Error when authenticating!

[aagontuk]

Every time after running $ grive -a and copy; pasting authentication code, following error was thrown

exception: /build/grive2-arRs3e/grive2-0.4.0/libgrive/src/http/CurlAgent.cc(196): Throw in function long int gr::http::CurlAgent::ExecCurl(const string&, gr::DataStream*, const gr::http::Header&)
Dynamic exception type: boost::exception_detail::clone_impl<gr::http::Error>
[gr::expt::BacktraceTag*] = #0 0x4739c0 grive gr::Exception::Exception()
#1 0x452724 grive gr::http::CurlAgent::ExecCurl(std::string const&, gr::DataStream*, gr::http::Header const&)
#2 0x452c32 grive gr::http::CurlAgent::Post(std::string const&, std::string const&, gr::DataStream*, gr::http::Header const&)
#3 0x457829 grive gr::OAuth2::Auth(std::string const&)
#4 0x42de42 grive Main(int, char**)
#5 0x42c1fb grive main
#6 0x7f68b9fe4ec5 /lib/x86_64-linux-gnu/libc.so.6 __libc_start_main
#7 0x42cd74 grive 

[gr::http::CurlCodeTag*] = 7
[gr::http::CurlErrMsgTag*] = Failed to connect to accounts.google.com port 443: No route to host
[gr::http::RequestHeadersTag*] = 
[gr::http::UrlTag*] = https://accounts.google.com/o/oauth2/token

What is the problem?

[vitalif]

"Failed to connect to accounts.google.com port 443: No route to host" probably means you had some kind of network connectivity error.