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102 lines
2.6 KiB
102 lines
2.6 KiB
// Package session provides functions for sessions of incoming requests.
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package session // import "github.com/xtls/xray-core/common/session"
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import (
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"context"
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"math/rand"
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"github.com/xtls/xray-core/common/errors"
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"github.com/xtls/xray-core/common/net"
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"github.com/xtls/xray-core/common/protocol"
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"github.com/xtls/xray-core/common/signal"
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)
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// ID of a session.
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type ID uint32
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// NewID generates a new ID. The generated ID is high likely to be unique, but not cryptographically secure.
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// The generated ID will never be 0.
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func NewID() ID {
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for {
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id := ID(rand.Uint32())
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if id != 0 {
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return id
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}
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}
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}
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// ExportIDToError transfers session.ID into an error object, for logging purpose.
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// This can be used with error.WriteToLog().
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func ExportIDToError(ctx context.Context) errors.ExportOption {
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id := IDFromContext(ctx)
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return func(h *errors.ExportOptionHolder) {
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h.SessionID = uint32(id)
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}
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}
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// Inbound is the metadata of an inbound connection.
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type Inbound struct {
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// Source address of the inbound connection.
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Source net.Destination
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// Getaway address.
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Gateway net.Destination
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// Tag of the inbound proxy that handles the connection.
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Tag string
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// User is the user that authencates for the inbound. May be nil if the protocol allows anounymous traffic.
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User *protocol.MemoryUser
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// Conn is actually internet.Connection. May be nil.
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Conn net.Conn
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// Timer of the inbound buf copier. May be nil.
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Timer *signal.ActivityTimer
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}
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// Outbound is the metadata of an outbound connection.
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type Outbound struct {
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// Target address of the outbound connection.
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Target net.Destination
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// Gateway address
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Gateway net.Address
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}
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// SniffingRequest controls the behavior of content sniffing.
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type SniffingRequest struct {
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ExcludeForDomain []string
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OverrideDestinationForProtocol []string
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Enabled bool
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MetadataOnly bool
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}
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// Content is the metadata of the connection content.
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type Content struct {
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// Protocol of current content.
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Protocol string
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SniffingRequest SniffingRequest
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Attributes map[string]string
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SkipRoutePick bool
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}
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// Sockopt is the settings for socket connection.
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type Sockopt struct {
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// Mark of the socket connection.
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Mark int32
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}
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// SetAttribute attachs additional string attributes to content.
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func (c *Content) SetAttribute(name string, value string) {
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if c.Attributes == nil {
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c.Attributes = make(map[string]string)
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}
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c.Attributes[name] = value
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}
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// Attribute retrieves additional string attributes from content.
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func (c *Content) Attribute(name string) string {
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if c.Attributes == nil {
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return ""
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}
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return c.Attributes[name]
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}
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