52 lines
893 B
Go
52 lines
893 B
Go
package wrapper
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import (
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"errors"
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"net"
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"syscall"
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limiter "github.com/go-gost/core/limiter/conn"
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"github.com/go-gost/core/metadata"
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)
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var (
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errUnsupport = errors.New("unsupported operation")
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)
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// serverConn is a server side Conn with metrics supported.
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type serverConn struct {
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net.Conn
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limiter limiter.Limiter
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}
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func WrapConn(limiter limiter.Limiter, c net.Conn) net.Conn {
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if limiter == nil {
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return c
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}
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return &serverConn{
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Conn: c,
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limiter: limiter,
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}
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}
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func (c *serverConn) SyscallConn() (rc syscall.RawConn, err error) {
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if sc, ok := c.Conn.(syscall.Conn); ok {
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rc, err = sc.SyscallConn()
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return
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}
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err = errUnsupport
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return
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}
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func (c *serverConn) Close() error {
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c.limiter.Allow(-1)
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return c.Conn.Close()
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}
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func (c *serverConn) Metadata() metadata.Metadata {
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if md, ok := c.Conn.(metadata.Metadatable); ok {
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return md.Metadata()
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}
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return nil
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}
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