mirror of
https://github.com/XTLS/Xray-core.git
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496b2c02c5
* Fix Dial function crash instance when there is no instance context in the ctx * check ctx to fix. (#841) * Feat: core.ToContext(ctx, v) for ctx initialization (#852) * remove exported API: toContext * Remove unnecessary API * rework document for API * fix: make sure the ctx is propagated to connections by detached connection Co-authored-by: Shelikhoo <xiaokangwang@outlook.com> Co-authored-by: rurirei <72071920+rurirei@users.noreply.github.com>
84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
package core
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import (
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"bytes"
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"context"
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"github.com/xtls/xray-core/common"
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"github.com/xtls/xray-core/common/net"
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"github.com/xtls/xray-core/common/net/cnc"
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"github.com/xtls/xray-core/features/routing"
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"github.com/xtls/xray-core/transport/internet/udp"
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)
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// CreateObject creates a new object based on the given Xray instance and config. The Xray instance may be nil.
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func CreateObject(v *Instance, config interface{}) (interface{}, error) {
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ctx := v.ctx
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if v != nil {
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ctx = toContext(v.ctx, v)
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}
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return common.CreateObject(ctx, config)
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}
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// StartInstance starts a new Xray instance with given serialized config.
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// By default Xray only support config in protobuf format, i.e., configFormat = "protobuf". Caller need to load other packages to add JSON support.
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//
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// xray:api:stable
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func StartInstance(configFormat string, configBytes []byte) (*Instance, error) {
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config, err := LoadConfig(configFormat, bytes.NewReader(configBytes))
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if err != nil {
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return nil, err
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}
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instance, err := New(config)
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if err != nil {
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return nil, err
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}
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if err := instance.Start(); err != nil {
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return nil, err
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}
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return instance, nil
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}
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// Dial provides an easy way for upstream caller to create net.Conn through Xray.
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// It dispatches the request to the given destination by the given Xray instance.
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// Since it is under a proxy context, the LocalAddr() and RemoteAddr() in returned net.Conn
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// will not show real addresses being used for communication.
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//
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// xray:api:stable
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func Dial(ctx context.Context, v *Instance, dest net.Destination) (net.Conn, error) {
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ctx = toContext(ctx, v)
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dispatcher := v.GetFeature(routing.DispatcherType())
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if dispatcher == nil {
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return nil, newError("routing.Dispatcher is not registered in Xray core")
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}
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r, err := dispatcher.(routing.Dispatcher).Dispatch(ctx, dest)
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if err != nil {
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return nil, err
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}
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var readerOpt cnc.ConnectionOption
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if dest.Network == net.Network_TCP {
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readerOpt = cnc.ConnectionOutputMulti(r.Reader)
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} else {
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readerOpt = cnc.ConnectionOutputMultiUDP(r.Reader)
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}
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return cnc.NewConnection(cnc.ConnectionInputMulti(r.Writer), readerOpt), nil
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}
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// DialUDP provides a way to exchange UDP packets through Xray instance to remote servers.
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// Since it is under a proxy context, the LocalAddr() in returned PacketConn will not show the real address.
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//
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// TODO: SetDeadline() / SetReadDeadline() / SetWriteDeadline() are not implemented.
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//
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// xray:api:beta
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func DialUDP(ctx context.Context, v *Instance) (net.PacketConn, error) {
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ctx = toContext(ctx, v)
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dispatcher := v.GetFeature(routing.DispatcherType())
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if dispatcher == nil {
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return nil, newError("routing.Dispatcher is not registered in Xray core")
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}
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return udp.DialDispatcher(ctx, dispatcher.(routing.Dispatcher))
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}
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