mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-22 18:17:52 -05:00
64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
package httpupgrade
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import (
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"bufio"
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"context"
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"net/http"
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"strings"
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"github.com/v2fly/v2ray-core/v5/common"
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"github.com/v2fly/v2ray-core/v5/common/net"
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"github.com/v2fly/v2ray-core/v5/common/session"
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"github.com/v2fly/v2ray-core/v5/transport/internet"
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"github.com/v2fly/v2ray-core/v5/transport/internet/transportcommon"
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)
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func dialhttpUpgrade(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (net.Conn, error) {
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transportConfiguration := streamSettings.ProtocolSettings.(*Config)
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conn, err := transportcommon.DialWithSecuritySettings(ctx, dest, streamSettings)
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if err != nil {
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return nil, newError("failed to dial request to ", dest).Base(err)
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}
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req, err := http.NewRequest("GET", transportConfiguration.GetNormalizedPath(), nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Connection", "upgrade")
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req.Header.Set("Upgrade", "websocket")
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req.Host = transportConfiguration.Host
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err = req.Write(conn)
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if err != nil {
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return nil, err
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}
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// TODO The bufio usage here is unreliable
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resp, err := http.ReadResponse(bufio.NewReader(conn), req) // nolint:bodyclose
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if err != nil {
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return nil, err
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}
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if resp.Status == "101 Switching Protocols" &&
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strings.ToLower(resp.Header.Get("Upgrade")) == "websocket" &&
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strings.ToLower(resp.Header.Get("Connection")) == "upgrade" {
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return conn, nil
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}
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return nil, newError("unrecognized reply")
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}
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func dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (internet.Connection, error) {
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newError("creating connection to ", dest).WriteToLog(session.ExportIDToError(ctx))
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conn, err := dialhttpUpgrade(ctx, dest, streamSettings)
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if err != nil {
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return nil, newError("failed to dial request to ", dest).Base(err)
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}
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return internet.Connection(conn), nil
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}
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func init() {
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common.Must(internet.RegisterTransportDialer(protocolName, dial))
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}
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