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Merge pull request #492 from safing/feature/improve-location-estimation
Improve location estimation
This commit is contained in:
Daniel
GitHub
commit
f3fcee1adb
2 changed files with 329 additions and 308 deletions
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@ -1,5 +1,7 @@
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package geoip
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const defaultCountryBasedAccuracy = 200
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// FillMissingInfo tries to fill missing location information based on the
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// available existing information.
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func (l *Location) FillMissingInfo() {
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@ -9,253 +11,254 @@ func (l *Location) FillMissingInfo() {
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l.Country.ISOCode != "" {
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if c, ok := countryCoordinates[l.Country.ISOCode]; ok {
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l.Coordinates = c
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l.Coordinates.AccuracyRadius = defaultCountryBasedAccuracy
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}
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}
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}
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var countryCoordinates = map[string]Coordinates{
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"AD": {500, 42, 1},
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"AE": {500, 23, 53},
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"AF": {500, 33, 67},
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"AG": {500, 17, -61},
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"AI": {500, 18, -63},
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"AL": {500, 41, 20},
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"AM": {500, 40, 45},
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"AN": {500, 12, -69},
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"AO": {500, -11, 17},
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"AQ": {500, -75, -0},
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"AR": {500, -38, -63},
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"AS": {500, -14, -170},
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"AT": {500, 47, 14},
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"AU": {500, -25, 133},
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"AW": {500, 12, -69},
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"AZ": {500, 40, 47},
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"BA": {500, 43, 17},
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"BB": {500, 13, -59},
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"BD": {500, 23, 90},
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"BE": {500, 50, 4},
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"BF": {500, 12, -1},
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"BG": {500, 42, 25},
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"BH": {500, 25, 50},
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"BI": {500, -3, 29},
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"BJ": {500, 9, 2},
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"BM": {500, 32, -64},
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"BN": {500, 4, 114},
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"BO": {500, -16, -63},
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"BR": {500, -14, -51},
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"BS": {500, 25, -77},
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"BT": {500, 27, 90},
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"BV": {500, -54, 3},
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"BW": {500, -22, 24},
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"BY": {500, 53, 27},
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"BZ": {500, 17, -88},
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"CA": {500, 56, -106},
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"CC": {500, -12, 96},
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"CD": {500, -4, 21},
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"CF": {500, 6, 20},
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"CG": {500, -0, 15},
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"CH": {500, 46, 8},
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"CI": {500, 7, -5},
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"CK": {500, -21, -159},
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"CL": {500, -35, -71},
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"CM": {500, 7, 12},
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"CN": {500, 35, 104},
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"CO": {500, 4, -74},
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"CR": {500, 9, -83},
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"CU": {500, 21, -77},
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"CV": {500, 16, -24},
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"CX": {500, -10, 105},
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"CY": {500, 35, 33},
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"CZ": {500, 49, 15},
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"DE": {500, 51, 10},
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"DJ": {500, 11, 42},
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"DK": {500, 56, 9},
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"DM": {500, 15, -61},
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"DO": {500, 18, -70},
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"DZ": {500, 28, 1},
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"EC": {500, -1, -78},
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"EE": {500, 58, 25},
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"EG": {500, 26, 30},
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"EH": {500, 24, -12},
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"ER": {500, 15, 39},
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"ES": {500, 40, -3},
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"ET": {500, 9, 40},
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"FI": {500, 61, 25},
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"FJ": {500, -16, 179},
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"FK": {500, -51, -59},
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"FM": {500, 7, 150},
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"FO": {500, 61, -6},
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"FR": {500, 46, 2},
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"GA": {500, -0, 11},
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"GB": {500, 55, -3},
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"GD": {500, 12, -61},
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"GE": {500, 42, 43},
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"GF": {500, 3, -53},
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"GG": {500, 49, -2},
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"GH": {500, 7, -1},
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"GI": {500, 36, -5},
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"GL": {500, 71, -42},
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"GM": {500, 13, -15},
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"GN": {500, 9, -9},
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"GP": {500, 16, -62},
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"GQ": {500, 1, 10},
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"GR": {500, 39, 21},
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"GS": {500, -54, -36},
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"GT": {500, 15, -90},
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"GU": {500, 13, 144},
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"GW": {500, 11, -15},
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"GY": {500, 4, -58},
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"GZ": {500, 31, 34},
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"HK": {500, 22, 114},
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"HM": {500, -53, 73},
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"HN": {500, 15, -86},
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"HR": {500, 45, 15},
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"HT": {500, 18, -72},
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"HU": {500, 47, 19},
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"ID": {500, -0, 113},
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"IE": {500, 53, -8},
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"IL": {500, 31, 34},
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"IM": {500, 54, -4},
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"IN": {500, 20, 78},
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"IO": {500, -6, 71},
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"IQ": {500, 33, 43},
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"IR": {500, 32, 53},
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"IS": {500, 64, -19},
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"IT": {500, 41, 12},
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"JE": {500, 49, -2},
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"JM": {500, 18, -77},
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"JO": {500, 30, 36},
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"JP": {500, 36, 138},
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"KE": {500, -0, 37},
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"KG": {500, 41, 74},
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"KH": {500, 12, 104},
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"KI": {500, -3, -168},
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"KM": {500, -11, 43},
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"KN": {500, 17, -62},
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"KP": {500, 40, 127},
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"KR": {500, 35, 127},
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"KW": {500, 29, 47},
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"KY": {500, 19, -80},
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"KZ": {500, 48, 66},
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"LA": {500, 19, 102},
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"LB": {500, 33, 35},
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"LC": {500, 13, -60},
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"LI": {500, 47, 9},
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"LK": {500, 7, 80},
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"LR": {500, 6, -9},
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"LS": {500, -29, 28},
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"LT": {500, 55, 23},
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"LU": {500, 49, 6},
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"LV": {500, 56, 24},
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"LY": {500, 26, 17},
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"MA": {500, 31, -7},
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"MC": {500, 43, 7},
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"MD": {500, 47, 28},
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"ME": {500, 42, 19},
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"MG": {500, -18, 46},
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"MH": {500, 7, 171},
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"MK": {500, 41, 21},
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"ML": {500, 17, -3},
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"MM": {500, 21, 95},
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"MN": {500, 46, 103},
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"MO": {500, 22, 113},
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"MP": {500, 17, 145},
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"MQ": {500, 14, -61},
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"MR": {500, 21, -10},
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"MS": {500, 16, -62},
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"MT": {500, 35, 14},
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"MU": {500, -20, 57},
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"MV": {500, 3, 73},
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"MW": {500, -13, 34},
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"MX": {500, 23, -102},
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"MY": {500, 4, 101},
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"MZ": {500, -18, 35},
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"NA": {500, -22, 18},
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"NC": {500, -20, 165},
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"NE": {500, 17, 8},
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"NF": {500, -29, 167},
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"NG": {500, 9, 8},
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"NI": {500, 12, -85},
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"NL": {500, 52, 5},
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"NO": {500, 60, 8},
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"NP": {500, 28, 84},
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"NR": {500, -0, 166},
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"NU": {500, -19, -169},
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"NZ": {500, -40, 174},
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"OM": {500, 21, 55},
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"PA": {500, 8, -80},
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"PE": {500, -9, -75},
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"PF": {500, -17, -149},
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"PG": {500, -6, 143},
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"PH": {500, 12, 121},
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"PK": {500, 30, 69},
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"PL": {500, 51, 19},
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"PM": {500, 46, -56},
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"PN": {500, -24, -127},
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"PR": {500, 18, -66},
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"PS": {500, 31, 35},
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"PT": {500, 39, -8},
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"PW": {500, 7, 134},
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"PY": {500, -23, -58},
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"QA": {500, 25, 51},
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"RE": {500, -21, 55},
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"RO": {500, 45, 24},
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"RS": {500, 44, 21},
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"RU": {500, 61, 105},
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"RW": {500, -1, 29},
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"SA": {500, 23, 45},
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"SB": {500, -9, 160},
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"SC": {500, -4, 55},
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"SD": {500, 12, 30},
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"SE": {500, 60, 18},
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"SG": {500, 1, 103},
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"SH": {500, -24, -10},
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"SI": {500, 46, 14},
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"SJ": {500, 77, 23},
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"SK": {500, 48, 19},
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"SL": {500, 8, -11},
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"SM": {500, 43, 12},
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"SN": {500, 14, -14},
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"SO": {500, 5, 46},
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"SR": {500, 3, -56},
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"ST": {500, 0, 6},
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"SV": {500, 13, -88},
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"SY": {500, 34, 38},
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"SZ": {500, -26, 31},
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"TC": {500, 21, -71},
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"TD": {500, 15, 18},
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"TF": {500, -49, 69},
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"TG": {500, 8, 0},
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"TH": {500, 15, 100},
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"TJ": {500, 38, 71},
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"TK": {500, -8, -171},
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"TL": {500, -8, 125},
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"TM": {500, 38, 59},
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"TN": {500, 33, 9},
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"TO": {500, -21, -175},
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"TR": {500, 38, 35},
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"TT": {500, 10, -61},
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"TV": {500, -7, 177},
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"TW": {500, 23, 120},
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"TZ": {500, -6, 34},
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"UA": {500, 48, 31},
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"UG": {500, 1, 32},
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"US": {500, 37, -95},
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"UY": {500, -32, -55},
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"UZ": {500, 41, 64},
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"VA": {500, 41, 12},
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"VC": {500, 12, -61},
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"VE": {500, 6, -66},
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"VG": {500, 18, -64},
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"VI": {500, 18, -64},
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"VN": {500, 14, 108},
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"VU": {500, -15, 166},
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"WF": {500, -13, -177},
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"WS": {500, -13, -172},
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"XK": {500, 42, 20},
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"YE": {500, 15, 48},
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"YT": {500, -12, 45},
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"ZA": {500, -30, 22},
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"ZM": {500, -13, 27},
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"ZW": {500, -19, 29},
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"AD": {Latitude: 42, Longitude: 1},
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"AE": {Latitude: 23, Longitude: 53},
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"AF": {Latitude: 33, Longitude: 67},
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"AG": {Latitude: 17, Longitude: -61},
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"AI": {Latitude: 18, Longitude: -63},
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"AL": {Latitude: 41, Longitude: 20},
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"AM": {Latitude: 40, Longitude: 45},
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"AN": {Latitude: 12, Longitude: -69},
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"AO": {Latitude: -11, Longitude: 17},
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"AQ": {Latitude: -75, Longitude: -0},
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"AR": {Latitude: -38, Longitude: -63},
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"AS": {Latitude: -14, Longitude: -170},
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"AT": {Latitude: 47, Longitude: 14},
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"AU": {Latitude: -25, Longitude: 133},
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"AW": {Latitude: 12, Longitude: -69},
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"AZ": {Latitude: 40, Longitude: 47},
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"BA": {Latitude: 43, Longitude: 17},
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"BB": {Latitude: 13, Longitude: -59},
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"BD": {Latitude: 23, Longitude: 90},
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"BE": {Latitude: 50, Longitude: 4},
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"BF": {Latitude: 12, Longitude: -1},
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"BG": {Latitude: 42, Longitude: 25},
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"BH": {Latitude: 25, Longitude: 50},
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"BI": {Latitude: -3, Longitude: 29},
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"BJ": {Latitude: 9, Longitude: 2},
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"BM": {Latitude: 32, Longitude: -64},
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"BN": {Latitude: 4, Longitude: 114},
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"BO": {Latitude: -16, Longitude: -63},
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"BR": {Latitude: -14, Longitude: -51},
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"BS": {Latitude: 25, Longitude: -77},
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"BT": {Latitude: 27, Longitude: 90},
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"BV": {Latitude: -54, Longitude: 3},
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"BW": {Latitude: -22, Longitude: 24},
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"BY": {Latitude: 53, Longitude: 27},
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"BZ": {Latitude: 17, Longitude: -88},
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"CA": {Latitude: 56, Longitude: -106},
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"CC": {Latitude: -12, Longitude: 96},
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"CD": {Latitude: -4, Longitude: 21},
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"CF": {Latitude: 6, Longitude: 20},
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"CG": {Latitude: -0, Longitude: 15},
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"CH": {Latitude: 46, Longitude: 8},
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"CI": {Latitude: 7, Longitude: -5},
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"CK": {Latitude: -21, Longitude: -159},
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"CL": {Latitude: -35, Longitude: -71},
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"CM": {Latitude: 7, Longitude: 12},
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"CN": {Latitude: 35, Longitude: 104},
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"CO": {Latitude: 4, Longitude: -74},
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"CR": {Latitude: 9, Longitude: -83},
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"CU": {Latitude: 21, Longitude: -77},
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"CV": {Latitude: 16, Longitude: -24},
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"CX": {Latitude: -10, Longitude: 105},
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"CY": {Latitude: 35, Longitude: 33},
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"CZ": {Latitude: 49, Longitude: 15},
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"DE": {Latitude: 51, Longitude: 10},
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"DJ": {Latitude: 11, Longitude: 42},
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"DK": {Latitude: 56, Longitude: 9},
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"DM": {Latitude: 15, Longitude: -61},
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"DO": {Latitude: 18, Longitude: -70},
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"DZ": {Latitude: 28, Longitude: 1},
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"EC": {Latitude: -1, Longitude: -78},
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"EE": {Latitude: 58, Longitude: 25},
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||||
"EG": {Latitude: 26, Longitude: 30},
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"EH": {Latitude: 24, Longitude: -12},
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||||
"ER": {Latitude: 15, Longitude: 39},
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||||
"ES": {Latitude: 40, Longitude: -3},
|
||||
"ET": {Latitude: 9, Longitude: 40},
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||||
"FI": {Latitude: 61, Longitude: 25},
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||||
"FJ": {Latitude: -16, Longitude: 179},
|
||||
"FK": {Latitude: -51, Longitude: -59},
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||||
"FM": {Latitude: 7, Longitude: 150},
|
||||
"FO": {Latitude: 61, Longitude: -6},
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||||
"FR": {Latitude: 46, Longitude: 2},
|
||||
"GA": {Latitude: -0, Longitude: 11},
|
||||
"GB": {Latitude: 55, Longitude: -3},
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||||
"GD": {Latitude: 12, Longitude: -61},
|
||||
"GE": {Latitude: 42, Longitude: 43},
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||||
"GF": {Latitude: 3, Longitude: -53},
|
||||
"GG": {Latitude: 49, Longitude: -2},
|
||||
"GH": {Latitude: 7, Longitude: -1},
|
||||
"GI": {Latitude: 36, Longitude: -5},
|
||||
"GL": {Latitude: 71, Longitude: -42},
|
||||
"GM": {Latitude: 13, Longitude: -15},
|
||||
"GN": {Latitude: 9, Longitude: -9},
|
||||
"GP": {Latitude: 16, Longitude: -62},
|
||||
"GQ": {Latitude: 1, Longitude: 10},
|
||||
"GR": {Latitude: 39, Longitude: 21},
|
||||
"GS": {Latitude: -54, Longitude: -36},
|
||||
"GT": {Latitude: 15, Longitude: -90},
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||||
"GU": {Latitude: 13, Longitude: 144},
|
||||
"GW": {Latitude: 11, Longitude: -15},
|
||||
"GY": {Latitude: 4, Longitude: -58},
|
||||
"GZ": {Latitude: 31, Longitude: 34},
|
||||
"HK": {Latitude: 22, Longitude: 114},
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||||
"HM": {Latitude: -53, Longitude: 73},
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||||
"HN": {Latitude: 15, Longitude: -86},
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||||
"HR": {Latitude: 45, Longitude: 15},
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||||
"HT": {Latitude: 18, Longitude: -72},
|
||||
"HU": {Latitude: 47, Longitude: 19},
|
||||
"ID": {Latitude: -0, Longitude: 113},
|
||||
"IE": {Latitude: 53, Longitude: -8},
|
||||
"IL": {Latitude: 31, Longitude: 34},
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||||
"IM": {Latitude: 54, Longitude: -4},
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||||
"IN": {Latitude: 20, Longitude: 78},
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||||
"IO": {Latitude: -6, Longitude: 71},
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||||
"IQ": {Latitude: 33, Longitude: 43},
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||||
"IR": {Latitude: 32, Longitude: 53},
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||||
"IS": {Latitude: 64, Longitude: -19},
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||||
"IT": {Latitude: 41, Longitude: 12},
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||||
"JE": {Latitude: 49, Longitude: -2},
|
||||
"JM": {Latitude: 18, Longitude: -77},
|
||||
"JO": {Latitude: 30, Longitude: 36},
|
||||
"JP": {Latitude: 36, Longitude: 138},
|
||||
"KE": {Latitude: -0, Longitude: 37},
|
||||
"KG": {Latitude: 41, Longitude: 74},
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||||
"KH": {Latitude: 12, Longitude: 104},
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||||
"KI": {Latitude: -3, Longitude: -168},
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||||
"KM": {Latitude: -11, Longitude: 43},
|
||||
"KN": {Latitude: 17, Longitude: -62},
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||||
"KP": {Latitude: 40, Longitude: 127},
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||||
"KR": {Latitude: 35, Longitude: 127},
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||||
"KW": {Latitude: 29, Longitude: 47},
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||||
"KY": {Latitude: 19, Longitude: -80},
|
||||
"KZ": {Latitude: 48, Longitude: 66},
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||||
"LA": {Latitude: 19, Longitude: 102},
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||||
"LB": {Latitude: 33, Longitude: 35},
|
||||
"LC": {Latitude: 13, Longitude: -60},
|
||||
"LI": {Latitude: 47, Longitude: 9},
|
||||
"LK": {Latitude: 7, Longitude: 80},
|
||||
"LR": {Latitude: 6, Longitude: -9},
|
||||
"LS": {Latitude: -29, Longitude: 28},
|
||||
"LT": {Latitude: 55, Longitude: 23},
|
||||
"LU": {Latitude: 49, Longitude: 6},
|
||||
"LV": {Latitude: 56, Longitude: 24},
|
||||
"LY": {Latitude: 26, Longitude: 17},
|
||||
"MA": {Latitude: 31, Longitude: -7},
|
||||
"MC": {Latitude: 43, Longitude: 7},
|
||||
"MD": {Latitude: 47, Longitude: 28},
|
||||
"ME": {Latitude: 42, Longitude: 19},
|
||||
"MG": {Latitude: -18, Longitude: 46},
|
||||
"MH": {Latitude: 7, Longitude: 171},
|
||||
"MK": {Latitude: 41, Longitude: 21},
|
||||
"ML": {Latitude: 17, Longitude: -3},
|
||||
"MM": {Latitude: 21, Longitude: 95},
|
||||
"MN": {Latitude: 46, Longitude: 103},
|
||||
"MO": {Latitude: 22, Longitude: 113},
|
||||
"MP": {Latitude: 17, Longitude: 145},
|
||||
"MQ": {Latitude: 14, Longitude: -61},
|
||||
"MR": {Latitude: 21, Longitude: -10},
|
||||
"MS": {Latitude: 16, Longitude: -62},
|
||||
"MT": {Latitude: 35, Longitude: 14},
|
||||
"MU": {Latitude: -20, Longitude: 57},
|
||||
"MV": {Latitude: 3, Longitude: 73},
|
||||
"MW": {Latitude: -13, Longitude: 34},
|
||||
"MX": {Latitude: 23, Longitude: -102},
|
||||
"MY": {Latitude: 4, Longitude: 101},
|
||||
"MZ": {Latitude: -18, Longitude: 35},
|
||||
"NA": {Latitude: -22, Longitude: 18},
|
||||
"NC": {Latitude: -20, Longitude: 165},
|
||||
"NE": {Latitude: 17, Longitude: 8},
|
||||
"NF": {Latitude: -29, Longitude: 167},
|
||||
"NG": {Latitude: 9, Longitude: 8},
|
||||
"NI": {Latitude: 12, Longitude: -85},
|
||||
"NL": {Latitude: 52, Longitude: 5},
|
||||
"NO": {Latitude: 60, Longitude: 8},
|
||||
"NP": {Latitude: 28, Longitude: 84},
|
||||
"NR": {Latitude: -0, Longitude: 166},
|
||||
"NU": {Latitude: -19, Longitude: -169},
|
||||
"NZ": {Latitude: -40, Longitude: 174},
|
||||
"OM": {Latitude: 21, Longitude: 55},
|
||||
"PA": {Latitude: 8, Longitude: -80},
|
||||
"PE": {Latitude: -9, Longitude: -75},
|
||||
"PF": {Latitude: -17, Longitude: -149},
|
||||
"PG": {Latitude: -6, Longitude: 143},
|
||||
"PH": {Latitude: 12, Longitude: 121},
|
||||
"PK": {Latitude: 30, Longitude: 69},
|
||||
"PL": {Latitude: 51, Longitude: 19},
|
||||
"PM": {Latitude: 46, Longitude: -56},
|
||||
"PN": {Latitude: -24, Longitude: -127},
|
||||
"PR": {Latitude: 18, Longitude: -66},
|
||||
"PS": {Latitude: 31, Longitude: 35},
|
||||
"PT": {Latitude: 39, Longitude: -8},
|
||||
"PW": {Latitude: 7, Longitude: 134},
|
||||
"PY": {Latitude: -23, Longitude: -58},
|
||||
"QA": {Latitude: 25, Longitude: 51},
|
||||
"RE": {Latitude: -21, Longitude: 55},
|
||||
"RO": {Latitude: 45, Longitude: 24},
|
||||
"RS": {Latitude: 44, Longitude: 21},
|
||||
"RU": {Latitude: 61, Longitude: 105},
|
||||
"RW": {Latitude: -1, Longitude: 29},
|
||||
"SA": {Latitude: 23, Longitude: 45},
|
||||
"SB": {Latitude: -9, Longitude: 160},
|
||||
"SC": {Latitude: -4, Longitude: 55},
|
||||
"SD": {Latitude: 12, Longitude: 30},
|
||||
"SE": {Latitude: 60, Longitude: 18},
|
||||
"SG": {Latitude: 1, Longitude: 103},
|
||||
"SH": {Latitude: -24, Longitude: -10},
|
||||
"SI": {Latitude: 46, Longitude: 14},
|
||||
"SJ": {Latitude: 77, Longitude: 23},
|
||||
"SK": {Latitude: 48, Longitude: 19},
|
||||
"SL": {Latitude: 8, Longitude: -11},
|
||||
"SM": {Latitude: 43, Longitude: 12},
|
||||
"SN": {Latitude: 14, Longitude: -14},
|
||||
"SO": {Latitude: 5, Longitude: 46},
|
||||
"SR": {Latitude: 3, Longitude: -56},
|
||||
"ST": {Latitude: 0, Longitude: 6},
|
||||
"SV": {Latitude: 13, Longitude: -88},
|
||||
"SY": {Latitude: 34, Longitude: 38},
|
||||
"SZ": {Latitude: -26, Longitude: 31},
|
||||
"TC": {Latitude: 21, Longitude: -71},
|
||||
"TD": {Latitude: 15, Longitude: 18},
|
||||
"TF": {Latitude: -49, Longitude: 69},
|
||||
"TG": {Latitude: 8, Longitude: 0},
|
||||
"TH": {Latitude: 15, Longitude: 100},
|
||||
"TJ": {Latitude: 38, Longitude: 71},
|
||||
"TK": {Latitude: -8, Longitude: -171},
|
||||
"TL": {Latitude: -8, Longitude: 125},
|
||||
"TM": {Latitude: 38, Longitude: 59},
|
||||
"TN": {Latitude: 33, Longitude: 9},
|
||||
"TO": {Latitude: -21, Longitude: -175},
|
||||
"TR": {Latitude: 38, Longitude: 35},
|
||||
"TT": {Latitude: 10, Longitude: -61},
|
||||
"TV": {Latitude: -7, Longitude: 177},
|
||||
"TW": {Latitude: 23, Longitude: 120},
|
||||
"TZ": {Latitude: -6, Longitude: 34},
|
||||
"UA": {Latitude: 48, Longitude: 31},
|
||||
"UG": {Latitude: 1, Longitude: 32},
|
||||
"US": {Latitude: 37, Longitude: -95},
|
||||
"UY": {Latitude: -32, Longitude: -55},
|
||||
"UZ": {Latitude: 41, Longitude: 64},
|
||||
"VA": {Latitude: 41, Longitude: 12},
|
||||
"VC": {Latitude: 12, Longitude: -61},
|
||||
"VE": {Latitude: 6, Longitude: -66},
|
||||
"VG": {Latitude: 18, Longitude: -64},
|
||||
"VI": {Latitude: 18, Longitude: -64},
|
||||
"VN": {Latitude: 14, Longitude: 108},
|
||||
"VU": {Latitude: -15, Longitude: 166},
|
||||
"WF": {Latitude: -13, Longitude: -177},
|
||||
"WS": {Latitude: -13, Longitude: -172},
|
||||
"XK": {Latitude: 42, Longitude: 20},
|
||||
"YE": {Latitude: 15, Longitude: 48},
|
||||
"YT": {Latitude: -12, Longitude: 45},
|
||||
"ZA": {Latitude: -30, Longitude: 22},
|
||||
"ZM": {Latitude: -13, Longitude: 27},
|
||||
"ZW": {Latitude: -19, Longitude: 29},
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,7 +8,8 @@ import (
|
|||
)
|
||||
|
||||
const (
|
||||
earthCircumferenceInKm float64 = 40100 // earth circumference in km
|
||||
earthCircumferenceInKm = 40100 // earth circumference in km
|
||||
defaultLocationAccuracy = 100
|
||||
)
|
||||
|
||||
// Location holds information regarding the geographical and network location of an IP address.
|
||||
|
|
@ -30,52 +31,75 @@ type Coordinates struct {
|
|||
Longitude float64 `maxminddb:"longitude"`
|
||||
}
|
||||
|
||||
/*
|
||||
Location Estimation
|
||||
|
||||
Distance Value
|
||||
|
||||
- 0: Other side of the Internet.
|
||||
- 100: Very near, up to same network / datacenter.
|
||||
|
||||
Weighting Goal
|
||||
|
||||
- Exposure to different networks shall be limited as much as possible.
|
||||
- A single network should not see a connection over a large distance.
|
||||
- Latency should be low.
|
||||
|
||||
Weighting Intentions
|
||||
|
||||
- Being on the same continent is better than being in the same AS.
|
||||
- Being in the same country is better than having low coordinate distance.
|
||||
- Coordinate distance is only a tie breaker, as accuracy varies heavily.
|
||||
- Same AS with lower coordinate distance beats being on the same continent.
|
||||
|
||||
Weighting Configuration
|
||||
*/
|
||||
|
||||
const (
|
||||
weightContinentMatch = 25
|
||||
weightCountryMatch = 20
|
||||
weightASOrgMatch = 15
|
||||
weightASNMatch = 10
|
||||
weightCoordinateDistance = 30
|
||||
)
|
||||
|
||||
/*
|
||||
About the Accuracy Radius
|
||||
|
||||
- Range: 1-1000
|
||||
- Seen values (estimation): 1,5,10,20,50,100,200,500,1000
|
||||
- The default seems to be 100.
|
||||
|
||||
Cxamples
|
||||
|
||||
- 1.1.1/24 has 1000: Anycast
|
||||
- 8.8.0/19 has 1000: Anycast
|
||||
- 8.8.52/22 has 1: City of Westfield
|
||||
|
||||
Conclusion
|
||||
|
||||
- Ignore or penalize high accuracy radius.
|
||||
*/
|
||||
|
||||
// EstimateNetworkProximity aims to calculate the distance between two network locations. Returns a proximity value between 0 (far away) and 100 (nearby).
|
||||
func (l *Location) EstimateNetworkProximity(to *Location) (proximity int) {
|
||||
/*
|
||||
Distance Value
|
||||
|
||||
- 0: Other side of the Internet.
|
||||
- 100: Very near, up to same network / datacenter.
|
||||
|
||||
Weighting Goal
|
||||
|
||||
- Exposure to different networks shall be limited as much as possible.
|
||||
- A single network should not see a connection over a large distance.
|
||||
- Latency should be low.
|
||||
|
||||
Weighting Intentions
|
||||
|
||||
- Being on the same continent is better than being in the same AS.
|
||||
- Being in the same country is better than having low coordinate distance.
|
||||
- Coordinate distance is only a tie breaker, as accuracy varies heavily.
|
||||
- Same AS with lower coordinate distance beats being on the same continent.
|
||||
|
||||
Weighting Configuration
|
||||
|
||||
- Continent match: 30
|
||||
- Country match: 25
|
||||
- ASOrg match: 20
|
||||
- ASN match: 15
|
||||
- Coordinate distance: 0-10
|
||||
*/
|
||||
|
||||
if l.Continent.Code != "" &&
|
||||
l.Continent.Code == to.Continent.Code {
|
||||
proximity += 30
|
||||
if l.Country.ISOCode != "" &&
|
||||
l.Country.ISOCode == to.Country.ISOCode {
|
||||
proximity += 25
|
||||
}
|
||||
func (l *Location) EstimateNetworkProximity(to *Location) (proximity float32) {
|
||||
switch {
|
||||
case l.Country.ISOCode != "" && l.Country.ISOCode == to.Country.ISOCode:
|
||||
// Rely more on the Country Code data, as it is more accurate than the
|
||||
// Continent Code, especially when combining location data from multiple
|
||||
// sources.
|
||||
proximity += weightContinentMatch + weightCountryMatch
|
||||
case l.Continent.Code != "" && l.Continent.Code == to.Continent.Code:
|
||||
proximity += weightContinentMatch
|
||||
}
|
||||
|
||||
if l.AutonomousSystemOrganization != "" &&
|
||||
l.AutonomousSystemOrganization == to.AutonomousSystemOrganization {
|
||||
proximity += 20
|
||||
if l.AutonomousSystemNumber != 0 &&
|
||||
l.AutonomousSystemNumber == to.AutonomousSystemNumber {
|
||||
proximity += 15
|
||||
}
|
||||
switch {
|
||||
case l.AutonomousSystemNumber != 0 && l.AutonomousSystemNumber == to.AutonomousSystemNumber:
|
||||
// Rely more on the ASN data, as it is more accurate than the ASOrg data,
|
||||
// especially when combining location data from multiple sources.
|
||||
proximity += weightASOrgMatch + weightASNMatch
|
||||
case l.AutonomousSystemOrganization != "" && l.AutonomousSystemOrganization == to.AutonomousSystemOrganization:
|
||||
proximity += weightASOrgMatch
|
||||
}
|
||||
|
||||
// Check coordinates and adjust accuracy value.
|
||||
|
|
@ -91,23 +115,10 @@ func (l *Location) EstimateNetworkProximity(to *Location) (proximity int) {
|
|||
accuracy = to.Coordinates.AccuracyRadius
|
||||
}
|
||||
|
||||
/*
|
||||
About the Accuracy Radius
|
||||
|
||||
- Range: 1-1000
|
||||
- Seen values (estimation): 1,5,10,20,50,100,200,500,1000
|
||||
- The default seems to be 100.
|
||||
|
||||
Cxamples
|
||||
|
||||
- 1.1.1/24 has 1000: Anycast
|
||||
- 8.8.0/19 has 1000: Anycast
|
||||
- 8.8.52/22 has 1: City of Westfield
|
||||
|
||||
Conclusion
|
||||
|
||||
- Ignore or penalize high accuracy radius.
|
||||
*/
|
||||
// Apply the default location accuracy if there is none.
|
||||
if accuracy == 0 {
|
||||
accuracy = defaultLocationAccuracy
|
||||
}
|
||||
|
||||
// Calculate coordinate distance in kilometers.
|
||||
fromCoords := haversine.Coord{Lat: l.Coordinates.Latitude, Lon: l.Coordinates.Longitude}
|
||||
|
|
@ -116,14 +127,21 @@ func (l *Location) EstimateNetworkProximity(to *Location) (proximity int) {
|
|||
|
||||
if km <= 50 && accuracy <= 100 {
|
||||
// Give a flat out ten for highly accurate coordinates within 50km.
|
||||
proximity += 10
|
||||
proximity += weightCoordinateDistance
|
||||
} else {
|
||||
// Else, take a percentage.
|
||||
distanceInPercent := (earthCircumferenceInKm - km) * 100 / earthCircumferenceInKm
|
||||
proximityInPercent := (earthCircumferenceInKm - km) / earthCircumferenceInKm
|
||||
|
||||
// Apply penalty for locations with low accuracy (targeting accuracy radius >100).
|
||||
// Take away at most 50% of the weight through inaccuracy.
|
||||
accuracyModifier := 1 - float64(accuracy)/2000
|
||||
proximity += int(distanceInPercent * 0.10 * accuracyModifier)
|
||||
|
||||
// Add proximiy weight.
|
||||
proximity += float32(
|
||||
weightCoordinateDistance * // Maxmimum weight for this data point.
|
||||
proximityInPercent * // Range: 0-1
|
||||
accuracyModifier, // Range: 0.5-1
|
||||
)
|
||||
}
|
||||
|
||||
return proximity
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue