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functions.go
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functions.go
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package middleware
import (
"net"
"strings"
"github.com/gfads/midarch/pkg/gmidarch/development/generic"
"github.com/gfads/midarch/pkg/gmidarch/development/messages/miop"
"github.com/gfads/midarch/pkg/shared"
"github.com/gfads/midarch/pkg/shared/lib"
"github.com/quic-go/quic-go"
)
func VerifyProtocolAdaptation(msgFromServer []byte, protocol generic.Protocol) (err error) {
if changeProtocol, miopPacket := isAdapt(msgFromServer); changeProtocol {
lib.PrintlnDebug("Adapting, miopPacket.Bd.ReqBody.Body:", miopPacket.Bd.ReqBody.Body)
shared.AdaptId = miopPacket.Bd.ReqBody.Body[1].(int)
adaptToProtocol := miopPacket.Bd.ReqBody.Body[0].(string)
confirmProtocolAdaptation(shared.AdaptId, adaptToProtocol, protocol)
prepareToAdaptTo(adaptToProtocol)
}
return nil
}
func VerifyAdaptation(msgFromServer []byte, sizeOfMsgSize []byte, conn net.Conn, send func(sizeOfMsgSize []byte, msgToServer []byte, conn net.Conn) error) (err error) {
if changeProtocol, miopPacket := isAdapt(msgFromServer); changeProtocol {
lib.PrintlnDebug("Adapting, miopPacket.Bd.ReqBody.Body:", miopPacket.Bd.ReqBody.Body)
shared.AdaptId = miopPacket.Bd.ReqBody.Body[1].(int)
protocol := miopPacket.Bd.ReqBody.Body[0].(string)
confirmAdaptation(shared.AdaptId, protocol, sizeOfMsgSize, conn, send)
prepareToAdaptTo(protocol)
}
return nil
}
func VerifyAdaptationQUIC(msgFromServer []byte, sizeOfMsgSize []byte, stream quic.Stream, send func(sizeOfMsgSize []byte, msgToServer []byte, stream quic.Stream) error) (err error) {
if changeProtocol, miopPacket := isAdapt(msgFromServer); changeProtocol {
lib.PrintlnDebug("Adapting, miopPacket.Bd.ReqBody.Body:", miopPacket.Bd.ReqBody.Body)
shared.AdaptId = miopPacket.Bd.ReqBody.Body[1].(int)
protocol := miopPacket.Bd.ReqBody.Body[0].(string)
confirmAdaptationQUIC(shared.AdaptId, protocol, sizeOfMsgSize, stream, send)
prepareToAdaptTo(protocol)
}
return nil
}
func isAdapt(msgFromServer []byte) (bool, miop.MiopPacket) {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHTCP Version Not adapted")
miop := Jsonmarshaller{}.Unmarshall(msgFromServer)
return miop.Bd.ReqHeader.Operation == "ChangeProtocol", miop
}
func confirmProtocolAdaptation(adaptId int, adaptToProtocol string, protocol generic.Protocol) (err error) {
miopPacket := miop.CreateReqPacket("ChangeProtocol", []interface{}{adaptToProtocol, adaptId, "Ok"}, adaptId)
msgPayload := Jsonmarshaller{}.Marshall(miopPacket)
return protocol.Send(msgPayload)
}
func confirmAdaptation(adaptId int, protocol string, sizeOfMsgSize []byte, conn net.Conn, send func(sizeOfMsgSize []byte, msgToServer []byte, conn net.Conn) error) (err error) {
miopPacket := miop.CreateReqPacket("ChangeProtocol", []interface{}{protocol, adaptId, "Ok"}, adaptId)
msgPayload := Jsonmarshaller{}.Marshall(miopPacket)
return send(sizeOfMsgSize, msgPayload, conn)
}
func confirmAdaptationQUIC(adaptId int, protocol string, sizeOfMsgSize []byte, stream quic.Stream, send func(sizeOfMsgSize []byte, msgToServer []byte, stream quic.Stream) error) (err error) {
miopPacket := miop.CreateReqPacket("ChangeProtocol", []interface{}{protocol, adaptId, "Ok"}, adaptId)
msgPayload := Jsonmarshaller{}.Marshall(miopPacket)
return send(sizeOfMsgSize, msgPayload, stream)
}
func prepareToAdaptTo(protocol string) (err error) {
lib.PrintlnInfo("Adapting =>", strings.ToUpper(protocol))
if protocol == "udp" { // TODO dcruzb : change to switch
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhudp")
} else if protocol == "tcp" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhtcp")
} else if protocol == "tls" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhtls")
} else if protocol == "quic" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhquic")
} else if protocol == "rpc" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhrpc")
} else if protocol == "http2" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhhttp2")
} else if protocol == "https" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhhttps")
} else if protocol == "http" {
shared.ListOfComponentsToAdaptTo = append(shared.ListOfComponentsToAdaptTo, "crhhttp")
}
return nil
}