pod install MobileVLCKit failure
environment:Xcode-9.2 ,macOS-10.14 ,cocoapods-1.6.1 ,gem source - (https://gems.ruby-china.com/),MobileVLCKit version-3.3.1, install result: [!] Error installing MobileVLCKit [!] /usr/bin/curl -f -L -o /var/folders/wt/k9fvc59n7cb0ldh1y74q5nmw0000gn/T/d20190419-2296-1s7hv3r/file.txz https://download.videolan.org/pub/cocoapods/prod/MobileVLCKit-3.3.1-3387892-12ce8cd7f6.tar.xz --create-dirs --netrc-optional --retry 2
% Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 57 287M 57 164M 0 0 183k 0 0:26:44 0:15:16 0:11:28 0 curl: (56) LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54