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crhtls.go
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crhtls.go
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package middleware
import (
"crypto/tls"
"encoding/binary"
"net"
"reflect"
"time"
"github.com/gfads/midarch/pkg/gmidarch/development/messages"
"github.com/gfads/midarch/pkg/shared"
"github.com/gfads/midarch/pkg/shared/lib"
)
// @Type: CRHTLS
// @Behaviour: Behaviour = InvP.e1 -> I_Process -> TerP.e1 -> Behaviour
type CRHTLS struct{}
func (c CRHTLS) getLocalTcpAddr() *net.TCPAddr {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHTLS Version Not adapted")
//fmt.Println("github.com/gfads/midarch/src/shared.LocalAddr:", shared.LocalAddr)
lib.PrintlnDebug("github.com/gfads/midarch/src/shared.LocalAddr:", shared.LocalAddr)
var err error = nil
var localTCPAddr *net.TCPAddr = nil
//shared.LocalAddr = "127.0.0.1:37521"
if shared.LocalAddr != "" {
localTCPAddr, err = net.ResolveTCPAddr("tcp", shared.LocalAddr)
if err != nil {
shared.ErrorHandler(shared.GetFunction(), err.Error())
}
}
return localTCPAddr
}
func (c CRHTLS) I_Process(id string, msg *messages.SAMessage, info *interface{}, reset *bool) {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHTLS Version Not adapted")
infoTemp := *info
crhInfo := infoTemp.(messages.CRHInfo)
// check message
//payload := msg.Payload.([]byte)
payload := msg.Payload.(messages.RequestorInfo).MarshalledMessage
h := msg.Payload.(messages.RequestorInfo).Inv.Endpoint.Host
p := msg.Payload.(messages.RequestorInfo).Inv.Endpoint.Port
host := ""
port := ""
if h == "" || p == "" {
host = crhInfo.EndPoint.Host
port = crhInfo.EndPoint.Port
} else {
host = h
port = p
}
msgToServer := payload
addr := host + ":" + port
var err error
//fmt.Println("Vai conectar", crhInfo.Conns[addr])
lib.PrintlnDebug("Vai conectar", crhInfo.Conns[addr])
if _, ok := crhInfo.Conns[addr]; !ok || reflect.TypeOf(crhInfo.Conns[addr]).Elem().Name() != "Conn" { // no connection open yet
//fmt.Println("Entrou", crhInfo.Conns[addr])
lib.PrintlnDebug("Entrou", crhInfo.Conns[addr])
tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
if err != nil {
shared.ErrorHandler(shared.GetFunction(), err.Error())
}
//log.Println("Resolveu", crhInfo.Conns[addr])
//localTcpAddr := c.getLocalTcpAddr()
for {
crhInfo.Conns[addr], err = tls.Dial("tcp4", tcpAddr.String(), lib.GetClientTLSConfig("h2"))
//log.Println("Discou", crhInfo.Conns[addr])
if err != nil {
lib.PrintlnError("Dial error", crhInfo.Conns[addr], err)
time.Sleep(200 * time.Millisecond)
//shared.ErrorHandler(shared.GetFunction(), err.Error())
} else {
break
}
}
if addr != shared.NAMING_HOST+":"+shared.NAMING_PORT && shared.LocalAddr == "" {
//fmt.Println("crhInfo.Conns[addr].LocalAddr().String()", crhInfo.Conns[addr].LocalAddr())
//log.Println("crhInfo.Conns[addr].LocalAddr().String()", crhInfo.Conns[addr].LocalAddr().String())
shared.LocalAddr = crhInfo.Conns[addr].LocalAddr().String()
}
}
//fmt.Println("Terminou", crhInfo.Conns[addr])
lib.PrintlnDebug("Terminou", crhInfo.Conns[addr])
// send message's size
conn := crhInfo.Conns[addr]
sizeOfMsgSize := make([]byte, shared.SIZE_OF_MESSAGE_SIZE, shared.SIZE_OF_MESSAGE_SIZE)
err = c.send(sizeOfMsgSize, msgToServer, conn)
if err != nil {
lib.PrintlnError("Error trying to send message:", err.Error())
*msg = messages.SAMessage{Payload: nil} // TODO dcruzb: adjust message
crhInfo.Conns[addr].Close()
crhInfo.Conns[addr] = nil
delete(crhInfo.Conns, addr)
return
}
msgFromServer, err := c.read(conn, sizeOfMsgSize)
if err != nil {
lib.PrintlnError("Error trying to read message:", err.Error())
*msg = messages.SAMessage{Payload: nil} // TODO dcruzb: adjust message
crhInfo.Conns[addr].Close()
crhInfo.Conns[addr] = nil
delete(crhInfo.Conns, addr)
return
}
VerifyAdaptation(msgFromServer, sizeOfMsgSize, conn, c.send)
*msg = messages.SAMessage{Payload: msgFromServer}
}
func (c CRHTLS) send(sizeOfMsgSize []byte, msgToServer []byte, conn net.Conn) error {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHTLS Version Not adapted")
binary.LittleEndian.PutUint32(sizeOfMsgSize, uint32(len(msgToServer)))
_, err := conn.Write(sizeOfMsgSize)
if err != nil {
//shared.ErrorHandler(shared.GetFunction(), err.Error())
return err
}
// send message
_, err = conn.Write(msgToServer)
if err != nil {
//shared.ErrorHandler(shared.GetFunction(), err.Error())
return err
}
return nil
}
func (c CRHTLS) read(conn net.Conn, size []byte) ([]byte, error) {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHTLS Version Not adapted")
// receive reply's size
_, err := conn.Read(size)
if err != nil {
lib.PrintlnError(shared.GetFunction(), err)
//shared.ErrorHandler(shared.GetFunction(), err.Error())
return nil, err
}
// receive reply
msgFromServer := make([]byte, binary.LittleEndian.Uint32(size), shared.NUM_MAX_MESSAGE_BYTES)
_, err = conn.Read(msgFromServer)
if err != nil {
lib.PrintlnError(shared.GetFunction(), err)
//shared.ErrorHandler(shared.GetFunction(), err.Error())
return nil, err
}
return msgFromServer, nil
}