refactor(netx): extract tlsdialer from dialer

internal/engine/netx/tlsdialer/eof_test.go

@@ -0,0 +1,80 @@
+package tlsdialer
+
+import (
+	"context"
+	"crypto/tls"
+	"io"
+	"net"
+	"time"
+)
+
+type EOFDialer struct{}
+
+func (EOFDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	time.Sleep(10 * time.Microsecond)
+	return nil, io.EOF
+}
+
+type EOFConnDialer struct{}
+
+func (EOFConnDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return EOFConn{}, nil
+}
+
+type EOFConn struct {
+	net.Conn
+}
+
+func (EOFConn) Read(p []byte) (int, error) {
+	time.Sleep(10 * time.Microsecond)
+	return 0, io.EOF
+}
+
+func (EOFConn) Write(p []byte) (int, error) {
+	time.Sleep(10 * time.Microsecond)
+	return 0, io.EOF
+}
+
+func (EOFConn) Close() error {
+	time.Sleep(10 * time.Microsecond)
+	return io.EOF
+}
+
+func (EOFConn) LocalAddr() net.Addr {
+	return EOFAddr{}
+}
+
+func (EOFConn) RemoteAddr() net.Addr {
+	return EOFAddr{}
+}
+
+func (EOFConn) SetDeadline(t time.Time) error {
+	return nil
+}
+
+func (EOFConn) SetReadDeadline(t time.Time) error {
+	return nil
+}
+
+func (EOFConn) SetWriteDeadline(t time.Time) error {
+	return nil
+}
+
+type EOFAddr struct{}
+
+func (EOFAddr) Network() string {
+	return "tcp"
+}
+
+func (EOFAddr) String() string {
+	return "127.0.0.1:1234"
+}
+
+type EOFTLSHandshaker struct{}
+
+func (EOFTLSHandshaker) Handshake(
+	ctx context.Context, conn net.Conn, config *tls.Config,
+) (net.Conn, tls.ConnectionState, error) {
+	time.Sleep(10 * time.Microsecond)
+	return nil, tls.ConnectionState{}, io.EOF
+}