initial commit

handler/ss/udp/metadata.go

@@ -0,0 +1,32 @@
+package ss
+
+import (
+	"math"
+	"time"
+
+	mdata "github.com/go-gost/gost/v3/pkg/metadata"
+)
+
+type metadata struct {
+	key         string
+	readTimeout time.Duration
+	bufferSize  int
+}
+
+func (h *ssuHandler) parseMetadata(md mdata.Metadata) (err error) {
+	const (
+		key         = "key"
+		readTimeout = "readTimeout"
+		bufferSize  = "bufferSize"
+	)
+
+	h.md.key = mdata.GetString(md, key)
+	h.md.readTimeout = mdata.GetDuration(md, readTimeout)
+
+	if bs := mdata.GetInt(md, bufferSize); bs > 0 {
+		h.md.bufferSize = int(math.Min(math.Max(float64(bs), 512), 64*1024))
+	} else {
+		h.md.bufferSize = 1024
+	}
+	return
+}