diff --git a/puit.c b/puit.c
new file mode 100644
index 0000000..d36501e
--- /dev/null
+++ b/puit.c
@@ -0,0 +1,60 @@
+#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>
+
+#define _OE_SOCKETS
+#define PORT_NUM    9000
+
+void initSocket();
+
+int sock;
+char buffer[1024];
+struct hostent *hp;
+struct sockaddr_in socketClient,socketServer;
+
+int main(void)
+{
+    if((sock=socket(AF_INET,SOCK_DGRAM,0)) == -1)
+    {
+        printf("échec création du socket\n");
+        exit(1);
+    }
+    memset(&socketClient, 0, sizeof(socketClient));
+    memset(&socketServer, 0, sizeof(socketServer));
+
+    initSocket();
+
+
+	if (bind(sock, (const struct sockaddr *)&socketServer, sizeof(socketServer)) < 0 )
+	{
+		perror("bind failed");
+		exit(EXIT_FAILURE);
+	}
+
+    int n;
+    unsigned int lg_socketClient = sizeof(socketClient);
+
+    n = recvfrom(sock, (char *)buffer, 1024, 0, (struct sockaddr*) &socketClient,&lg_socketClient);
+    buffer[n] = '\0';
+    printf("Server : %s\n", buffer);
+    close(sock);
+    return 0;
+}
+
+void initSocket()
+{
+    socketServer.sin_family=AF_INET;
+    socketServer.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);
+}
\ No newline at end of file
diff --git a/source.c b/source.c
new file mode 100644
index 0000000..45e5e4e
--- /dev/null
+++ b/source.c
@@ -0,0 +1,45 @@
+#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>
+
+#define PORT_NUM    9000
+
+void initSocket();
+
+int sock;
+int lg_emis;
+struct hostent *hp;
+struct sockaddr_in socketServer;
+
+int main(void)
+{
+    if((sock=socket(AF_INET,SOCK_DGRAM,0)) == -1)
+    {
+        printf("échec création du socket\n");
+        exit(1);
+    }
+    memset(&socketServer, 0, sizeof(socketServer));
+    initSocket();
+    lg_emis=sendto(sock, "aaaaa", 6, 0, (struct sockaddr*)&socketServer, sizeof(socketServer));
+    printf("lgemis = %d\n",lg_emis);
+    close(sock);
+    return 0;
+}
+
+void initSocket()
+{
+    socketServer.sin_family=AF_INET;
+    socketServer.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);
+}
\ No newline at end of file