ESP8266WebServer cookie save problem

[blh64]

@phvg

server.sendHeader("Set-Cookie", "Set-Cookie: cookiename=cookiecontent;expires=31536000;");

You've got one too many "Set-Cookie" in there and you don't need to trailing semi-colon.

server.sendHeader("Set-Cookie", "cookiename=cookiecontent;expires=31536000");