From 099d09b73c6884cbb6121d50d3e8df2ca25248ea Mon Sep 17 00:00:00 2001
From: Giovanni Di Grezia <xgiovio@gmail.com>
Date: Sat, 17 May 2014 21:18:32 +0200
Subject: [PATCH] implementato alcuni verifiche di errori. il file 11 e'
 incompleto e riguarda l'errore nel caso in cui un client legga da socket e il
 server e' terminato prematuramente

---
 .../client                                    | Bin 0 -> 9200 bytes
 .../daytimecli.c                              |  28 ++++++
 .../daytimecli.c~                             |  31 ++++++
 .../daytimecli.o                              | Bin 0 -> 1672 bytes
 .../daytimesrv.c                              |  89 ++++++++++++++++++
 .../daytimesrv.c~                             |  41 ++++++++
 .../daytimesrv.o                              | Bin 0 -> 2940 bytes
 .../makefile                                  |   9 ++
 .../makefile~                                 |   8 ++
 .../readme                                    |   4 +
 .../readme~                                   |   0
 .../server                                    | Bin 0 -> 9572 bytes
 11.client-server-print-ip-port-bothv2/client  | Bin 0 -> 9556 bytes
 .../daytimecli.c                              |  76 +++++++++++++++
 .../daytimecli.c~                             |  31 ++++++
 .../daytimecli.o                              | Bin 0 -> 3076 bytes
 .../daytimesrv.c                              |  63 +++++++++++++
 .../daytimesrv.c~                             |  41 ++++++++
 .../daytimesrv.o                              | Bin 0 -> 2412 bytes
 .../makefile                                  |   9 ++
 .../makefile~                                 |   8 ++
 11.client-server-print-ip-port-bothv2/readme  |   5 +
 11.client-server-print-ip-port-bothv2/readme~ |   0
 11.client-server-print-ip-port-bothv2/server  | Bin 0 -> 9644 bytes
 7.client-server-print-ip-port-both/client     | Bin 9508 -> 9508 bytes
 .../daytimecli.c                              |   4 +-
 .../daytimecli.o                              | Bin 2436 -> 2276 bytes
 extra/da_vedere                               |   5 +
 28 files changed, 449 insertions(+), 3 deletions(-)
 create mode 100755 10.client-server_recursive_kill_zombies_plus_err_accept/client
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c~
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.o
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c~
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.o
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/makefile
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/makefile~
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/readme
 create mode 100644 10.client-server_recursive_kill_zombies_plus_err_accept/readme~
 create mode 100755 10.client-server_recursive_kill_zombies_plus_err_accept/server
 create mode 100755 11.client-server-print-ip-port-bothv2/client
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimecli.c
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimecli.c~
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimecli.o
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimesrv.c
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimesrv.c~
 create mode 100644 11.client-server-print-ip-port-bothv2/daytimesrv.o
 create mode 100644 11.client-server-print-ip-port-bothv2/makefile
 create mode 100644 11.client-server-print-ip-port-bothv2/makefile~
 create mode 100644 11.client-server-print-ip-port-bothv2/readme
 create mode 100644 11.client-server-print-ip-port-bothv2/readme~
 create mode 100755 11.client-server-print-ip-port-bothv2/server

diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/client b/10.client-server_recursive_kill_zombies_plus_err_accept/client
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diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c
new file mode 100644
index 0000000..b4d715d
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c
@@ -0,0 +1,28 @@
+
+#include	"../basic.h"
+
+int main(int argc, char **argv) {
+	int			sockfd;
+	struct sockaddr_in	servaddr;
+
+	if (argc != 3){
+		printf("usage: daytimecli <indirizzoIP> <porta> \n");
+		exit(0);
+}
+        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
+			printf("socket error\n");
+			exit(0);
+}
+	servaddr.sin_family = AF_INET;
+        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
+
+        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
+                printf("inet_pton error for %s\n", argv[1]);
+		exit(0);
+}
+	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
+		printf("connect error\n");
+		exit(0);
+	}
+	exit(0);
+}
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c~ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c~
new file mode 100644
index 0000000..239a866
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.c~
@@ -0,0 +1,31 @@
+/* Client che interroga un daytime server */
+
+#include	"../basic.h"
+
+int main(int argc, char **argv) {
+	int			sockfd, n;
+	char			recvline[MAXLINE + 1];
+	struct sockaddr_in	servaddr;
+
+	if (argc != 3){
+		printf("usage: daytimecli <indirizzoIP> <porta> \n");
+		exit(0);
+}
+        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
+			printf("socket error\n");
+			exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
+
+        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
+                printf("inet_pton error for %s\n", argv[1]);
+		exit(0);
+}
+	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
+		printf("connect error\n");
+		exit(0);
+	}
+	exit(0);
+}
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.o b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimecli.o
new file mode 100644
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GIT binary patch
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diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c
new file mode 100644
index 0000000..4f55200
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c
@@ -0,0 +1,89 @@
+
+#include	"../basic.h"
+#include	<time.h>
+
+
+
+void sigchldaction (int signal){
+
+	int status, pid;
+     
+   for (pid = waitpid(-1,&status,WNOHANG);pid > 0;pid = waitpid(-1,&status,WNOHANG)){
+          fprintf(stdout,"Server:Child %d terminated\n",pid);
+     }  
+
+
+}
+
+int main(int argc, char **argv) {
+	
+	
+	int			listenfd, connfd, n;
+	struct sockaddr_in	servaddr;
+	char			buff[INET_ADDRSTRLEN];
+	short port;
+
+	if (argc != 2 ){
+		printf("usage: daytimesrv <porta>\n");
+		exit(0);
+}
+	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
+		printf("socket error\n");
+		exit(0);
+}
+	servaddr.sin_family      = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
+	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
+
+	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
+		printf("bind error\n"); exit(0);
+}
+	if( listen(listenfd, 5) < 0 )
+		{ printf("listen error\n");
+		  exit(0);
+		}
+
+	struct sockaddr_in	client_addr;
+	unsigned int client_addr_len = sizeof(client_addr);
+
+	struct sigaction sigchldstructure;
+               sigchldstructure.sa_handler = sigchldaction;
+               sigchldstructure.sa_flags = 0;
+          
+    sigaction (SIGCHLD, &sigchldstructure, NULL);
+
+	for ( ; ; ) {
+		if( (connfd = accept(listenfd, (struct sockaddr *) &client_addr, &client_addr_len)) < 0)
+		{ 
+			if(errno == EINTR || errno==ECONNABORTED)
+				continue;
+			printf("accept error\n");
+			exit(1);
+
+		}
+		
+		int split = fork();
+		
+		if ( split < 0) {
+			printf("fork for iterative server failed\n");
+			exit(-1);
+		}
+		
+		if (split == 0){
+			close(listenfd);
+			
+			inet_ntop(AF_INET, &(client_addr.sin_addr), buff, INET_ADDRSTRLEN); // get client address
+			port = ntohs(client_addr.sin_port);// get client port
+			fprintf (stdout,"%s%c%hu\n",buff,':',port);
+			exit(0);
+			
+		} else {
+			
+			printf("connection managed by a child process\n");
+			close(connfd);
+		}
+		
+		
+
+	}
+}
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c~ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c~
new file mode 100644
index 0000000..5a71bf1
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.c~
@@ -0,0 +1,41 @@
+/* stampa l'ip del client */
+
+#include	"../basic.h"
+#include	<time.h>
+
+int main(int argc, char **argv) {
+	int			listenfd, connfd, n;
+	struct sockaddr_in	servaddr;
+	char			buff[MAXLINE];
+	time_t			ticks;
+
+	if (argc != 2 ){
+		printf("usage: daytimesrv <porta>\n");
+		exit(0);
+}
+	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
+		printf("socket error\n");
+		exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family      = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
+	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
+
+	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
+		printf("bind error\n"); exit(0);
+}
+	if( listen(listenfd, 5) < 0 )
+		{ printf("listen error\n");
+		  exit(0);
+}
+	for ( ; ; ) {
+		if( (connfd = accept(listenfd, (struct sockaddr *) NULL, NULL)) < 0)
+		{ printf("accept error\n"); exit(0);} else {
+		}
+
+		n=read(connfd, buff, MAXLINE);
+		fprintf (stdout,%s\n,buff);
+		close(connfd);
+	}
+}
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.o b/10.client-server_recursive_kill_zombies_plus_err_accept/daytimesrv.o
new file mode 100644
index 0000000000000000000000000000000000000000..95d195e96585d15c737982eeb2337393484e3280
GIT binary patch
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diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/makefile b/10.client-server_recursive_kill_zombies_plus_err_accept/makefile
new file mode 100644
index 0000000..16fdd6d
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/makefile
@@ -0,0 +1,9 @@
+all : server client
+server : daytimesrv.o ../fun-corso-reti.o
+	gcc -o server daytimesrv.o ../fun-corso-reti.o
+client : daytimecli.o ../fun-corso-reti.o
+	gcc -o client daytimecli.o ../fun-corso-reti.o
+daytimesrv.o : daytimesrv.c ../basic.h
+	gcc -c -o daytimesrv.o daytimesrv.c
+fun-corso-reti.o : ../fun-corso-reti.c ../basic.h
+	gcc -c -o ../fun-corso-reti.o ../fun-corso-reti.c
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/makefile~ b/10.client-server_recursive_kill_zombies_plus_err_accept/makefile~
new file mode 100644
index 0000000..ed76715
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/makefile~
@@ -0,0 +1,8 @@
+server : daytimesrv.o ../fun-corso-reti.o
+	gcc -o server daytimesrv.o ../fun-corso-reti.o
+client : daytimecli.o ../fun-corso-reti.o
+	gcc -o client daytimecli.o ../fun-corso-reti.o
+daytimesrv.o : daytimesrv.c ../basic.h
+	gcc -c -o daytimesrv.o daytimesrv.c
+fun-corso-reti.o : ../fun-corso-reti.c ../basic.h
+	gcc -c -o ../fun-corso-reti.o ../fun-corso-reti.c
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/readme b/10.client-server_recursive_kill_zombies_plus_err_accept/readme
new file mode 100644
index 0000000..f251fd8
--- /dev/null
+++ b/10.client-server_recursive_kill_zombies_plus_err_accept/readme
@@ -0,0 +1,4 @@
+il server attende una connessione dal client 
+il server non blocca poiché e’ attivo in modo ricorsivo
+il client si connette soltanto al server
+il server rimuvoe i figli zombie mediante sigchld
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/readme~ b/10.client-server_recursive_kill_zombies_plus_err_accept/readme~
new file mode 100644
index 0000000..e69de29
diff --git a/10.client-server_recursive_kill_zombies_plus_err_accept/server b/10.client-server_recursive_kill_zombies_plus_err_accept/server
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diff --git a/11.client-server-print-ip-port-bothv2/daytimecli.c b/11.client-server-print-ip-port-bothv2/daytimecli.c
new file mode 100644
index 0000000..8de041f
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/daytimecli.c
@@ -0,0 +1,76 @@
+
+
+#include	"../basic.h"
+#include    <unistd.h>
+
+int main(int argc, char **argv) {
+	int			sockfd;
+	struct sockaddr_in	servaddr;
+
+	if (argc != 3){
+		printf("usage: daytimecli <indirizzoIP> <porta> \n");
+		exit(0);
+}
+        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
+			printf("socket error\n");
+			exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
+
+        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
+                printf("inet_pton error for %s\n", argv[1]);
+		exit(0);
+}
+	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
+		printf("connect error\n");
+		exit(0);
+	}
+	
+	struct sockaddr_in	r_server_local_addr;
+	unsigned int r_server_local_addr_len = sizeof(r_server_local_addr);
+	
+	char * socket_buffer = (char *) malloc (r_server_local_addr_len) ;
+	int ridden;
+	ridden = read (sockfd, socket_buffer,r_server_local_addr_len );
+	fprintf(stdout,"Ho letto la prima volta %d bytes\n",ridden);
+	ridden = read (sockfd, socket_buffer,r_server_local_addr_len );
+	fprintf(stdout,"Ho letto la seconda volta %d bytes\n",ridden);
+
+
+	fprintf(stdout,"I'm sleeping for 20sec\n");
+	int  left = sleep(20);
+	if (left == 0){
+		  fprintf(stdout,"I'm here after 20 sec\n'");
+		}else{
+		  fprintf(stdout,"Waked up before 20 sec\n'");
+		}
+
+
+	ridden = read (sockfd, socket_buffer,r_server_local_addr_len );
+	if (ridden < 0){
+		fprintf(stdout,"Errore durante la lettura\n");
+		exit(-1);
+	} else {
+		fprintf(stdout,"Ho letto la terza volta %d bytes\n",ridden);
+	}
+
+
+
+
+	
+	memcpy (&r_server_local_addr,socket_buffer, r_server_local_addr_len);
+	
+	
+	char buff[INET_ADDRSTRLEN];
+	short port;
+	
+	inet_ntop(AF_INET, &(r_server_local_addr.sin_addr), buff, INET_ADDRSTRLEN);// get ip
+	port = ntohs(r_server_local_addr.sin_port);// get  port
+		
+	fprintf (stdout,"%s%c%hu\n",buff,':',port);
+	
+	
+	exit(0);
+}
diff --git a/11.client-server-print-ip-port-bothv2/daytimecli.c~ b/11.client-server-print-ip-port-bothv2/daytimecli.c~
new file mode 100644
index 0000000..239a866
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/daytimecli.c~
@@ -0,0 +1,31 @@
+/* Client che interroga un daytime server */
+
+#include	"../basic.h"
+
+int main(int argc, char **argv) {
+	int			sockfd, n;
+	char			recvline[MAXLINE + 1];
+	struct sockaddr_in	servaddr;
+
+	if (argc != 3){
+		printf("usage: daytimecli <indirizzoIP> <porta> \n");
+		exit(0);
+}
+        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
+			printf("socket error\n");
+			exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
+
+        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
+                printf("inet_pton error for %s\n", argv[1]);
+		exit(0);
+}
+	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
+		printf("connect error\n");
+		exit(0);
+	}
+	exit(0);
+}
diff --git a/11.client-server-print-ip-port-bothv2/daytimecli.o b/11.client-server-print-ip-port-bothv2/daytimecli.o
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diff --git a/11.client-server-print-ip-port-bothv2/daytimesrv.c b/11.client-server-print-ip-port-bothv2/daytimesrv.c
new file mode 100644
index 0000000..12c17fd
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/daytimesrv.c
@@ -0,0 +1,63 @@
+
+
+#include	"../basic.h"
+#include	<time.h>
+
+int main(int argc, char **argv) {
+	int			listenfd, connfd, n;
+	struct sockaddr_in	servaddr;
+	char			buff[INET_ADDRSTRLEN];
+	short			port;
+
+	if (argc != 2 ){
+		printf("usage: daytimesrv <porta>\n");
+		exit(0);
+}
+	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
+		printf("socket error\n");
+		exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family      = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
+	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
+
+	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
+		printf("bind error\n"); exit(0);
+}
+	if( listen(listenfd, 5) < 0 )
+		{ printf("listen error\n");
+		  exit(0);
+		}
+
+	struct sockaddr_in	client_addr;
+	unsigned int client_addr_len = sizeof(client_addr);
+	
+	struct sockaddr_in	server_local_addr;
+	unsigned int server_local_addr_len = sizeof(server_local_addr);
+	
+	char * socket_buffer = (char *) malloc (server_local_addr_len) ;
+	
+	
+
+	for ( ; ; ) {
+		if( (connfd = accept(listenfd, (struct sockaddr *) &client_addr, &client_addr_len)) < 0)
+		{ printf("accept error\n");
+		exit(0);
+		} 
+
+		inet_ntop(AF_INET, &(client_addr.sin_addr), buff, INET_ADDRSTRLEN);// get client ip
+		port = ntohs(client_addr.sin_port);// get client port
+		
+		fprintf (stdout,"%s%c%hu\n",buff,':',port);
+		
+		
+		
+		getsockname (connfd, (struct sockaddr *) &server_local_addr, &server_local_addr_len);
+		memcpy (socket_buffer, &server_local_addr, server_local_addr_len);
+		write (connfd,socket_buffer, server_local_addr_len);
+		
+		
+		close(connfd);
+	}
+}
diff --git a/11.client-server-print-ip-port-bothv2/daytimesrv.c~ b/11.client-server-print-ip-port-bothv2/daytimesrv.c~
new file mode 100644
index 0000000..5a71bf1
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/daytimesrv.c~
@@ -0,0 +1,41 @@
+/* stampa l'ip del client */
+
+#include	"../basic.h"
+#include	<time.h>
+
+int main(int argc, char **argv) {
+	int			listenfd, connfd, n;
+	struct sockaddr_in	servaddr;
+	char			buff[MAXLINE];
+	time_t			ticks;
+
+	if (argc != 2 ){
+		printf("usage: daytimesrv <porta>\n");
+		exit(0);
+}
+	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
+		printf("socket error\n");
+		exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family      = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
+	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
+
+	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
+		printf("bind error\n"); exit(0);
+}
+	if( listen(listenfd, 5) < 0 )
+		{ printf("listen error\n");
+		  exit(0);
+}
+	for ( ; ; ) {
+		if( (connfd = accept(listenfd, (struct sockaddr *) NULL, NULL)) < 0)
+		{ printf("accept error\n"); exit(0);} else {
+		}
+
+		n=read(connfd, buff, MAXLINE);
+		fprintf (stdout,%s\n,buff);
+		close(connfd);
+	}
+}
diff --git a/11.client-server-print-ip-port-bothv2/daytimesrv.o b/11.client-server-print-ip-port-bothv2/daytimesrv.o
new file mode 100644
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diff --git a/11.client-server-print-ip-port-bothv2/makefile b/11.client-server-print-ip-port-bothv2/makefile
new file mode 100644
index 0000000..16fdd6d
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/makefile
@@ -0,0 +1,9 @@
+all : server client
+server : daytimesrv.o ../fun-corso-reti.o
+	gcc -o server daytimesrv.o ../fun-corso-reti.o
+client : daytimecli.o ../fun-corso-reti.o
+	gcc -o client daytimecli.o ../fun-corso-reti.o
+daytimesrv.o : daytimesrv.c ../basic.h
+	gcc -c -o daytimesrv.o daytimesrv.c
+fun-corso-reti.o : ../fun-corso-reti.c ../basic.h
+	gcc -c -o ../fun-corso-reti.o ../fun-corso-reti.c
diff --git a/11.client-server-print-ip-port-bothv2/makefile~ b/11.client-server-print-ip-port-bothv2/makefile~
new file mode 100644
index 0000000..ed76715
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/makefile~
@@ -0,0 +1,8 @@
+server : daytimesrv.o ../fun-corso-reti.o
+	gcc -o server daytimesrv.o ../fun-corso-reti.o
+client : daytimecli.o ../fun-corso-reti.o
+	gcc -o client daytimecli.o ../fun-corso-reti.o
+daytimesrv.o : daytimesrv.c ../basic.h
+	gcc -c -o daytimesrv.o daytimesrv.c
+fun-corso-reti.o : ../fun-corso-reti.c ../basic.h
+	gcc -c -o ../fun-corso-reti.o ../fun-corso-reti.c
diff --git a/11.client-server-print-ip-port-bothv2/readme b/11.client-server-print-ip-port-bothv2/readme
new file mode 100644
index 0000000..08fcb7d
--- /dev/null
+++ b/11.client-server-print-ip-port-bothv2/readme
@@ -0,0 +1,5 @@
+il server attende una connessione dal client e stampa ip e porta del client
+il client si connette al server e stampa ip e porta del server
+
+il client prova a leggere più volte, se non c’è niente da leggere le read dal socket restituisce 0.
+L’idea è fare due letture. prima della seconda killare il server in modo da verificare l’errore ricevuto se il client  prova  a leggere. dopo la prima lettura c’è un wait
diff --git a/11.client-server-print-ip-port-bothv2/readme~ b/11.client-server-print-ip-port-bothv2/readme~
new file mode 100644
index 0000000..e69de29
diff --git a/11.client-server-print-ip-port-bothv2/server b/11.client-server-print-ip-port-bothv2/server
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z!&a=_%%l&7Hl>njEAm8z$Rwi&Oe<uj)5&y&Xu>~JE+3EK3tYlQk!aLR&D5*TR7b1Z
zvK8W6ZLxTBsJc01nd$aeB4U}%74jhX0{Uk1mW(IAO0Gl6{5}^25_z0Y`1%^a*FP>|
znF2H4g#*t&BLW?jfy%{qmG?n^pIgHxSK@g^v-&?Zp~?<b9#Q3SRi0GkDOH|U<(sM;
zROP5Duc&fDl{Zv5smj}`T%`VQT%yW(4weL^2$UjFia;p>r3jQFP>Mh)0;LF)B2bDz
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z3UA+53*jEXR@36`OM=hM5bcL3mM|?NVI@-(v_arp!Vsl^+9UCJGD_4zWVUBaX}l`{
zIBWbEVcLvHkNOClTOKxih44@$W~E|MeM;hV%%Tq>VBq%&i;VU*_-#hBmWj9j2*b6Z
zJrYZZx>hq|#WK;D@qDtqDQ1c-Y14`sVjFLE7K*V-kgf;tCMY|9?hwr;L@P881mYN*
zXj&+Ss!*x_K{=;mm0e{ujgx^%b?0;YuZwvl%Ilq(TOd}X`6ZBy;o6jnN@DQtJ1{Rn
ziHD$|o^O*9FLiJOa4^7D4&IM4$cpzkm{)Mb?(Z!Qxmf9sC>+MaC!76L;Tl|E5&r@i
zC0Ut%4eG^beR#-+M}7FR4`20RUiNwI|J{dq1?bg(=)(&fC8(1se0Z4;Kj_0NeR!1*
z*ZA-T9}fF4rcS<z^F9z)W`Y;1oGnbB{N2K5QF2l6Hv(8*;&aG+ALcs-SJHB1UNk<0
zjKpb@Z|Rsm@xR&(;nxUH@7#GPlG>iI)~*-WSXlC0;HycDXu_H&Ys$9FlR3ZJn7^}d
z49wkA*yY%2v)y=DxrZE$+FLm1oKp*o=e+V9f9|2>99PakrH&})aGE)m<{U_#qsTpk
d+~dbRc-#|521B@K%*^3pNEgMtlb17u^dB&BZ72W$

literal 0
HcmV?d00001

diff --git a/7.client-server-print-ip-port-both/client b/7.client-server-print-ip-port-both/client
index f4657651bf375e95768d580ef969ce004ab6f505..9bfcd746a3d426a2290ba4784c63932c583db9a2 100755
GIT binary patch
delta 1136
zcmYLJUq}=|7@u8l<?__Md(hH6^FJn5r=4MfsNl+KT7rt?i&maxgs2!AVQL{ZY~tw%
z28Jkz^b%d3pdOJahl&qz(TmkXR}pRGLqu3naD6j7=5Y7>?f2X7`^`7AJ3Cu3Tj37a
zJZ6Lhgix6T0K+r-zR0#4Wrz)ihIUDgP-Lr)Hq<$;R+9lxcey(HKldf5L$Z;pa&?F#
zi$%5oR~=jpcss<$q7^+_3;!z>Mc?sm-pJlfttAdAQ}B4tOP@s&l-fzL`DjgCIP`|}
zv(V-Wt;WiI-A)4$f@gFEJ}T>{LBq;UAr0i=!+`2=VYpFj+b<s1gC_FS9B2P%LTFui
zEvlOGP1Sm=`a=*}@T$D{Tfa%Zn=|^xK``t_QVlyd_!#-^X6R`U5_nH;y%qwWmE|eh
zTJMgE*Y$$`4tou?fCE&X*{{5($3w88_-U=C`0<9G41$Us$`ZBFt}kg-e!Qh8Qgt}b
z$$E&<f$%D>T2QqDt!@E4-;h5CvV;ke5s}v54ueft?A=oF;FVA)q?fV2@;1R@xqw~Q
zO;>7CBbdmGzgjT-l&Nwpzf@jProgKL>W!5RHq&}1#4YlXQiRBKM5AzG%#xFP5Q^!L
zNBRN3&`W49hPLNpZx#qz?+<+v9u(fdg<nnNlI5f@PbMt(9J<*mmS!MZlQak<m?ng!
zeyVFxn7ZICbzqG?U=_#oct2TQ3C#)M6-rNJn8YxJVH(2>hM5er7-lm(&d|Xym!Xs4
zDTeugmBaQYFjGlQD1FA85G@L%T2`{@5plx&^#2o11|9SoHUmY%60Lj7gjb%tljBHG
zcJwvzV{w&p7w21??{XgF{DAWuXAfr|XFul`oVPiD;Jm|`HV4ByX?4k?O{V#zdco<j
zL9gyugv3tQg=SRW-PzjZYD1U9P%u`w*4pMm7sF8C5F|a1XVo5?hiJ*igdkZ?K38J3
l7-zWy?#Zw{d!LMM9yjs(w|QJ0Y2?!{0?jY>mZ!WG{{hNS2aW&$

delta 1191
zcmZWpTSyd97(O#PvF)leOBiMdV`+2+uLXjs!Ne$8sE8F}?zX$Nv8~&-X%?nNLWj}X
z<wOX+*o7d9lD51()K*KDJ!Ax3=p~<;pofYmdfNVT=BPmj=KJRV&j0=AKW8r2>#o;D
z=bY6xgam|8rvw0_IyPVB9M81G{g#HtNwHAnRI)7f23Hl*59&BqpDyOU2DMwZa&@kD
zlYFtt`JAgoTzwutCf*g5n+>H;fBQ-s9_C-!7vFxigcM2Zh3fb|>9a`2Y#W+tmmxHU
z%rns9BkIK3uvt$75rT)b`)Mkhe$cS?wUP$%&}u+^sB)`iu30i)G8KtzUcM@C1!&K-
z529{p-*n@oV!lsD$cG=x6MxKG#Jzl7ZxRHn+{Lw4xdeEu{E!WLdH@N$r>J=jf@y{2
zY444muR4Ba9$Bog(9mV50M64(&Ox&df*CDIy@r;=GiCz_I`(Ljw2X0L(x^}3S#vj4
zhsr&yhwQzuGyE9W-`9-_qxnA6w8Q+r2CSVob1hG!<tg~j^OkJ0Zxje|+Y8nYroq8Y
z^vvpb;BYFHGIy}Ol>dSfQx)vKd32W{jgUL`oRvEv+1mPmhb9+6?2D35_5*^8R6B}G
zT3|^!<cocPU+66~-%J~sX73ybM$b=k1Rf)v!IhgNa?MdH{2=cfdBrAe8%y($ZAdR6
zkYJ4zmJ(DqGGEXtcvkO!LLa}5vnS()8E*tnE7VFAwlQpH=w|3)=wo=8;Sq)bhCzlQ
zhGB*ghMf#g0`3~h`wlDBG^GmX<E>euP!e#dp|Jm`OYQ6kL|kg2$F91&Bi`dk?@$BY
zNCeQO9`_#X2zq!9X_K`~`n{Dw%k-KcW3p-;5_u)p#@cPYD*u``axUY%owLrlk#j3&
zALkI~Q=HFnzQB2y^Ht8bIYT#e#77jb9BWU%r?v=X2?eF0xom{Qu-D~5EnQ)M#2ZA1
z($MHiA>a>skvk1Vb0DcNm$?(lCt~Dp5k|>W{+^mSyY&k=26Hl;-NK)yi^r<Nnm@~9
PCBuqiJVx=_H6O*lv&SKe

diff --git a/7.client-server-print-ip-port-both/daytimecli.c b/7.client-server-print-ip-port-both/daytimecli.c
index e0aa838..4d31ed5 100644
--- a/7.client-server-print-ip-port-both/daytimecli.c
+++ b/7.client-server-print-ip-port-both/daytimecli.c
@@ -33,9 +33,7 @@ int main(int argc, char **argv) {
 	char * socket_buffer = (char *) malloc (r_server_local_addr_len) ;
 	int ridden;
 	ridden = read (sockfd, socket_buffer,r_server_local_addr_len );
-	fprintf(stdout,"Ho letto la prima volta %d\n bytes",ridden);
-	ridden = read (sockfd, socket_buffer,r_server_local_addr_len );
-	fprintf(stdout,"Ho letto la seconda volta %d\n bytes",ridden);
+	fprintf(stdout,"Ho letto  %d\n bytes",ridden);
 	
 	memcpy (&r_server_local_addr,socket_buffer, r_server_local_addr_len);
 	
diff --git a/7.client-server-print-ip-port-both/daytimecli.o b/7.client-server-print-ip-port-both/daytimecli.o
index ce55f9803089d9f7ad00fe062c1a6c2c68c432b7..5787be5bc9333531c12ce17c7dcf4738b5a8a854 100644
GIT binary patch
delta 641
zcmXw$O-lk%6o$`L$B)X<$<&ahY1M}`Bna(9iGF}XKOqoX2rXJj6mB9+H`yiH7E#nL
zbJMa_P>ZllxM)!jK|#<qDC)g>ym023_nh~h`?VE$HFk4G*-hOMcJ)|pIN9hD3zhUB
zU)6}l8z*U_U)boGX}R&9O|;pa<K#1@sIFzNToCg{m{%xrc|z`pDZA<=8b!wMCwc-0
z5qWk5KozR5$_M3(n3G?^(+az4Lf*TNw2-w(Bv(CkX=|oPN=J)}lw8rWf%eZ|cO+#~
zvqVQeXjWwsokB!*3=D(6f@p{+^9f=f<{OBT{RkRh6U4&yHmLk-pz@bMT!mQxW5_#T
z1k8b|e;SN}vmh?POn^F3#rCq{8>dl*4-nU4cEDliCa5-W3I@S_a0FZjRpSz<<`qD+
zG954uo#A?l>oXvRIe`y+IGdu>eFK&L)76mDvDPL+jXi`8Z;JJy()h2lK4X2%`hxW(
h>nqkbtgn^E;rq{i*V8V_%X6P4rdzkZ10jonv48fmPr(2H

delta 760
zcmYL{K}Z`x6o%jECTmlTS*=wAOSX!%2iG<Yh!;r^gjf`sYY*16Mii1p%qq4ZIatJ)
zOVU9EPw}95X=(8i>cvB8#opRWkG9x@(t}q)X#dH+&>?TW{onuQWoCEIjMwd@m~q-j
zwGn7=d0I|HJ62h!q=x*Zhp4B#8!_s}JGYo*`8*mN;ubMZ#!+2M>2gF28p~|Yvb`<~
z;;tRgiMo-gG!dPFHxZAy!Uw8QyJ$wV$e-fAycF6&pkYI_7FYhni;LCb#HYeZVRT(C
zHhvZ*8Pkdn(@AT7VJ?%jma=IlY4uI}tY<HsRF2|VE1hy2%t<SkdY*kT%{B6?W`^(=
z7?bXyg{%J0Q&M=MH)gN@*2bh9^Mpi2&Ur%lCs+|6vLAs47zSI2hVOtlo*4x3vwfJ_
zz~AVN^VlCjRlg6a`W?`V`faci`8D<(_A?;fsX4=b0=z|(w_|uv8;F3n!F~|m%M608
z&|dbha2n-bfcP5b53n8j1E@B*2l~NHumgMrs=gUet(yVS%1nS=(8D!fC;NdakQr}p
zzJ4<{knyAETZ9^K5PqzkVqH-h&xfq{S$}8!p7k%*Rn{8cq9fM#SRX5`;q}(9**7;q
ZRcYuUQ920gTS6ayI*@Y~2IZF~^B>jzZi4^-

diff --git a/extra/da_vedere b/extra/da_vedere
index 7e9409a..58e59db 100644
--- a/extra/da_vedere
+++ b/extra/da_vedere
@@ -37,3 +37,8 @@ ntohs
 
 reti_readline
 reti_writen
+
+
+
+
+netstat -an -t | grep 9999