Files
flvx/go-gost/x/dialer/kcp/metadata.go
T
sagitchu 29407c90b6 perf(kcp): optimize tunnel transport defaults for high throughput
- Set KCP mode to fast3 (NoDelay:1, Interval:10ms) for lower latency
- Double SndWnd/RcvWnd from 1024 to 2048 for higher BDP
- Disable FEC (datashard:0, parityshard:0) to eliminate 30% overhead
- Disable compression for tunnel transport
- Increase relay mux MaxStreamBuffer to 2MB for better UDP throughput
- Add kcp.datashard/kcp.parityshard metadata keys support

Before: 210Mbps TCP / 35Mbps UDP (93% loss)
After:  should approach direct-connection speed (~400Mbps+)
2026-04-21 11:33:41 +08:00

99 lines
2.4 KiB
Go

package kcp
import (
"encoding/json"
"time"
mdata "github.com/go-gost/core/metadata"
mdutil "github.com/go-gost/x/metadata/util"
kcp_util "github.com/go-gost/x/internal/util/kcp"
)
type metadata struct {
handshakeTimeout time.Duration
config *kcp_util.Config
}
func (d *kcpDialer) parseMetadata(md mdata.Metadata) (err error) {
const (
config = "config"
configFile = "c"
handshakeTimeout = "handshakeTimeout"
)
if file := mdutil.GetString(md, "kcp.configFile", "configFile", "c"); file != "" {
d.md.config, err = kcp_util.ParseFromFile(file)
if err != nil {
return
}
}
if m := mdutil.GetStringMap(md, "kcp.config", "config"); len(m) > 0 {
b, err := json.Marshal(m)
if err != nil {
return err
}
cfg := &kcp_util.Config{}
if err := json.Unmarshal(b, cfg); err != nil {
return err
}
d.md.config = cfg
}
if d.md.config == nil {
d.md.config = kcp_util.DefaultConfig.Clone()
} else {
d.md.config = d.md.config.Clone()
}
if md != nil {
if md.IsExists("kcp.tcp") {
d.md.config.TCP = mdutil.GetBool(md, "kcp.tcp")
}
if md.IsExists("kcp.key") {
d.md.config.Key = mdutil.GetString(md, "kcp.key")
}
if md.IsExists("kcp.crypt") {
d.md.config.Crypt = mdutil.GetString(md, "kcp.crypt")
}
if md.IsExists("kcp.mode") {
d.md.config.Mode = mdutil.GetString(md, "kcp.mode")
}
if md.IsExists("kcp.keepalive") {
d.md.config.KeepAlive = mdutil.GetInt(md, "kcp.keepalive")
}
if md.IsExists("kcp.interval") {
d.md.config.Interval = mdutil.GetInt(md, "kcp.interval")
}
if md.IsExists("kcp.mtu") {
d.md.config.MTU = mdutil.GetInt(md, "kcp.mtu")
}
if md.IsExists("kcp.rcvwnd") {
d.md.config.RcvWnd = mdutil.GetInt(md, "kcp.rcvwnd")
}
if md.IsExists("kcp.sndwnd") {
d.md.config.SndWnd = mdutil.GetInt(md, "kcp.sndwnd")
}
if md.IsExists("kcp.smuxver") {
d.md.config.SmuxVer = mdutil.GetInt(md, "kcp.smuxver")
}
if md.IsExists("kcp.smuxbuf") {
d.md.config.SmuxBuf = mdutil.GetInt(md, "kcp.smuxbuf")
}
if md.IsExists("kcp.streambuf") {
d.md.config.StreamBuf = mdutil.GetInt(md, "kcp.streambuf")
}
if md.IsExists("kcp.nocomp") {
d.md.config.NoComp = mdutil.GetBool(md, "kcp.nocomp")
}
if md.IsExists("kcp.datashard") {
d.md.config.DataShard = mdutil.GetInt(md, "kcp.datashard")
}
if md.IsExists("kcp.parityshard") {
d.md.config.ParityShard = mdutil.GetInt(md, "kcp.parityshard")
}
}
d.md.handshakeTimeout = mdutil.GetDuration(md, handshakeTimeout)
return
}