diff --git a/cmd/main.go b/cmd/main.go
index 9735c98..9e76eee 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -51,8 +51,8 @@ func main() {
 	eraseFileRule := readers.CreateEraseFileRule("^ERASEFILE ([A-Za-z0-9.]{50,200})\r\n$")
 	protocolRepository.AddReader(&eraseFileRule)
 
-	// Creation of the SendFileRule
-	sendFileRule := readers.CreateSendFileRule("^SENDFILE ([A-Za-z0-9.]{50,200} [0-9]{1,10} [A-Za-z0-9.]{50,200})\r\n$")
+	// Creation of the SendFileRule // TODO reset to 50,200
+	sendFileRule := readers.CreateSendFileRule("^SENDFILE ([A-Za-z0-9.]{1,200} [0-9]{1,10} [A-Za-z0-9.]{50,200})\r\n$")
 	protocolRepository.AddReader(&sendFileRule)
 
 	// Create a Multicast Client & run it
diff --git a/pkg/network/ServerUnicast.go b/pkg/network/ServerUnicast.go
index f76b81d..bd9bccd 100644
--- a/pkg/network/ServerUnicast.go
+++ b/pkg/network/ServerUnicast.go
@@ -23,18 +23,21 @@ func (server ServerUnicast) Run() {
 
 	// Attente connexion du FileFrontEnd
 	con, err := listen.Accept()
+	print("connection ok")
 
 	if err != nil {
 		fmt.Printf("Error while accepting client : %s\n", err)
 		return
 	} else {
 		for { // TODO : Extraire cette partie de code
-			line, err := bufio.NewReader(con).ReadString('\n')
+			reader := bufio.NewReader(con)
+			line, err := reader.ReadString('\n')
+			println("OK ") // TODO REMOVE
+			println(line)
 			if err != nil {
 				return
 			}
-
-			result := server.ReqManager.Execute(line)
+			result := server.ReqManager.Execute(line, reader)
 			_, _ = con.Write(append([]byte(result), '\n')) // TODO : ATTENTION laisser les \n
 		}
 	}
diff --git a/pkg/protocol/IProtocolReader.go b/pkg/protocol/IProtocolReader.go
index 26b0ea4..b34727b 100644
--- a/pkg/protocol/IProtocolReader.go
+++ b/pkg/protocol/IProtocolReader.go
@@ -1,12 +1,14 @@
 package protocol
 
+import "bufio"
+
 // IProtocolReader Représentation abstraite d'un protocol
 type IProtocolReader interface {
 	// GetCmd Permet de récupérer le nom de la commande
 	GetCmd() string
 
 	// Execute Permet d'exécuter l'action implémentée par une règle. Retourne le message (rule) de retour et bool pour savoir si tout s'est bien passé ou non
-	Execute(data string) (string, bool)
+	Execute(data string) (string, bool, func(r *bufio.Reader) (string, bool))
 
 	// Match Permet de vérifier la validité d'une donnée censée suivre les règles d'un protocol
 	Match(data string) bool
diff --git a/pkg/protocol/managers/RequestManager.go b/pkg/protocol/managers/RequestManager.go
index 6ee6044..946d728 100644
--- a/pkg/protocol/managers/RequestManager.go
+++ b/pkg/protocol/managers/RequestManager.go
@@ -1,17 +1,26 @@
 package managers
 
-import "StoreBackEnd/pkg/protocol/repository"
+import (
+	"StoreBackEnd/pkg/protocol/repository"
+	"bufio"
+)
 
 type RequestManager struct {
 	Repository *repository.ProtocolRepository
 }
 
-func (receiver RequestManager) Execute(request string) string {
+func (receiver RequestManager) Execute(request string, reader *bufio.Reader) string {
 	// On lis ce que l'on reçoit
-	result, executed := receiver.Repository.ExecuteReader(request)
+	result, executed, readCb := receiver.Repository.ExecuteReader(request)
 
 	// On renvoie la réponse (Comment pour fichier ?)
 	if executed {
+		if readCb != nil {
+			cbResult, _ := readCb(reader)
+			if cbResult != "" {
+				result = cbResult
+			}
+		}
 		return result
 	} else {
 		// TODO : Renvoyer qu'une erreur est survenue
diff --git a/pkg/protocol/repository/ProtocolRepository.go b/pkg/protocol/repository/ProtocolRepository.go
index e47615a..27d5669 100644
--- a/pkg/protocol/repository/ProtocolRepository.go
+++ b/pkg/protocol/repository/ProtocolRepository.go
@@ -1,6 +1,9 @@
 package repository
 
-import "StoreBackEnd/pkg/protocol"
+import (
+	"StoreBackEnd/pkg/protocol"
+	"bufio"
+)
 
 func CreateProtocolRepository() *ProtocolRepository {
 	return &ProtocolRepository{
@@ -33,14 +36,14 @@ func (repo ProtocolRepository) AddWriter(writer *protocol.IProtocolWriter) {
 /*
 	ExecuteReader Permet d'exécuter un Reader et de récupérer la commande à renvoyer. La deuxième valeur de retour permet de savoir si une commande a put être exécuté
 */
-func (repo ProtocolRepository) ExecuteReader(data string) (string, bool) {
+func (repo ProtocolRepository) ExecuteReader(data string) (string, bool, func(r *bufio.Reader) (string, bool)) {
 	for _, reader := range repo.protocolReaders {
 		if (*reader).Match(data) { // Exécuter si match
 			// Récupérer résultat à renvoyer (Donc donner ProtocolRepository aux reader ?!)
 			return (*reader).Execute(data)
 		}
 	}
-	return "", false
+	return "", false, nil
 }
 
 /*
diff --git a/pkg/protocol/rules/readers/EraseFileRule.go b/pkg/protocol/rules/readers/EraseFileRule.go
index 5d68d47..1467aa6 100644
--- a/pkg/protocol/rules/readers/EraseFileRule.go
+++ b/pkg/protocol/rules/readers/EraseFileRule.go
@@ -1,6 +1,9 @@
 package readers
 
-import "StoreBackEnd/pkg/protocol"
+import (
+	"StoreBackEnd/pkg/protocol"
+	"bufio"
+)
 
 // EraseFileRulePrefix Identifiant de cette règle
 const EraseFileRulePrefix = "ERASEFILE"
@@ -26,13 +29,13 @@ func (rule EraseFileRule) GetCmd() string {
 	return rule.Cmd
 }
 
-func (rule EraseFileRule) Execute(data string) (string, bool) {
+func (rule EraseFileRule) Execute(data string) (string, bool, func(r *bufio.Reader) (string, bool)) {
 	if rule.Match(data) {
 		values := rule.matcher.Parse(data)
 		println(values[1], " est le hash du fichier à supprimer")
-		return "Parsing : Fichier avec le hash " + values[1] + " supprimé", true
+		return "Parsing : Fichier avec le hash " + values[1] + " supprimé", true, nil
 	} else {
-		return "Parsing : EraseFileRule command incorrecte", false
+		return "Parsing : EraseFileRule command incorrecte", false, nil
 	}
 }
 
diff --git a/pkg/protocol/rules/readers/SendFileRule.go b/pkg/protocol/rules/readers/SendFileRule.go
index 9cd6f93..1cf2c20 100644
--- a/pkg/protocol/rules/readers/SendFileRule.go
+++ b/pkg/protocol/rules/readers/SendFileRule.go
@@ -1,6 +1,9 @@
 package readers
 
-import "StoreBackEnd/pkg/protocol"
+import (
+	"StoreBackEnd/pkg/protocol"
+	"bufio"
+)
 
 // SendFileRulePrefix Rule command prefix
 const SendFileRulePrefix = "ffe_sendfile"
@@ -27,19 +30,23 @@ func (rule SendFileRule) GetCmd() string {
 }
 
 // Execute the Rule with a string command.
-func (rule SendFileRule) Execute(data string) (string, bool) {
+func (rule SendFileRule) Execute(data string) (string, bool, func(r *bufio.Reader) (string, bool)) {
 	if rule.Match(data) { // TODO : cloture this command.
 		values := rule.matcher.Parse(data)
-		//callback := func() {
-		//
-		//}
-		//callback()
+
+		// print received data
 		println(values[1], " File Name Hash")
 		println(values[2], " File Size")
 		println(values[3], " File Content Hash")
-		return "SEND_OK\r\n", true
+
+		// function callback
+		callback := func(r *bufio.Reader) (string, bool) {
+
+			return "", false
+		}
+		return "SEND_OK\r\n", true, callback
 	} else {
-		return "jjdjd", false
+		return "jjdjd", false, nil
 	}
 }
 
diff --git a/pkg/utils/FileReceiver.go b/pkg/utils/FileReceiver.go
new file mode 100644
index 0000000..d4b585b
--- /dev/null
+++ b/pkg/utils/FileReceiver.go
@@ -0,0 +1 @@
+package utils
diff --git a/resources/AppConfig.json b/resources/AppConfig.json
index feb7042..6908b10 100644
--- a/resources/AppConfig.json
+++ b/resources/AppConfig.json
@@ -1,5 +1,5 @@
 {
-  "multicastAddress" : "226.66.66.1:42500",
+  "multicastAddress" : "226.66.66.1:15502",
   "multicastSecond" : 10,
   "domain" : "lightcontainerSB01",
   "unicastPort" : 58000