feat(cli): Add bandwidth parameter overflow checking and command line parameter passing

internal/client/cli/http.go

@@ -2,6 +2,7 @@ package cli
 
 import (
 	"fmt"
+	"math"
 	"strconv"
 	"strings"
 
@@ -154,5 +155,10 @@ func parseBandwidth(s string) (int64, error) {
 		return 0, fmt.Errorf("invalid bandwidth value: %q (use format like 1M, 500K, 1G)", s)
 	}
 
+	const maxBandwidth = math.MaxInt64
+	if multiplier > 0 && val > maxBandwidth/multiplier {
+		return 0, fmt.Errorf("bandwidth value too large: %q", s)
+	}
+
 	return val * multiplier, nil
 }

internal/client/cli/http_test.go

@@ -39,6 +39,8 @@ func TestParseBandwidth(t *testing.T) {
 		{"K", 0, true},
 		{"1T", 0, true},
 		{"1KM", 0, true},
+		{"9223372036854775807K", 0, true},  // overflow: MaxInt64 * 1024
+		{"9999999999999999999G", 0, true},  // overflow: huge * 1G
 	}
 
 	for _, tt := range tests {

internal/client/cli/tunnel_helpers.go

@@ -30,6 +30,9 @@ func buildDaemonArgs(tunnelType string, args []string, subdomain string, localAd
 	if verbose {
 		daemonArgs = append(daemonArgs, "--verbose")
 	}
+	if bandwidth != "" {
+		daemonArgs = append(daemonArgs, "--bandwidth", bandwidth)
+	}
 
 	return daemonArgs
 }