Server doesn't respond to /meta/ for some ips

[lianke123321]

When connecting to some VPN nodes, server won't return anything when client tried to get meta data. Server should properly handle this even if server failed to look up AS number or AS info.

[lianke123321]

One example: server doesn't respond while connected to this HMA VPN node:

"USA.Texas.Dallas_LOC2S1.TCP":{
  "country_by_vpn_provider":"United States",
  "ip":"174.36.32.185",
  "valid":true,
  "country_match":true,
  "owner":"AS36351 SoftLayer Technologies Inc.",
  "asn":"36351",
  "country_by_ip":"United States"
}