feat(notify): 重构通信内核并补齐 stream/bulk/record/transfer 能力

- 引入 LogicalConn/TransportConn 分层，ClientConn 保留兼容适配层
  - 新增 Stream、Bulk、RecordStream 三条数据面能力及对应控制路径
  - 完成 transfer/file 传输内核与状态快照、诊断能力
  - 补齐 reconnect、inbound dispatcher、modern psk 等基础模块
  - 增加大规模回归、并发与基准测试覆盖
  - 更新依赖库

session_state.go

@@ -0,0 +1,161 @@
+package notify
+
+import (
+	"context"
+	"sync"
+	"sync/atomic"
+)
+
+func sessionIsAlive(alive *atomic.Value) (ok bool) {
+	if alive == nil {
+		return false
+	}
+	defer func() {
+		if recover() != nil {
+			ok = false
+		}
+	}()
+	value := alive.Load()
+	flag, _ := value.(bool)
+	return flag
+}
+
+func sessionMarkStarted(alive *atomic.Value, locker sync.Locker, status *Status) {
+	if alive != nil {
+		alive.Store(true)
+	}
+	withSessionStatusLock(locker, func() {
+		if status == nil {
+			return
+		}
+		*status = Status{
+			Alive:  true,
+			Reason: "",
+			Err:    nil,
+		}
+	})
+}
+
+func sessionMarkStopped(alive *atomic.Value, locker sync.Locker, status *Status, reason string, err error, stopFn context.CancelFunc, cleanupFns ...func()) {
+	if alive != nil {
+		alive.Store(false)
+	}
+	withSessionStatusLock(locker, func() {
+		if status == nil {
+			return
+		}
+		*status = Status{
+			Alive:  false,
+			Reason: reason,
+			Err:    err,
+		}
+	})
+	for _, cleanupFn := range cleanupFns {
+		if cleanupFn != nil {
+			cleanupFn()
+		}
+	}
+	if stopFn != nil {
+		stopFn()
+	}
+}
+
+func sessionStopChan(stopCtx context.Context) <-chan struct{} {
+	if stopCtx == nil {
+		return nil
+	}
+	return stopCtx.Done()
+}
+
+func sessionStatusValue(locker sync.Locker, status *Status) Status {
+	var snapshot Status
+	withSessionStatusLock(locker, func() {
+		if status == nil {
+			return
+		}
+		snapshot = *status
+	})
+	return snapshot
+}
+
+func withSessionStatusLock(locker sync.Locker, fn func()) {
+	if locker != nil {
+		locker.Lock()
+		defer locker.Unlock()
+	}
+	fn()
+}
+
+func (c *ClientCommon) markSessionStarted() {
+	c.markClientSessionStarted()
+	sessionMarkStarted(&c.alive, &c.mu, &c.status)
+}
+
+func (c *ClientCommon) markSessionStopped(reason string, err error) {
+	c.markClientSessionStopping()
+	sessionMarkStopped(&c.alive, &c.mu, &c.status, reason, err, c.clientStopFuncSnapshot(),
+		c.clearClientSessionRuntimeTransport,
+		c.clearClientSessionRuntimeQueue,
+		c.cleanupClientSessionResources,
+	)
+	c.markClientSessionStopped()
+}
+
+func (s *ServerCommon) markSessionStarted() {
+	s.markServerSessionStarted()
+	sessionMarkStarted(&s.alive, &s.mu, &s.status)
+}
+
+func (s *ServerCommon) markSessionStopped(reason string, err error) {
+	s.markServerSessionStopping()
+	sessionMarkStopped(&s.alive, &s.mu, &s.status, reason, err, s.serverStopFuncSnapshot(),
+		s.clearServerSessionRuntimeTransport,
+		s.clearServerSessionRuntimeQueue,
+		s.cleanupServerSessionResources,
+	)
+	s.markServerSessionStopped()
+}
+
+func (c *ClientConn) markSessionStarted() {
+	c.markClientConnLogicalSessionStarted()
+}
+
+func (c *ClientConn) markSessionStopped(reason string, err error) {
+	c.markClientConnLogicalSessionStopped(reason, err)
+}
+
+func (c *ClientCommon) cleanupClientSessionResources() {
+	if c == nil {
+		return
+	}
+	state := c.getLogicalSessionState()
+	state.pendingWaits.closeAll()
+	state.fileAckWaits.closeAll()
+	state.signalAckWaits.closeAll()
+	state.receivedSignals.closeAll()
+	state.transfers.closeAll(errServiceShutdown)
+	if runtime := c.getStreamRuntime(); runtime != nil {
+		runtime.closeAll(errServiceShutdown)
+	}
+	if runtime := c.getBulkRuntime(); runtime != nil {
+		runtime.closeAll(errServiceShutdown)
+	}
+}
+
+func (s *ServerCommon) cleanupServerSessionResources() {
+	if s == nil {
+		return
+	}
+	state := s.getLogicalSessionState()
+	state.pendingWaits.closeAll()
+	state.fileAckWaits.closeAll()
+	state.signalAckWaits.closeAll()
+	state.receivedSignals.closeAll()
+	state.transfers.closeAll(errServiceShutdown)
+	if runtime := s.getStreamRuntime(); runtime != nil {
+		runtime.closeAll(errServiceShutdown)
+	}
+	if runtime := s.getBulkRuntime(); runtime != nil {
+		runtime.closeAll(errServiceShutdown)
+	}
+}