Andrew Beresford
ac99425002
Add configurable TCP keepalive (keepalive, keepalive.idle, keepalive.interval, keepalive.count) to all TCP-based transport types: tls, mtls, mtcp, ws/wss, mws/mwss, http2, ssh, sshd listeners and tls, mtls, mtcp, ws/wss, mws/mwss, ssh, sshd dialers. For types that already use "keepalive" for an app-level protocol (grpc listener/dialer, ws/mws dialers, ssh/sshd dialers), the TCP keepalive parameters are exposed under the tcp.keepalive.* prefix to avoid ambiguity. Also extract shared helpers into internal/net/keepalive.go: - WrapKeepaliveListener: applies KeepAliveConfig on every accepted TCPConn - ApplyKeepalive: applies KeepAliveConfig to a single TCPConn Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
package tls
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import (
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"context"
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"crypto/tls"
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"net"
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"time"
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"github.com/go-gost/core/dialer"
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"github.com/go-gost/core/logger"
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md "github.com/go-gost/core/metadata"
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xctx "github.com/go-gost/x/ctx"
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xnet "github.com/go-gost/x/internal/net"
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"github.com/go-gost/x/internal/net/proxyproto"
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"github.com/go-gost/x/registry"
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)
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func init() {
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registry.DialerRegistry().Register("tls", NewDialer)
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}
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type tlsDialer struct {
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md metadata
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log logger.Logger
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options dialer.Options
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}
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func NewDialer(opts ...dialer.Option) dialer.Dialer {
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options := dialer.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &tlsDialer{
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log: options.Logger,
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options: options,
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}
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}
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func (d *tlsDialer) Init(md md.Metadata) (err error) {
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return d.parseMetadata(md)
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}
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func (d *tlsDialer) Dial(ctx context.Context, addr string, opts ...dialer.DialOption) (net.Conn, error) {
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var options dialer.DialOptions
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for _, opt := range opts {
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opt(&options)
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}
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conn, err := options.Dialer.Dial(ctx, "tcp", addr)
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if err != nil {
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d.log.Error(err)
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}
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if d.md.keepalive {
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xnet.ApplyKeepalive(conn, net.KeepAliveConfig{
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Enable: true,
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Idle: d.md.keepaliveIdle,
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Interval: d.md.keepaliveInterval,
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Count: d.md.keepaliveCount,
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})
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}
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conn = proxyproto.WrapClientConn(
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d.options.ProxyProtocol,
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xctx.SrcAddrFromContext(ctx),
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xctx.DstAddrFromContext(ctx),
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conn)
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return conn, err
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}
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// Handshake implements dialer.Handshaker
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func (d *tlsDialer) Handshake(ctx context.Context, conn net.Conn, options ...dialer.HandshakeOption) (net.Conn, error) {
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if d.md.handshakeTimeout > 0 {
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conn.SetDeadline(time.Now().Add(d.md.handshakeTimeout))
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defer conn.SetDeadline(time.Time{})
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}
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tlsConn := tls.Client(conn, d.options.TLSConfig)
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if err := tlsConn.HandshakeContext(ctx); err != nil {
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conn.Close()
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return nil, err
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}
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return tlsConn, nil
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}
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