finish Init Connect

bot.go

@@ -1,6 +1,21 @@
 package nano
 
-import "time"
+import (
+	"encoding/base64"
+	"encoding/json"
+	"net"
+	"net/http"
+	"reflect"
+	"sync"
+	"time"
+	"unsafe"
+
+	"github.com/RomiChan/syncx"
+	"github.com/RomiChan/websocket"
+	log "github.com/sirupsen/logrus"
+)
+
+var clients = syncx.Map[string, *Bot]{}
 
 // Bot 一个机器人实例的配置
 type Bot struct {
@@ -11,15 +26,158 @@ type Bot struct {
 	Timeout    time.Duration // Timeout is API 调用超时
 	Handler    *Handler      // Handler 注册对各种事件的处理
 
-	handlers map[string]GeneralHandleType // handlers 方便调用的 handler
+	gateway    string  // gateway 获得的网关
+	shard      [2]byte // shard 分片
+	seq        uint32
+	handlers   map[string]GeneralHandleType // handlers 方便调用的 handler
+	mu         sync.Mutex                   // 写锁
+	conn       *websocket.Conn
+	heartbeat  uint32 // heartbeat 心跳周期, 单位毫秒
+	intents    uint32
+	properties json.RawMessage
+	ready      EventReady
 }
 
 // Init 初始化, 只需执行一次
-func (b *Bot) Init() {
+func (b *Bot) Init(gateway string, shard [2]byte, intents uint32, properties json.RawMessage) *Bot {
-
+	b.gateway = gateway
+	b.shard = shard
+	b.intents = intents
+	b.properties = properties
+	if b.Handler != nil {
+		h := reflect.ValueOf(b.Handler).Elem()
+		t := h.Type()
+		b.handlers = make(map[string]GeneralHandleType, h.NumField()*4)
+		for i := 0; i < h.NumField(); i++ {
+			f := h.Field(i)
+			if f.IsZero() {
+				continue
+			}
+			tp := t.Field(i).Name[2:] // skip On
+			log.Infoln("[bot] 注册处理函数", tp)
+			handler := f.Interface()
+			b.handlers[tp] = *(*GeneralHandleType)(unsafe.Add(unsafe.Pointer(&handler), unsafe.Sizeof(uintptr(0))))
+		}
+	}
+	return b
 }
 
 // Authorization 返回 Authorization Header value
 func (bot *Bot) Authorization() string {
 	return "Bot " + bot.AppID + "." + bot.Token
 }
+
+// receive 收一个 payload
+func (bot *Bot) reveive() (payload WebsocketPayload, err error) {
+	err = bot.conn.ReadJSON(&payload)
+	return
+}
+
+// Connect 连接到 Gateway + 鉴权连接
+//
+// https://bot.q.qq.com/wiki/develop/api/gateway/reference.html#_1-%E8%BF%9E%E6%8E%A5%E5%88%B0-gateway
+func (bot *Bot) Connect() {
+	network, address := resolveURI(bot.gateway)
+	log.Infoln("[bot] 开始尝试连接到网关:", network, ", AppID:", bot.AppID)
+	dialer := websocket.Dialer{
+		NetDial: func(_, addr string) (net.Conn, error) {
+			if network == "unix" {
+				host, _, err := net.SplitHostPort(addr)
+				if err != nil {
+					host = addr
+				}
+				filepath, err := base64.RawURLEncoding.DecodeString(host)
+				if err == nil {
+					addr = BytesToString(filepath)
+				}
+			}
+			return net.Dial(network, addr) // support unix socket transport
+		},
+	}
+	for {
+		conn, resp, err := dialer.Dial(address, http.Header{})
+		if err != nil {
+			log.Warnf("[bot] 连接到网关 %v 时出现错误: %v", bot.gateway, err)
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		bot.conn = conn
+		_ = resp.Body.Close()
+		payload, err := bot.reveive()
+		if err != nil {
+			log.Warnln("[bot] 获取心跳间隔时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		bot.heartbeat, err = payload.GetHeartbeatInterval()
+		if err != nil {
+			log.Warnln("[bot] 解析心跳间隔时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		payload.Op = OpCodeIdentify
+		err = payload.WrapData(&OpCodeIdentifyMessage{
+			Token:      bot.Authorization(),
+			Intents:    bot.intents,
+			Shard:      bot.shard,
+			Properties: bot.properties,
+		})
+		if err != nil {
+			log.Warnln("[bot] 包装 Identify 时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		err = bot.SendPayload(&payload)
+		if err != nil {
+			log.Warnln("[bot] 发送 Identify 时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		payload, err = bot.reveive()
+		if err != nil {
+			log.Warnln("[bot] 获取 EventReady 时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		bot.ready, err = payload.GetEventReady()
+		if err != nil {
+			log.Warnln("[bot] 解析 EventReady 时出现错误:", err)
+			_ = conn.Close()
+			time.Sleep(2 * time.Second) // 等待两秒后重新连接
+			continue
+		}
+		break
+	}
+	clients.Store(bot.ready.User.ID, bot)
+	log.Infoln("[bot] 连接到网关成功, 用户名:", bot.ready.User.Username)
+	go bot.doheartbeat()
+}
+
+// doheartbeat 按指定间隔进行心跳包收发
+func (bot *Bot) doheartbeat() {
+	payload := struct {
+		Op OpCode  `json:"op"`
+		D  *uint32 `json:"d"`
+	}{Op: OpCodeHeartbeat}
+	t := time.NewTicker(time.Duration(bot.heartbeat) * time.Millisecond)
+	defer t.Stop()
+	time.Sleep(time.Minute)
+	for range t.C {
+		if bot.seq == 0 {
+			payload.D = nil
+		} else {
+			payload.D = &bot.seq
+		}
+		bot.mu.Lock()
+		err := bot.conn.WriteJSON(&payload)
+		bot.mu.Unlock()
+		if err != nil {
+			log.Warnln("[bot] 发送心跳时出现错误:", err)
+		}
+	}
+}

define.go

@@ -1,69 +0,0 @@
-package nano
-
-import "encoding/json"
-
-const (
-	// StandardAPI 正式环境接口域名
-	StandardAPI = `https://api.sgroup.qq.com`
-	// SandboxAPI 沙箱环境接口域名
-	SandboxAPI = `https://sandbox.api.sgroup.qq.com`
-)
-
-var (
-	OpenAPI = StandardAPI // OpenAPI 实际使用的 API, 默认 StandardAPI, 可自行赋值配置
-)
-
-// CodeMessageBase 各种消息都有的 code + message 基类
-type CodeMessageBase struct {
-	C int    `json:"code"`
-	M string `json:"message"`
-}
-
-// OpCode https://bot.q.qq.com/wiki/develop/api/gateway/opcode.html
-type OpCode int
-
-const (
-	OpCodeDispatch  OpCode = iota // Receive
-	OpCodeHeartbeat               // Send/Receive
-	OpCodeIdentify                // Send
-	OpCodeEmpty1
-	OpCodeEmpty2
-	OpCodeEmpty3
-	OpCodeResume    // Send
-	OpCodeReconnect // Receive
-	OpCodeEmpty4
-	OpCodeInvalidSession  // Receive
-	OpCodeHello           // Receive
-	OpCodeHeartbeatACK    // Receive/Reply
-	OpCodeHTTPCallbackACK // Reply
-)
-
-// WebsocketPayload payload 指的是在 websocket 连接上传输的数据，网关的上下行消息采用的都是同一个结构
-//
-// https://bot.q.qq.com/wiki/develop/api/gateway/reference.html
-type WebsocketPayload struct {
-	Op OpCode          `json:"op"`
-	D  json.RawMessage `json:"d"`
-	S  int             `json:"s"`
-	T  string          `json:"t"`
-}
-
-// https://bot.q.qq.com/wiki/develop/api/gateway/intents.html
-const (
-	IntentGuilds                   = 1 << 0
-	IntentGuildMembers             = 1 << 1
-	IntentGuildMessages            = 1 << 9
-	IntentGuildMessageReactions    = 1 << 10
-	IntentDirectMessage            = 1 << 12
-	IntentOpenForumsEvent          = 1 << 18
-	IntentAudioOrLiveChannelMember = 1 << 19
-	IntentInteraction              = 1 << 26
-	IntentMessageAudit             = 1 << 27
-	IntentForumsEvent              = 1 << 28
-	IntentAudioAction              = 1 << 29
-	IntentPublicGuildMessages      = 1 << 30
-
-	IntentAll = IntentGuilds | IntentGuildMembers | IntentGuildMessages | IntentGuildMessageReactions |
-		IntentDirectMessage | IntentOpenForumsEvent | IntentAudioOrLiveChannelMember | IntentInteraction |
-		IntentMessageAudit | IntentForumsEvent | IntentAudioAction | IntentPublicGuildMessages
-)

go.mod

@@ -3,8 +3,14 @@ module github.com/fumiama/NanoBot
 go 1.20
 
 require (
+	github.com/RomiChan/syncx v0.0.0-20221202055724-5f842c53020e
+	github.com/RomiChan/websocket v1.4.3-0.20220227141055-9b2c6168c9c5
 	github.com/fumiama/go-base16384 v1.7.0
 	github.com/pkg/errors v0.9.1
+	github.com/sirupsen/logrus v1.9.3
 )
 
-require golang.org/x/text v0.3.7 // indirect
+require (
+	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
+	golang.org/x/text v0.3.7 // indirect
+)

go.sum

@@ -1,14 +1,24 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/RomiChan/syncx v0.0.0-20221202055724-5f842c53020e h1:wR3MXQ3VbUlPKOOUwLOYgh/QaJThBTYtsl673O3lqSA=
+github.com/RomiChan/syncx v0.0.0-20221202055724-5f842c53020e/go.mod h1:vD7Ra3Q9onRtojoY5sMCLQ7JBgjUsrXDnDKyFxqpf9w=
+github.com/RomiChan/websocket v1.4.3-0.20220227141055-9b2c6168c9c5 h1:bBmmB7he0iVN4m5mcehfheeRUEer/Avo4ujnxI3uCqs=
+github.com/RomiChan/websocket v1.4.3-0.20220227141055-9b2c6168c9c5/go.mod h1:0UcFaCkhp6vZw6l5Dpq0Dp673CoF9GdvA8lTfst0GiU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fumiama/go-base16384 v1.7.0 h1:6fep7XPQWxRlh4Hu+KsdH+6+YdUp+w6CwRXtMWSsXCA=
 github.com/fumiama/go-base16384 v1.7.0/go.mod h1:OEn+947GV5gsbTAnyuUW/SrfxJYUdYupSIQXOuGOcXM=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

helper.go

@@ -1,8 +1,11 @@
 package nano
 
 import (
+	"encoding/base64"
+	"net/url"
 	"runtime"
 	"strings"
+	"unsafe"
 )
 
 func getFuncNameWithSkip(n int) string {
@@ -66,3 +69,49 @@ func UnderlineToCamel(s string) string {
 	}
 	return sb.String()
 }
+
+// resolveURI github.com/wdvxdr1123/ZeroBot/driver/uri.go
+func resolveURI(addr string) (network, address string) {
+	network, address = "tcp", addr
+	uri, err := url.Parse(addr)
+	if err == nil && uri.Scheme != "" {
+		scheme, ext, _ := strings.Cut(uri.Scheme, "+")
+		if ext != "" {
+			network = ext
+			uri.Scheme = scheme // remove `+unix`/`+tcp4`
+			if ext == "unix" {
+				uri.Host, uri.Path, _ = strings.Cut(uri.Path, ":")
+				uri.Host = base64.StdEncoding.EncodeToString(StringToBytes(uri.Host)) // special handle for unix
+			}
+			address = uri.String()
+		}
+	}
+	return
+}
+
+// slice is the runtime representation of a slice.
+// It cannot be used safely or portably and its representation may
+// change in a later release.
+//
+// Unlike reflect.SliceHeader, its Data field is sufficient to guarantee the
+// data it references will not be garbage collected.
+type slice struct {
+	data unsafe.Pointer
+	len  int
+	cap  int
+}
+
+// BytesToString 没有内存开销的转换
+func BytesToString(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}
+
+// StringToBytes 没有内存开销的转换
+func StringToBytes(s string) (b []byte) {
+	bh := (*slice)(unsafe.Pointer(&b))
+	sh := (*slice)(unsafe.Pointer(&s))
+	bh.data = sh.data
+	bh.len = sh.len
+	bh.cap = sh.len
+	return b
+}

intent.go

@@ -0,0 +1,21 @@
+package nano
+
+// https://bot.q.qq.com/wiki/develop/api/gateway/intents.html
+const (
+	IntentGuilds                   = 1 << 0
+	IntentGuildMembers             = 1 << 1
+	IntentGuildMessages            = 1 << 9
+	IntentGuildMessageReactions    = 1 << 10
+	IntentDirectMessage            = 1 << 12
+	IntentOpenForumsEvent          = 1 << 18
+	IntentAudioOrLiveChannelMember = 1 << 19
+	IntentInteraction              = 1 << 26
+	IntentMessageAudit             = 1 << 27
+	IntentForumsEvent              = 1 << 28
+	IntentAudioAction              = 1 << 29
+	IntentPublicGuildMessages      = 1 << 30
+
+	IntentAll = IntentGuilds | IntentGuildMembers | IntentGuildMessages | IntentGuildMessageReactions |
+		IntentDirectMessage | IntentOpenForumsEvent | IntentAudioOrLiveChannelMember | IntentInteraction |
+		IntentMessageAudit | IntentForumsEvent | IntentAudioAction | IntentPublicGuildMessages
+)

opcode.go

@@ -0,0 +1,30 @@
+package nano
+
+import "encoding/json"
+
+// OpCode https://bot.q.qq.com/wiki/develop/api/gateway/opcode.html
+type OpCode int
+
+const (
+	OpCodeDispatch  OpCode = iota // Receive
+	OpCodeHeartbeat               // Send/Receive
+	OpCodeIdentify                // Send
+	OpCodeEmpty1
+	OpCodeEmpty2
+	OpCodeEmpty3
+	OpCodeResume    // Send
+	OpCodeReconnect // Receive
+	OpCodeEmpty4
+	OpCodeInvalidSession  // Receive
+	OpCodeHello           // Receive
+	OpCodeHeartbeatACK    // Receive/Reply
+	OpCodeHTTPCallbackACK // Reply
+)
+
+// OpCodeIdentifyMessage https://bot.q.qq.com/wiki/develop/api/gateway/reference.html#_2-%E9%89%B4%E6%9D%83%E8%BF%9E%E6%8E%A5
+type OpCodeIdentifyMessage struct {
+	Token      string          `json:"token"`
+	Intents    uint32          `json:"intents"`
+	Shard      [2]byte         `json:"shard"`
+	Properties json.RawMessage `json:"properties"`
+}

openapi.go

@@ -11,6 +11,23 @@ import (
 	"github.com/pkg/errors"
 )
 
+const (
+	// StandardAPI 正式环境接口域名
+	StandardAPI = `https://api.sgroup.qq.com`
+	// SandboxAPI 沙箱环境接口域名
+	SandboxAPI = `https://sandbox.api.sgroup.qq.com`
+)
+
+var (
+	OpenAPI = StandardAPI // OpenAPI 实际使用的 API, 默认 StandardAPI, 可自行赋值配置
+)
+
+// CodeMessageBase 各种消息都有的 code + message 基类
+type CodeMessageBase struct {
+	C int    `json:"code"`
+	M string `json:"message"`
+}
+
 func checkrespbaseunsafe(ptr any) error {
 	respbase := (*CodeMessageBase)(*(*unsafe.Pointer)(unsafe.Add(unsafe.Pointer(&ptr), unsafe.Sizeof(uintptr(0)))))
 	if respbase.C != 0 {

payload.go

@@ -0,0 +1,64 @@
+package nano
+
+import (
+	"encoding/json"
+	"errors"
+	"strconv"
+)
+
+// WebsocketPayload payload 指的是在 websocket 连接上传输的数据，网关的上下行消息采用的都是同一个结构
+//
+// https://bot.q.qq.com/wiki/develop/api/gateway/reference.html
+type WebsocketPayload struct {
+	Op OpCode          `json:"op"`
+	D  json.RawMessage `json:"d,omitempty"`
+	S  int             `json:"s,omitempty"`
+	T  string          `json:"t,omitempty"`
+}
+
+// GetHeartbeatInterval OpCodeHello 获得心跳周期 单位毫秒
+func (wp *WebsocketPayload) GetHeartbeatInterval() (uint32, error) {
+	if wp.Op != OpCodeHello {
+		return 0, errors.New(getThisFuncName() + " unexpected OpCode " + strconv.Itoa(int(wp.Op)))
+	}
+	data := &struct {
+		H uint32 `json:"heartbeat_interval"`
+	}{}
+	err := json.Unmarshal(wp.D, data)
+	return data.H, err
+}
+
+// SendPayload 发送 ws 包
+func (bot *Bot) SendPayload(wp *WebsocketPayload) error {
+	bot.mu.Lock()
+	defer bot.mu.Unlock()
+	return bot.conn.WriteJSON(wp)
+}
+
+// WrapData 将结构体序列化到 wp.D
+func (wp *WebsocketPayload) WrapData(v any) (err error) {
+	wp.D, err = json.Marshal(v)
+	return
+}
+
+// EventReady https://bot.q.qq.com/wiki/develop/api/gateway/reference.html#_2-%E9%89%B4%E6%9D%83%E8%BF%9E%E6%8E%A5
+type EventReady struct {
+	Version   int     `json:"version"`
+	SessionID string  `json:"session_id"`
+	User      *User   `json:"user"`
+	Shard     [2]byte `json:"shard"`
+}
+
+// GetEventReady OpCodeDispatch READY
+func (wp *WebsocketPayload) GetEventReady() (er EventReady, err error) {
+	if wp.Op != OpCodeDispatch {
+		err = errors.New(getThisFuncName() + " unexpected OpCode " + strconv.Itoa(int(wp.Op)))
+		return
+	}
+	if wp.T != "READY" {
+		err = errors.New(getThisFuncName() + " unexpected event type " + wp.T)
+		return
+	}
+	err = json.Unmarshal(wp.D, &er)
+	return
+}