From 42c2279ec57728f821d7b97beab062412c845f5b Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Sun, 14 Jul 2024 18:02:31 +0300
Subject: [PATCH] fixed

---
 plainbin.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/plainbin.c b/plainbin.c
index 34acb1d..f8cfa96 100644
--- a/plainbin.c
+++ b/plainbin.c
@@ -20,11 +20,9 @@
 #define MSG4 "No namespace available.\n"
 
 #ifndef VERSION
-#define VERSION "1.1"
+#define VERSION "1.2"
 #endif
 
-int iport = 8080;
-int oport = 8081;
 size_t max_clients = 15;
 size_t max_size = 1;
 size_t buf_size = 32000;
@@ -50,7 +48,7 @@ enum {
 	SEND
 };
 
-int new_server(const int port) {
+int new_server(const int port, const int backlog) {
 	int listen_fd = socket(AF_INET, SOCK_STREAM, 0);
 	if (listen_fd < 0)
 		return -1;
@@ -75,7 +73,7 @@ int new_server(const int port) {
 	if (bind(listen_fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
 		goto NS_ERROR;
 
-	if (listen(listen_fd, 0) < 0)
+	if (listen(listen_fd, backlog) < 0)
 		goto NS_ERROR;
 
 	return listen_fd;
@@ -355,8 +353,12 @@ int main(int argc, char **argv) {
 	signal(SIGTERM, sig_handler);
 	signal(SIGCHLD, SIG_IGN);
 
+	int backlog = 1;
+	int iport = 8080;
+	int oport = 8081;
+
 	int opt;
-	while ((opt = getopt(argc, argv, "i:o:m:d:s:n:b:t:V")) != -1) {
+	while ((opt = getopt(argc, argv, "i:o:m:d:s:n:b:t:l:V")) != -1) {
 		switch (opt) {
 			case 'i':
 				iport = atoi(optarg);
@@ -395,12 +397,16 @@ int main(int argc, char **argv) {
 				motd = optarg;
 				break;
 
+			case 'l':
+				backlog = atoi(optarg);
+				break;
+
 			case 'V':
 				puts("Version: " VERSION "\nWritten under WTFPL License.");
 				return 0;
 
 			default:
-				printf("%s [iomdsnbtV] - Simple file sharing server\n\t-i NUM Input port\tdefault: %d\n\t-o NUM Output port\tdefault: %d\n\t-m NUM Max clients\tdefault: %zu\n\t-d STR Working dir\tdefault: %s\n\t-s NUM Max file size\tdefault: %zuMB\n\t-n NUM Filename length\tdefault: %zu\n\t-b NUM Buffer size\tdefault: %zuB\n\t-t STR Set MOTD\n\t-V Print version and license\n", prog_name, iport, oport, max_clients, dir, max_size, name_len, buf_size);
+				printf("%s [iomdsnbtlV] - Simple file sharing server\n\t-i NUM Input port\tdefault: %d\n\t-o NUM Output port\tdefault: %d\n\t-m NUM Max clients\tdefault: %zu\n\t-d STR Working dir\tdefault: %s\n\t-s NUM Max file size\tdefault: %zuMB\n\t-n NUM Filename length\tdefault: %zu\n\t-b NUM Buffer size\tdefault: %zuB\n\t-t STR Set MOTD\n\t-l listen() backlog\tdefault: %d\n\t-V Print version and license\n", prog_name, iport, oport, max_clients, dir, max_size, name_len, buf_size, backlog);
 				return 0;
 		}
 	}
@@ -410,13 +416,13 @@ int main(int argc, char **argv) {
 		return 1;
 	}
 
-	ifd = new_server(iport);
+	ifd = new_server(iport, backlog);
 	if (ifd == -1) {
 		fprintf(stderr, "%s: new_server: input socket: %s\n", prog_name, strerror(errno));
 		return 1;
 	}
 
-	ofd = new_server(oport);
+	ofd = new_server(oport, backlog);
 	if (ofd == -1) {
 		fprintf(stderr, "%s: new_server: output socket: %s\n", prog_name, strerror(errno));
 		return 1;
@@ -427,4 +433,6 @@ int main(int argc, char **argv) {
 
 	else
 		Proc(ifd, INPUT);
+
+	return 0;
 }