При приглашении друга у него отображается такое
[gameinvite appid="250900" remoteplay="auth=4e2062fda8f4acdccad0591fd524572e&transport=k_EStreamTransportSDR&relay=162.254.198.44:3478&cert=CiAT0Quef06bR5Ax8TtCIfNwCDZHSDZqdDPp76IIPcERYyJiCAESIPPoMH7CY2sAzNL%2FXp5%2Fv7lGW7hlA%2BLfl%2BJl%2BOUYqn%2F4Id1svwkBABABRbzg2WZNvIPcZlDkyBVaCoEB3Wy%2FCQEAEAFiGXN0ZWFtaWQ6NzY1NjExOTgxMjM4MDU5MTcpGzmq9c9Qg7YyQPMsFijo8xOOtQMB9ifqwbq3OBgeoyVwBXJnipwTVySW1zT%2BMylL%2FH099Wb%2BVF1UVc6ydn%2BA9AJLKqdS0bL0lwg"][/gameinvite]