satisfy this requirement:
"[program] is based in part on the work of the libwebsockets project
-(http://libwebsockets.org)"
+(https://libwebsockets.org)"
+
+3) Some sources included have their own, more liberal licenses, or options
+to get original sources with the liberal terms.
+
+Original liberal license retained
+
+ - lib/sha-1.c - 3-clause BSD license retained, link to original
+ - win32port/zlib - ZLIB license (see zlib.h)
+
+Relicensed to libwebsocket license
+
+ - lib/base64-decode.c - relicensed to LGPL2.1+SLE, link to original
+ - lib/daemonize.c - relicensed from Public Domain to LGPL2.1+SLE,
+ link to original Public Domain version
+
+Public Domain (CC-zero) to simplify reuse
+
+ - test-server/*.c
+ - test-server/*.h
+
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999