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wss_facade.go
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wss_facade.go
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package wss
import (
"fmt"
"github.com/civet148/gotools/log"
"github.com/civet148/gotools/parser"
"strings"
)
const (
URL_SCHEME_TCP = "tcp"
URL_SCHEME_TCP4 = "tcp4"
URL_SCHEME_TCP6 = "tcp6"
URL_SCHEME_UDP = "udp"
URL_SCHEME_UDP4 = "udp4"
URL_SCHEME_UDP6 = "udp6"
URL_SCHEME_WS = "ws"
URL_SCHEME_WSS = "wss"
URL_SCHEME_UNIX = "unix"
)
const (
PACK_FRAGMENT_MAX = 1500
)
const (
NETWORK_TCP = "tcp"
NETWORK_TCPv4 = "tcp4"
NETWORK_TCPv6 = "tcp6"
NETWORK_UDP = "udp"
NETWORK_UDPv4 = "udp4"
NETWORK_UDPv6 = "udp6"
NETWORK_UNIX = "unix"
)
const (
WSS_TLS_CERT = "cert"
WSS_TLS_KEY = "key"
)
type SocketHandler interface {
OnAccept(c *SocketClient)
OnReceive(c *SocketClient, data []byte, length int, from string)
OnClose(c *SocketClient)
}
type Socket interface {
Listen() (err error) // bind and listen on address and port
Accept() Socket // accept connection...
Connect() (err error) // for tcp/web socket
Send(data []byte, to ...string) (n int, err error) // send to...
Recv(length int) (data []byte, from string, err error) // receive from... if length > 0, will receive the bytes specified.
Close() (err error) // close socket
GetLocalAddr() string // get socket local address
GetRemoteAddr() string // get socket remote address
GetSocketType() SocketType //get socket type
}
type SocketType int
const (
SocketType_TCP SocketType = 1
SocketType_WEB SocketType = 2
SocketType_UDP SocketType = 3
SocketType_UNIX SocketType = 4
)
func (s SocketType) GoString() string {
return s.String()
}
func (s SocketType) String() string {
switch s {
case SocketType_TCP:
return "SocketType_TCP"
case SocketType_WEB:
return "SocketType_WEB"
case SocketType_UDP:
return "SocketType_UDP"
case SocketType_UNIX:
return "SocketType_UNIX"
}
return "SocketType_Unknown"
}
type SocketInstance func(ui *parser.UrlInfo) Socket
var instances = make(map[SocketType]SocketInstance)
func Register(sockType SocketType, inst SocketInstance) (err error) {
if _, ok := instances[sockType]; !ok {
instances[sockType] = inst
return
}
err = fmt.Errorf("socket type [%v] instance already exists", sockType)
log.Errorf("%v", err.Error())
return
}
func newSocket(sockType SocketType, ui *parser.UrlInfo) (s Socket) {
if inst, ok := instances[sockType]; !ok {
log.Errorf("socket type [%v] instance not register", sockType)
return nil
} else {
s = inst(ui)
}
return
}
func SetLogDebug(enable bool) {
if enable {
log.SetLevel("debug")
} else {
log.SetLevel("warn")
}
}
func SetLogFile(strPath string) {
if strPath != "" {
log.Open(strPath)
}
}
func createSocket(url string) (s Socket) {
url = strings.ToLower(url)
ui := parser.ParseUrl(url)
switch ui.Scheme {
case URL_SCHEME_TCP, URL_SCHEME_TCP4, URL_SCHEME_TCP6:
s = newSocket(SocketType_TCP, ui)
case URL_SCHEME_WS, URL_SCHEME_WSS:
s = newSocket(SocketType_WEB, ui)
case URL_SCHEME_UDP, URL_SCHEME_UDP4, URL_SCHEME_UDP6:
s = newSocket(SocketType_UDP, ui)
case URL_SCHEME_UNIX:
s = newSocket(SocketType_UNIX, ui)
default:
{
url = URL_SCHEME_TCP + parser.URL_SCHEME_SEP + url
ui = parser.ParseUrl(url)
s = newSocket(SocketType_TCP, ui) //default 'tcp'
}
}
return
}