https://src.fedoraproject.org/rpms/lrzsz/blob/c23247c9c7604aec31d49ed1b238622835f575e2/f/lrzsz-socklen.patch

Use socklen_t as the length of the socket address (which is a bit of
an anachronism, considering the rest of the sources).  The previous
code des not work on 64-bit big-endian architectures.

--- a/src/tcp.c
+++ b/src/tcp.c
@@ -56,7 +56,7 @@ tcp_server (char *buf)
 	struct sockaddr_in s;
 	struct sockaddr_in t;
 	int on=1;
-	size_t len;
+	socklen_t len;
 
 	if ((sock = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
 		error(1,errno,"socket");
@@ -91,7 +91,7 @@ tcp_accept (int d)
 {
 	int so;
 	struct  sockaddr_in s;
-	size_t namelen;
+	socklen_t namelen;
 	int num=0;
 
 	namelen = sizeof(s);