5359edc160de518d8e43fdd3448365c15b912c3c
galt
  Mon Jul 22 11:48:10 2019 -0700
Added ipv6 support. Listening processes us hybrid dual stack feature of OS to simplify implementation and use a single listening socket. Works with both TCP and UDP. Parasol working. geoIp also updated and ready for IPv6. Should be invisible to most users, while providing connections via ipv6 where available. Supports both ipv4 and ipv6.

diff --git src/htslib/knetfile.c src/htslib/knetfile.c
index 7749aac..4ec04fc 100644
--- src/htslib/knetfile.c
+++ src/htslib/knetfile.c
@@ -186,30 +186,35 @@
 	if (setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&lng, sizeof(lng)) == -1) __err_connect("setsockopt");
 	// get host info
 	if (isalpha(host[0])) hp = gethostbyname(host);
 	else {
 		struct in_addr addr;
 		addr.s_addr = inet_addr(host);
 		hp = gethostbyaddr((char*)&addr, 4, AF_INET);
 	}
 	if (hp == 0) __err_connect("gethost");
 	// connect
 	server.sin_addr.s_addr = *((unsigned long*)hp->h_addr);
 	server.sin_family= AF_INET;
 	server.sin_port = htons(atoi(port));
 	if (connect(fd, (struct sockaddr*)&server, sizeof(server)) != 0) __err_connect("connect");
 	// freehostent(hp); // strangely in MSDN, hp is NOT freed (memory leak?!)
+
+	/* FOR CODE TO CONNECT SUPPORTING IPV6 and IPV4 using our net.c:
+	fd = netConnect(host, port);
+	*/
+
 	return fd;
 }
 #endif
 
 static off_t my_netread(int fd, void *buf, off_t len)
 {
 	off_t rest = len, curr, l = 0;
 	/* recv() and read() may not read the required length of data with
 	 * one call. They have to be called repeatedly. */
 	while (rest) {
 		if (socket_wait(fd, 1) <= 0) break; // socket is not ready for reading
 		curr = netread(fd, (void*)((char*)buf + l), rest);
 		/* According to the glibc manual, section 13.2, a zero returned
 		 * value indicates end-of-file (EOF), which should mean that
 		 * read() will not return zero if EOF has not been met but data