err
}
for {
buffer := make([]byte, 1024)
n, addr, err := s.conn.ReadFrom(buffer)
if err != nil {
log.Printf("[SIP] 请求数据获取失败: %v\n", err)
continue
}
s.handle(addr, buffer[:n])
}
}
// 根据不同的请求分发处理
func (s *Engine) handle(addr net.Addr, bytes []byte) {
go func() {
data := string(bytes)
methodIndex := strings.Index(data, " ")
method := strings.ToUpper(strings.TrimSpace(data[:methodIndex]))
c, ok := s.node[method]
if !ok {
log.Printf("[SIP] 找不到对应的处理请求方法: %s\n", method)
return
}
c(&Context{
conn: s.conn,
addr: addr,
Request: Request{
Header: ParseHeader(data),
Body: ParseBody(data),
},
})
}()
}
// addMethod 注册路由方法
func (s *Engine) addMethod(method string, call callback) {
s.node[method] = call
}