diff --git a/main.c b/main.c
new file mode 100644
index 0000000..b5c2637
--- /dev/null
+++ b/main.c
@@ -0,0 +1,51 @@
+#include "tsock.h"
+
+int main (int argc, char **argv)
+{
+	int c;
+	extern char *optarg;
+	extern int optind;
+	int nb_message = -1; /* Nb de messages à envoyer ou à recevoir, par défaut : 10 en émission, infini en réception */
+	int source = -1 ; /* 0=puits, 1=source */
+	while ((c = getopt(argc, argv, "pn:s")) != -1) {
+		switch (c) {
+		case 'p':
+			if (source != -1) {
+				printf("usage: cmd [-p|-s][-n ##]\n");
+				exit(1);
+			}
+			source = 0;
+			break;
+		case 's':
+			if (source != -1) {
+				printf("usage: cmd [-p|-s][-n ##]\n");
+				exit(1) ;
+			}
+			source = 1;
+			break;
+		case 'n':
+			nb_message = atoi(optarg);
+			break;
+		default:
+			printf("usage: cmd [-p|-s][-n ##]\n");
+			break;
+		}
+	}
+
+	if (source == -1) {
+		printf("usage: cmd [-p|-s][-n ##]\n");
+		exit(1);
+	}
+
+	setNbMessage(&nb_message,source);
+	printInfo(nb_message,source);
+
+	if(source)
+	{
+		printf("Source : %d\n",nb_message);
+	}
+	else
+	{
+		printf("Puit : %d\n",nb_message);
+	}
+}
\ No newline at end of file
diff --git a/puit.c b/puit.c
index 06ea25c..321abd7 100644
--- a/puit.c
+++ b/puit.c
@@ -24,7 +24,6 @@ int main(void)
     creationSocket(&sock,&socketClient);
     initSocketAddr(&socketClient,0);
 
-
 	if (bind(sock, (const struct sockaddr *)&socketClient, sizeof(socketClient)) < 0 )
 	{
 		perror("bind failed");
@@ -32,9 +31,9 @@ int main(void)
 	}
 
     int n;
-    unsigned int lg_socketClient = sizeof(socketClient);
+    unsigned int lg_socketServer = sizeof(socketServer);
 
-    n = recvfrom(sock, (char *)buffer, 1024, 0, (struct sockaddr*) &socketClient,&lg_socketClient);
+    n = recvfrom(sock, (char *)buffer, 1024, 0, (struct sockaddr*) &socketServer,&lg_socketServer);
     buffer[n] = '\0';
     printf("Server : %s\n", buffer);
     close(sock);
diff --git a/source b/source
new file mode 100755
index 0000000..3468d3f
Binary files /dev/null and b/source differ
diff --git a/source.c b/source.c
index 45e5e4e..84ee9f9 100644
--- a/source.c
+++ b/source.c
@@ -15,7 +15,7 @@ void initSocket();
 int sock;
 int lg_emis;
 struct hostent *hp;
-struct sockaddr_in socketServer;
+struct sockaddr_in socketClient;
 
 int main(void)
 {
@@ -24,9 +24,9 @@ int main(void)
         printf("échec création du socket\n");
         exit(1);
     }
-    memset(&socketServer, 0, sizeof(socketServer));
+    memset(&socketClient, 0, sizeof(socketClient));
     initSocket();
-    lg_emis=sendto(sock, "aaaaa", 6, 0, (struct sockaddr*)&socketServer, sizeof(socketServer));
+    lg_emis=sendto(sock, "aaaaa", 6, 0, (struct sockaddr*)&socketClient, sizeof(socketClient));
     printf("lgemis = %d\n",lg_emis);
     close(sock);
     return 0;
@@ -34,12 +34,12 @@ int main(void)
 
 void initSocket()
 {
-    socketServer.sin_family=AF_INET;
-    socketServer.sin_port=htons(PORT_NUM);
+    socketClient.sin_family=AF_INET;
+    socketClient.sin_port=htons(PORT_NUM);
     if((hp = gethostbyname("localhost")) == NULL)
     {
         printf("erreur gethostbyname\n");
         exit(1);
     }
-    memcpy((char*)&(socketServer.sin_addr.s_addr),hp->h_addr_list[0],hp->h_length);
+    memcpy((char*)&(socketClient.sin_addr.s_addr),hp->h_addr_list[0],hp->h_length);
 }
\ No newline at end of file
diff --git a/tsock.c b/tsock.c
new file mode 100644
index 0000000..9db2872
--- /dev/null
+++ b/tsock.c
@@ -0,0 +1,22 @@
+#include "tsock.h"
+
+void setNbMessage(int * nb, int source)
+{
+	if((*nb == -1) && (source))
+	{
+		*nb = 10;
+	}
+}
+
+void printInfo(int nb, int source)
+{
+	if(source)
+	{
+		printf("tsock lance en mode source, nombre de tampons à envoyer : %d\n", nb);
+	}
+	else
+	{
+		printf("tsock lance en mode puit, nombre de tampons à recevoir :");
+		nb != -1 ? printf("%d\n", nb) : printf("infini\n");
+	}
+}
\ No newline at end of file
diff --git a/tsock.h b/tsock.h
new file mode 100644
index 0000000..da163c4
--- /dev/null
+++ b/tsock.h
@@ -0,0 +1,17 @@
+#ifndef HEADER_TSOCK
+#define HEADER_TSOCK
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <errno.h>
+
+void setNbMessage(int * nb, int source);
+void printInfo(int nb, int source);
+
+#endif
\ No newline at end of file