transport

type ConnStats struct {
	Host           string
	CreatedAt      time.Time
	LastUsedAt     time.Time
	UseCount       int64
	Age            time.Duration
	IdleTime       time.Duration
	IsReused       bool
	SessionResumed bool   // True if TLS session was resumed
	TLSVersion     uint16 // TLS version (e.g., 0x0304 for TLS 1.3)
	CipherSuite    uint16 // Negotiated cipher suite
}

type HTTP1ConnStats struct {
	IdleConns      int
	TotalUseCount  int64
	OldestCreated  time.Time
	NewestLastUsed time.Time
}

type HTTP1Transport struct {
	// contains filtered or unexported fields
}

type HTTP2Transport struct {
	// contains filtered or unexported fields
}

type HTTP3Stats struct {
	RequestCount int64
	DialCount    int64 // Number of new connections created
	Reusing      bool  // True if connections are being reused
}

type HTTP3Transport struct {
	// contains filtered or unexported fields
}

type HTTPError struct {
	StatusCode int
	Status     string
	Body       []byte
	Headers    map[string]string
}

type Protocol int

type ProxyConfig struct {
	URL      string // Proxy URL (e.g., "http://proxy:8080" or "http://user:pass@proxy:8080")
	Username string // Proxy username (optional, can also be in URL)
	Password string // Proxy password (optional, can also be in URL)
}

type RedirectInfo struct {
	StatusCode int
	URL        string
	Headers    map[string]string
}

type Request struct {
	Method  string
	URL     string
	Headers map[string]string
	Body    []byte
	Timeout time.Duration
}

type Response struct {
	StatusCode int
	Headers    map[string]string
	Body       []byte
	FinalURL   string
	Timing     *protocol.Timing
	Protocol   string // "h1", "h2", or "h3"
	History    []*RedirectInfo
}

type Transport struct {
	// contains filtered or unexported fields
}

type TransportConfig struct {
	// ConnectTo maps request hosts to connection hosts (domain fronting).
	// Key: request host, Value: connection host for DNS resolution
	ConnectTo map[string]string

	// ECHConfig is a custom ECH configuration (overrides DNS fetch)
	ECHConfig []byte

	// ECHConfigDomain is a domain to fetch ECH config from instead of target
	ECHConfigDomain string
}

type TransportError struct {
	Op        string // Operation that failed (e.g., "dial", "tls_handshake", "request")
	Host      string // Target host
	Port      string // Target port
	Protocol  string // Protocol (h1, h2, h3)
	Cause     error  // Underlying error
	Category  error  // Error category (ErrConnection, ErrTLS, etc.)
	Retryable bool   // Whether the operation can be retried
}