diff --git a/lib/api/api.c b/lib/api/api.c
index e7d0bc5..f384732 100644
--- a/lib/api/api.c
+++ b/lib/api/api.c
@@ -160,7 +160,13 @@ int openConnection(const char* sockname, int msec, const struct timespec abstime
 }
 
 int closeConnection(const char* sockname) {
-    if (!sockname || strncmp(socketName, sockname, sizeof(socketName)) != 0) {
+    if (!sockname) {
+	errno = EINVAL;
+	return -1;
+    }
+    // if closing a different socket -> error
+    if(strncmp(socketName, "", sizeof(socketName)) != 0
+       && strncmp(socketName, sockname, sizeof(socketName)) != 0) {
 	errno = EINVAL;
 	return -1;
     }
@@ -201,7 +207,8 @@ int openFile(const char* pathname, int flags) {
     }
 
     // invio al server la stringa "openFile|$(pathname)|$(flags)"
-    long len = strlen("openFile")+1+strlen(pathname)+1+((int)log10(flags?flags:1)+1)+1;
+    int leng_flags = snprintf(NULL, 0, "%d", flags);
+    long len = strlen("openFile")+1+strlen(pathname)+1+leng_flags+1;
     char *cmd = malloc(len);
     if(!cmd) {
 	perror("malloc");
@@ -436,15 +443,16 @@ int readNFiles(int N, const char* dirname) {
 	return -1;
     }
 
-    // invio al server la stringa "readNFile|$(N)"
-    long len = strlen("readNFile")+1+((int)log10((N?N:1))+1)+1;
+    // invio al server la stringa "readNFiles|$(N)"
+    int lenght_n = snprintf(NULL, 0, "%d", N);
+    long len = strlen("readNFiles")+1+lenght_n+1;
     char *cmd = malloc(len);
     if(!cmd) {
 	perror("malloc");
 	return -1;
     }
     memset(cmd, 0, len);
-    snprintf(cmd, len, "readNFile|%d", N);
+    snprintf(cmd, len, "readNFiles|%d", N);
     len = strnlen(cmd, len);
 
     // send cmd
@@ -480,6 +488,14 @@ int readNFiles(int N, const char* dirname) {
 	free(cmd);
 	return -1;
     }
+
+    if(openedFiles->print){
+	for(int i=0;i<res->numfiles;++i) {
+	    fprintf(openedFiles->out, "%d) %s\n", i, res->rf[i].path);
+	}
+	fflush(openedFiles->out);
+    }
+
     // save files to directory
     if(storeFilesInDirectory(dirname, res->numfiles, res->rf) == -1) {
 	perror("storeFilesindirectory");
@@ -567,7 +583,8 @@ int writeFile(const char* pathname, const char* dirname) {
     }
 
     // invio al server la stringa "writeFile|$(pathname)|$(size)"
-    long len = strlen("writeFile")+1+strlen(pathname)+1+((int) log10(size?size:1)+1)+1;
+    int leng_size = snprintf(NULL, 0, "%zu", size);
+    long len = strlen("writeFile")+1+strlen(pathname)+1+leng_size+1;
     char *cmd = calloc(len, sizeof(char));
     if(!cmd) {
 	perror("calloc");
@@ -1216,6 +1233,7 @@ int reciveData(response_t *res, int expected) {
 	    perror("calloc");
 	    return -1;
 	}
+
 	// get files
 	for(int i=0;i<res->numfiles;++i) {
 	    // read path
@@ -1241,14 +1259,25 @@ int reciveData(response_t *res, int expected) {
 	    readnres = readn(fd_skt, &res->rf[i].filelen, sizeof(int64_t));
 	    if(readnres<=0) // readn sets errno
 		return -1;
+
+	    if(res->rf[i].filelen == 0) {
+		res->rf[i].file = calloc(1, sizeof(char));
+		if(!res->rf[i].file){
+		    perror("calloc");
+		    return -1;
+		}
+		continue;
+	    }
+
 	    res->rf[i].file = calloc(res->rf[i].filelen, sizeof(char));
 	    if(!res->rf[i].file){
 		perror("calloc");
 		return -1;
 	    }
 	    readnres = readn(fd_skt, res->rf[i].file, res->rf[i].filelen);
-	    if(readnres<=0) // readn sets errno
+	    if(readnres<=0) {// readn sets errno
 		return -1;
+	    }
 	}
 	return 0;
     }
@@ -1292,6 +1321,16 @@ int reciveData(response_t *res, int expected) {
 	    readnres = readn(fd_skt, &res->rf[i].filelen, sizeof(int64_t));
 	    if(readnres<=0) // readn sets errno
 		return -1;
+
+	    if(res->rf[i].filelen == 0) {
+		res->rf[i].file = calloc(1, sizeof(char));
+		if(!res->rf[i].file){
+		    perror("calloc");
+		    return -1;
+		}
+		continue;
+	    }
+
 	    res->rf[i].file = calloc(res->rf[i].filelen, sizeof(char));
 	    if(!res->rf[i].file){
 		perror("calloc");
diff --git a/lib/threadpool/apiFile.c b/lib/threadpool/apiFile.c
index 4eaaf7b..7ac2176 100644
--- a/lib/threadpool/apiFile.c
+++ b/lib/threadpool/apiFile.c
@@ -164,7 +164,7 @@ _sendMF_cleanup:
 }
 
 // invio il messaggio al client e poi n file
-void sendMessageFileN(char *m, fileT **f, int n, long fd_c, taglia_t *taglia, char *mlog) {
+void sendMessageFileN(char *m, fileT **f, int64_t n, long fd_c, taglia_t *taglia, char *mlog) {
     if(!f) {
 	errno = EINVAL;
 	char errmlog[2*LOGBUFSIZE] = "Errore negli argomenti alla funzione sendMessagefile (fileT == NULL). Messaggio originale:\n\t";
@@ -360,13 +360,13 @@ void readNFiles(int num, queueT *q, long fd_c, taglia_t *taglia){
     }
 
     int oldNum = num;
-    num = (num<=0 || num>getLen(q))? getLen(q) : num;
-    fileT **toSend = calloc(num, sizeof(fileT *));
+    int64_t ntosend = (num<=0 || num>getLen(q))? getLen(q) : num;
+    fileT **toSend = calloc(ntosend, sizeof(fileT *));
 
     n += snprintf(tmp_buf+n, m-n, "Client %ld ha richiesto una readNFile (n = %d) e' terminata con successo. File inviati:\n", fd_c, num);
     // extract n files, we dont check if the client can actually modify
     // the files since we add them back immediatly
-    for(int i=0;i<num;++i) { /* TODO: fix here */
+    for(int i=0;i<ntosend;++i) {
 	toSend[i] = dequeue(q);
 	if(!toSend[i]) {
 	    n = 0;
@@ -386,7 +386,7 @@ void readNFiles(int num, queueT *q, long fd_c, taglia_t *taglia){
 	n += snprintf(tmp_buf+n, m-n, "\t%d) \"%s\"\n", i, toSend[i]->filepath);
     }
 
-    sendMessageFileN(MEOK, toSend, num, fd_c, taglia, tmp_buf);
+    sendMessageFileN(MEOK, toSend, ntosend, fd_c, taglia, tmp_buf);
     free(toSend);
     return;
 }
diff --git a/scripts/test1.sh b/scripts/test1.sh
index 1c30757..4a8d863 100644
--- a/scripts/test1.sh
+++ b/scripts/test1.sh
@@ -1,8 +1,8 @@
 #!/bin/sh
-./client -t 200 -f mysock -w testFiles/1 -D Wdir -W testFiles/1/file1 -r testFiles/1/file1 -d Rdir -R n=3 -p
+./client -t 200 -f socket -w testFiles/1 -D Wdir -W testFiles/1/file1 -r testFiles/1/file1 -d Rdir -R n=3 -p
 
 exit 0
 
-./client -t 200 -f mysock -w test -D Wdir -W test/filepesante -r test/filepesante -d Rdir -R n=3 -l test/filepesante -u test/filepesante -c test/filepesante -p
+./client -t 200 -f socket -w test -D Wdir -W test/filepesante -r test/filepesante -d Rdir -R n=3 -l test/filepesante -u test/filepesante -c test/filepesante -p
 
 exit 0
diff --git a/src/client.c b/src/client.c
index 8a9ee58..f15d424 100644
--- a/src/client.c
+++ b/src/client.c
@@ -747,24 +747,13 @@ int cmd_R(char *numStr, char *dir, int print) {
     if(!numStr) // skips the step of converting n from string to int
 	goto skipGetNumber;
 
-    // we copy numStr because we are nice
-    char *tofree = malloc(strnlen(numStr, MAXARGLENGTH)+1);
-    if(!tofree) {
-	perror("malloc");
-	return -1;
-    }
-    strncpy(tofree, numStr, strnlen(numStr, MAXARGLENGTH));
+    if(strlen(numStr) < 2)
+	goto skipGetNumber;
 
-    char *secondArg = tofree;
-    strsep_gnu(&secondArg, ",");
-
-    if (!secondArg) {
-	n = -1;
-    } else if (secondArg[0] == 'n' && secondArg[1] == '=') {
-	char *number = &secondArg[2];
+    if (numStr[0] == 'n' && numStr[1] == '=') {
+	char *number = &numStr[2];
 	for (int i = 0; i < strlen(number); ++i) {
 	    if (!isdigit(number[i])) {
-		free(tofree);
 		errno = EINVAL;
 		return -1;
 	    }
@@ -772,13 +761,10 @@ int cmd_R(char *numStr, char *dir, int print) {
 	n = (int) strtol(number, NULL, 10);
 	n = (n==0)?-1:n;
     } else {
-	free(tofree);
 	errno = EINVAL;
 	return -1;
     }
 
-    free(tofree);
-
 skipGetNumber:
     if (readNFiles(n, dir) == -1) {
 	return -1;
diff --git a/src/server.c b/src/server.c
index 0ae10e7..a2d3aa5 100644
--- a/src/server.c
+++ b/src/server.c
@@ -67,13 +67,16 @@ int main(int argc, char *argv[]) {
     int maxBacklog; CONFGETINT(maxBacklog, config, "socket", "backlog", NULL, 10);
     ini_free(config);
 
+    queueT *queue = NULL;
+    taglia_t *taglia = NULL;
+
     sigset_t mask;
     sigfillset(&mask);
     sigdelset(&mask, SIGPIPE); // tolgo soltanto la sigpipe
 
     if (pthread_sigmask(SIG_SETMASK, &mask, NULL) != 0) {
 	fprintf(stderr, "ERROR setting mask\n");
-	goto _cleanup;
+	goto _cleanup_beforesigthread;
     }
 
     // ignoro SIGPIPE per evitare di essere terminato da una scrittura su un socket
@@ -82,18 +85,18 @@ int main(int argc, char *argv[]) {
     s.sa_handler = SIG_IGN;
     if ( (sigaction(SIGPIPE,&s,NULL)) == -1 ) {
 	perror("sigaction");
-	goto _cleanup;
+	goto _cleanup_beforesigthread;
     }
 
     // remove("mysock"); maybe necessary???
 
 
     // creo la struttura per il log
-    taglia_t *taglia = taglia_init(logFile, 0);
+    taglia = taglia_init(logFile, 0);
     free(logFile); // free del nome del file
     if(taglia==NULL) {
 	perror("taglia_init");
-	goto _cleanup;
+	goto _cleanup_beforesigthread;
     }
     // risorse per il logfile usate nel main
     char buf[2048];
@@ -109,7 +112,7 @@ int main(int argc, char *argv[]) {
     }
     if (pipe(request_pipe) == -1) {
 	perror("pipe");
-	goto _cleanup;
+	goto _cleanup_beforesigthread;
     }
 
 
@@ -171,7 +174,7 @@ int main(int argc, char *argv[]) {
 
 
     // creo la queue
-    queueT *queue = createQueue(maxFiles, maxSize);
+    queue = createQueue(maxFiles, maxSize);
 
     // creo la lista dei client in attesa a una lock
     waiting_t *waiting = NULL;
@@ -437,6 +440,9 @@ int main(int argc, char *argv[]) {
     return 0;
 
 _cleanup:
+    pthread_cancel(sighandler_thread);
+    pthread_join(sighandler_thread, NULL);
+_cleanup_beforesigthread:
     if(queue) {
 	destroyQueue(queue);
     }