tidwall cfc65a13f6 Refactor repository and build scripts
This commit includes updates that affects the build, testing, and
deployment of Tile38.

- The root level build.sh has been broken up into multiple scripts
  and placed in the "scripts" directory.

- The vendor directory has been updated to follow the Go modules
  rules, thus `make` should work on isolated environments. Also
  some vendored packages may have been updated to a later
  version, if needed.

- The Makefile has been updated to allow for making single
  binaries such as `make tile38-server`. There is some scaffolding
  during the build process, so from now on all binaries should be
  made using make. For example, to run a development version of
  the tile38-cli binary, do this:
     make tile38-cli && ./tile38-cli
  not this:
     go run cmd/tile38-cli/main.go

- Travis.CI docker push script has been updated to address a
  change to Docker's JSON repo meta output, which in turn fixes
  a bug where new Tile38 versions were not being properly pushed
  to Docker
2019-11-18 10:33:15 -07:00

53 lines
1.1 KiB
Go

package packets
import (
"bytes"
"fmt"
"io"
)
//SubackPacket is an internal representation of the fields of the
//Suback MQTT packet
type SubackPacket struct {
FixedHeader
MessageID uint16
ReturnCodes []byte
}
func (sa *SubackPacket) String() string {
str := fmt.Sprintf("%s", sa.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", sa.MessageID)
return str
}
func (sa *SubackPacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeUint16(sa.MessageID))
body.Write(sa.ReturnCodes)
sa.FixedHeader.RemainingLength = body.Len()
packet := sa.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (sa *SubackPacket) Unpack(b io.Reader) error {
var qosBuffer bytes.Buffer
sa.MessageID = decodeUint16(b)
qosBuffer.ReadFrom(b)
sa.ReturnCodes = qosBuffer.Bytes()
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (sa *SubackPacket) Details() Details {
return Details{Qos: 0, MessageID: sa.MessageID}
}