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apns_conn.go
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apns_conn.go
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package apns
import (
"bytes"
"context"
"crypto/tls"
"encoding/json"
"errors"
"fmt"
"io"
"net"
"net/http"
"time"
"github.com/blackbeans/logx"
"golang.org/x/net/http2"
)
const (
//开发环境
URL_DEV = "api.development.push.apple.com:443"
//正式环境
URL_PRODUCTION = "api.push.apple.com:443"
)
var log = logx.GetLogger("apns")
type Notification struct {
Topic string
ApnsID string
CollapseID string
Priority int
Expiration time.Time
DeviceToken string
Payload PayLoad
ExtParams map[string]string //自定义参数
Response Response
}
// alert
type Alert struct {
Title string `json:"title,omitempty"`
Body string `json:"body,omitempty"`
TitleLocKey *string `json:"title-loc-key,omitempty"`
TitleLocArgs []string `json:"title-loc-args,omitempty"`
ActionLocKey *string `json:"action-loc-key,omitempty"`
LocKey *string `json:"loc-key,omitempty"`
LocArgs *[]interface{} `json:"loc-args,omitempty"`
LaunchImage *string `json:"launch-image,omitempty"`
}
type Aps struct {
Alert *Alert `json:"alert,omitempty"`
Badge int `json:"badge,omitempty"` //显示气泡数
Sound string `json:"sound"` //控制push弹出的声音
ContentAvailable int `json:"content-available,omitempty"`
Category string `json:"category,omitempty"`
ThreadID string `json:"thread-id,omitempty"`
}
// aps额外的参数
type PayLoad struct {
OpenExpr *string `json:"open_expr,omitempty"`
Aps Aps `json:"aps"`
}
// 响应结果
type Response struct {
Status int `json:"status"`
Reason string `json:"reason"`
}
// apns的链接
type ApnsConn struct {
ctx context.Context
cancel context.CancelFunc
cert *tls.Config //ssl证书
hostport string
worktime time.Time
keepalivePeriod time.Duration
c *http2.ClientConn
conn net.Conn
alive bool //是否存活
}
// NewApnsConn ...
func NewApnsConn(
ctx context.Context,
certificates tls.Certificate,
hostport string,
keepalivePeriod time.Duration) (*ApnsConn, error) {
tlsConfig := &tls.Config{}
tlsConfig.Certificates = []tls.Certificate{certificates}
tlsConfig.InsecureSkipVerify = true
if len(certificates.Certificate) > 0 {
tlsConfig.BuildNameToCertificate()
}
conn := &ApnsConn{
ctx: ctx,
cert: tlsConfig,
hostport: hostport,
keepalivePeriod: keepalivePeriod}
err := conn.Open()
go conn.keepalive()
return conn, err
}
// keepalive
func (self *ApnsConn) keepalive() {
ticker := time.NewTicker(5 * time.Second)
for self.alive {
select {
case <-ticker.C:
//send ping if connection is still alive and connection is idle for half of keepalivePeriod
if nil != self.c && self.alive &&
time.Since(self.worktime) > self.keepalivePeriod {
err := self.c.Ping(self.ctx)
if nil != err {
log.Warnf("CheckAlive|%s|Ping|FAIL|...", self.hostport)
self.close0()
//重新连接
self.Open()
} else {
log.Debugf("CheckAlive|%s|Ping|SUCC|...", self.hostport)
break
}
}
case <-self.ctx.Done():
ticker.Stop()
if nil != self.c {
self.Destroy()
}
}
}
}
// 打开apns的链接
func (self *ApnsConn) Open() error {
dialer := &net.Dialer{
Timeout: self.keepalivePeriod * 2,
KeepAlive: self.keepalivePeriod}
DialTLS := func(network, addr string, cfg *tls.Config) (net.Conn, error) {
conn, err := tls.DialWithDialer(dialer,
network, self.hostport, self.cert)
if nil != err {
return nil, err
}
return conn, err
}
conn, err := DialTLS("tcp", self.hostport, self.cert)
if nil != err {
return err
}
transport := &http2.Transport{
TLSClientConfig: self.cert}
h2c, err := transport.NewClientConn(conn.(*tls.Conn))
if nil != err {
return err
}
//open http2
self.c = h2c
self.conn = conn
self.alive = true
log.Info("Reconnect Apns|SUCC|...")
return nil
}
// 发送消息
func (self *ApnsConn) SendMessage(notification *Notification) error {
data, err := json.Marshal(notification.Payload)
if nil != err {
return errors.New("Invalid Payload !")
}
if nil != notification.ExtParams && len(notification.ExtParams) > 0 {
var mapVal map[string]interface{}
err := json.Unmarshal(data, &mapVal)
if nil == err {
for k, v := range notification.ExtParams {
mapVal[k] = v
}
data, err = json.Marshal(mapVal)
if nil != err {
return errors.New("Invalid Payload !")
}
}
}
domain, _, _ := net.SplitHostPort(self.hostport)
url := fmt.Sprintf("https://%s/3/device/%v", domain, notification.DeviceToken)
req, err := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(data))
if nil != err {
log.Infof("CreateReq|FAIL|%v|%s|%s", err, url, string(data))
return err
}
setHeaders(req, notification)
response, err := self.c.RoundTrip(req)
if nil != err {
log.Infof("FireReq|FAIL|%v|%s|%s", err, url, string(data))
return err
}
defer response.Body.Close()
//reset worktime time
self.worktime = time.Now()
decoder := json.NewDecoder(response.Body)
resp := &Response{}
resp.Status = response.StatusCode
if err = decoder.Decode(&resp); nil != err && err != io.EOF {
log.Infof("UnmarshaldResponse|FAIL|%v|%s|%s", err, url, string(data))
return err
}
notification.Response = *resp
return nil
}
// config header
func setHeaders(r *http.Request, n *Notification) {
r.Header.Set("Content-Type", "application/json; charset=utf-8")
if n.Topic != "" {
r.Header.Set("apns-topic", n.Topic)
}
if n.ApnsID != "" {
r.Header.Set("apns-id", n.ApnsID)
}
if n.CollapseID != "" {
r.Header.Set("apns-collapse-id", n.CollapseID)
}
if n.Priority > 0 {
r.Header.Set("apns-priority", fmt.Sprintf("%v", n.Priority))
}
if !n.Expiration.IsZero() {
r.Header.Set("apns-expiration", fmt.Sprintf("%v", n.Expiration.Unix()))
}
}
func (self *ApnsConn) close0() {
if self.alive {
self.alive = false
self.conn.Close()
}
}
func (self *ApnsConn) Destroy() {
self.close0()
}