feat: initial goget release — modern IPv6-first download utility

internal/core/config.go

@@ -0,0 +1,47 @@
+//go:build linux || freebsd
+// +build linux freebsd
+
+package core
+
+import (
+	"time"
+)
+
+// TimeoutConfig configures smart timeout
+type TimeoutConfig struct {
+	Min                 time.Duration
+	Max                 time.Duration
+	MinSpeedBytesPerSec int64
+	SafetyFactor        float64
+	DefaultUnknown      time.Duration
+}
+
+// DefaultTimeoutConfig returns default settings
+func DefaultTimeoutConfig() *TimeoutConfig {
+	return &TimeoutConfig{
+		Min:                 30 * time.Second,
+		Max:                 24 * time.Hour,
+		MinSpeedBytesPerSec: 10 * 1024,
+		SafetyFactor:        3.0,
+		DefaultUnknown:      30 * time.Minute,
+	}
+}
+
+// CalculateTimeout calculates the recommended timeout
+func (tc *TimeoutConfig) CalculateTimeout(fileSize int64, userOverride time.Duration) time.Duration {
+	if userOverride > 0 {
+		return userOverride
+	}
+	if fileSize <= 0 {
+		return tc.DefaultUnknown
+	}
+	expectedSeconds := float64(fileSize) / float64(tc.MinSpeedBytesPerSec)
+	calculated := time.Duration(expectedSeconds * tc.SafetyFactor * float64(time.Second))
+	if calculated < tc.Min {
+		return tc.Min
+	}
+	if calculated > tc.Max {
+		return tc.Max
+	}
+	return calculated
+}