add -naccept <n> option to s_server to automatically exit after <n> connections

apps/s_apps.h

@@ -148,7 +148,7 @@ typedef fd_mask fd_set;
 #define PORT_STR        "4433"
 #define PROTOCOL        "tcp"
 
-int do_server(int port, int type, int *ret, int (*cb) (char *hostname, int s, unsigned char *context), unsigned char *context);
+int do_server(int port, int type, int *ret, int (*cb) (char *hostname, int s, unsigned char *context), unsigned char *context, int naccept);
 #ifdef HEADER_X509_H
 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
 #endif

apps/s_cb.c

@@ -454,13 +454,13 @@ int ssl_print_curves(BIO *out, SSL *s, int noshared)
 		}
 	if (ncurves == 0)
 		BIO_puts(out, "NONE");
+	OPENSSL_free(curves);
 	if (noshared)
 		{
 		BIO_puts(out, "\n");
 		return 1;
 		}
 	BIO_puts(out, "\nShared Elliptic curves: ");
-	OPENSSL_free(curves);
 	ncurves = SSL_get_shared_curve(s, -1);
 	for (i = 0; i < ncurves; i++)
 		{

apps/s_server.c

@@ -979,7 +979,7 @@ int MAIN(int argc, char *argv[])
 	STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
 	EVP_PKEY *s_key = NULL, *s_dkey = NULL;
 	int no_cache = 0, ext_cache = 0;
-	int rev = 0;
+	int rev = 0, naccept = -1;
 #ifndef OPENSSL_NO_TLSEXT
 	EVP_PKEY *s_key2 = NULL;
 	X509 *s_cert2 = NULL;
@@ -1040,6 +1040,17 @@ int MAIN(int argc, char *argv[])
 			if (!extract_port(*(++argv),&port))
 				goto bad;
 			}
+		else if	(strcmp(*argv,"-naccept") == 0)
+			{
+			if (--argc < 1) goto bad;
+			naccept = atol(*(++argv));
+			if (naccept <= 0)
+				{
+				BIO_printf(bio_err, "bad accept value %s\n",
+							*argv);
+				goto bad;
+				}
+			}
 		else if	(strcmp(*argv,"-verify") == 0)
 			{
 			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
@@ -2000,11 +2011,11 @@ bad:
 	BIO_printf(bio_s_out,"ACCEPT\n");
 	(void)BIO_flush(bio_s_out);
 	if (rev)
-		do_server(port,socket_type,&accept_socket,rev_body, context);
+		do_server(port,socket_type,&accept_socket,rev_body, context, naccept);
 	else if (www)
-		do_server(port,socket_type,&accept_socket,www_body, context);
+		do_server(port,socket_type,&accept_socket,www_body, context, naccept);
 	else
-		do_server(port,socket_type,&accept_socket,sv_body, context);
+		do_server(port,socket_type,&accept_socket,sv_body, context, naccept);
 	print_stats(bio_s_out,ctx);
 	ret=0;
 end:

apps/s_socket.c

@@ -280,7 +280,7 @@ static int init_client_ip(int *sock, const unsigned char ip[4], int port,
 	return(1);
 	}
 
-int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context)
+int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context, int naccept)
 	{
 	int sock;
 	char *name = NULL;
@@ -310,7 +310,9 @@ int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, uns
 		if (name != NULL) OPENSSL_free(name);
 		if (type==SOCK_STREAM)
 			SHUTDOWN2(sock);
-		if (i < 0)
+		if (naccept != -1)
+			naccept--;
+		if (i < 0 || naccept == 0)
 			{
 			SHUTDOWN2(accept_socket);
 			return(i);