json_t *request = json_pack("{s:f s:f s:i s:s}", "lat", lat, "lon", lon, "zoom", zoom, "remote_addr", remote_addr);
if (request == NULL)
fail(400, "Cannot create JSON request");
json_t *request = json_pack("{s:f s:f s:i s:s}", "lat", lat, "lon", lon, "zoom", zoom, "remote_addr", remote_addr);
if (request == NULL)
fail(400, "Cannot create JSON request");