cloudflare/cloudflared
Publicmirrored from https://github.com/cloudflare/cloudflaredAvailable
edgediscovery/edgediscovery_test.go
167lines · modecode
| 1 | package edgediscovery |
| 2 | |
| 3 | import ( |
| 4 | "net" |
| 5 | "testing" |
| 6 | |
| 7 | "github.com/rs/zerolog" |
| 8 | "github.com/stretchr/testify/assert" |
| 9 | ) |
| 10 | |
| 11 | var ( |
| 12 | addr0 = net.TCPAddr{ |
| 13 | IP: net.ParseIP("123.0.0.0"), |
| 14 | Port: 8000, |
| 15 | Zone: "", |
| 16 | } |
| 17 | addr1 = net.TCPAddr{ |
| 18 | IP: net.ParseIP("123.0.0.1"), |
| 19 | Port: 8000, |
| 20 | Zone: "", |
| 21 | } |
| 22 | addr2 = net.TCPAddr{ |
| 23 | IP: net.ParseIP("123.0.0.2"), |
| 24 | Port: 8000, |
| 25 | Zone: "", |
| 26 | } |
| 27 | addr3 = net.TCPAddr{ |
| 28 | IP: net.ParseIP("123.0.0.3"), |
| 29 | Port: 8000, |
| 30 | Zone: "", |
| 31 | } |
| 32 | |
| 33 | log = zerolog.Nop() |
| 34 | ) |
| 35 | |
| 36 | func TestGiveBack(t *testing.T) { |
| 37 | edge := MockEdge(&log, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3}) |
| 38 | |
| 39 | // Give this connection an address |
| 40 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 41 | const connID = 0 |
| 42 | addr, err := edge.GetAddr(connID) |
| 43 | assert.NoError(t, err) |
| 44 | assert.NotNil(t, addr) |
| 45 | assert.Equal(t, 3, edge.AvailableAddrs()) |
| 46 | |
| 47 | // Get it back |
| 48 | edge.GiveBack(addr) |
| 49 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 50 | } |
| 51 | |
| 52 | func TestRPCAndProxyShareSingleEdgeIP(t *testing.T) { |
| 53 | // Make an edge with a single IP |
| 54 | edge := MockEdge(&log, []*net.TCPAddr{&addr0}) |
| 55 | tunnelConnID := 0 |
| 56 | |
| 57 | // Use the IP for a tunnel |
| 58 | addrTunnel, err := edge.GetAddr(tunnelConnID) |
| 59 | assert.NoError(t, err) |
| 60 | |
| 61 | // Ensure the IP can be used for RPC too |
| 62 | addrRPC, err := edge.GetAddrForRPC() |
| 63 | assert.NoError(t, err) |
| 64 | assert.Equal(t, addrTunnel, addrRPC) |
| 65 | } |
| 66 | |
| 67 | func TestGetAddrForRPC(t *testing.T) { |
| 68 | edge := MockEdge(&log, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3}) |
| 69 | |
| 70 | // Get a connection |
| 71 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 72 | addr, err := edge.GetAddrForRPC() |
| 73 | assert.NoError(t, err) |
| 74 | assert.NotNil(t, addr) |
| 75 | |
| 76 | // Using an address for RPC shouldn't consume it |
| 77 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 78 | |
| 79 | // Get it back |
| 80 | edge.GiveBack(addr) |
| 81 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 82 | } |
| 83 | |
| 84 | func TestOnePerRegion(t *testing.T) { |
| 85 | // Make an edge with only one address |
| 86 | edge := MockEdge(&log, []*net.TCPAddr{&addr0, &addr1}) |
| 87 | |
| 88 | // Use the only address |
| 89 | const connID = 0 |
| 90 | a1, err := edge.GetAddr(connID) |
| 91 | assert.NoError(t, err) |
| 92 | assert.NotNil(t, a1) |
| 93 | |
| 94 | // if the first address is bad, get the second one |
| 95 | a2, err := edge.GetDifferentAddr(connID) |
| 96 | assert.NoError(t, err) |
| 97 | assert.NotNil(t, a2) |
| 98 | assert.NotEqual(t, a1, a2) |
| 99 | |
| 100 | // now that second one is bad, get the first one again |
| 101 | a3, err := edge.GetDifferentAddr(connID) |
| 102 | assert.NoError(t, err) |
| 103 | assert.Equal(t, a1, a3) |
| 104 | } |
| 105 | |
| 106 | func TestOnlyOneAddrLeft(t *testing.T) { |
| 107 | // Make an edge with only one address |
| 108 | edge := MockEdge(&log, []*net.TCPAddr{&addr0}) |
| 109 | |
| 110 | // Use the only address |
| 111 | const connID = 0 |
| 112 | addr, err := edge.GetAddr(connID) |
| 113 | assert.NoError(t, err) |
| 114 | assert.NotNil(t, addr) |
| 115 | |
| 116 | // If that edge address is "bad", there's no alternative address. |
| 117 | _, err = edge.GetDifferentAddr(connID) |
| 118 | assert.Error(t, err) |
| 119 | |
| 120 | // previously bad address should become available again on next iteration. |
| 121 | addr, err = edge.GetDifferentAddr(connID) |
| 122 | assert.NoError(t, err) |
| 123 | assert.NotNil(t, addr) |
| 124 | } |
| 125 | |
| 126 | func TestNoAddrsLeft(t *testing.T) { |
| 127 | // Make an edge with no addresses |
| 128 | edge := MockEdge(&log, []*net.TCPAddr{}) |
| 129 | |
| 130 | _, err := edge.GetAddr(2) |
| 131 | assert.Error(t, err) |
| 132 | _, err = edge.GetAddrForRPC() |
| 133 | assert.Error(t, err) |
| 134 | } |
| 135 | |
| 136 | func TestGetAddr(t *testing.T) { |
| 137 | edge := MockEdge(&log, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3}) |
| 138 | |
| 139 | // Give this connection an address |
| 140 | const connID = 0 |
| 141 | addr, err := edge.GetAddr(connID) |
| 142 | assert.NoError(t, err) |
| 143 | assert.NotNil(t, addr) |
| 144 | |
| 145 | // If the same connection requests another address, it should get the same one. |
| 146 | addr2, err := edge.GetAddr(connID) |
| 147 | assert.NoError(t, err) |
| 148 | assert.Equal(t, addr, addr2) |
| 149 | } |
| 150 | |
| 151 | func TestGetDifferentAddr(t *testing.T) { |
| 152 | edge := MockEdge(&log, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3}) |
| 153 | |
| 154 | // Give this connection an address |
| 155 | assert.Equal(t, 4, edge.AvailableAddrs()) |
| 156 | const connID = 0 |
| 157 | addr, err := edge.GetAddr(connID) |
| 158 | assert.NoError(t, err) |
| 159 | assert.NotNil(t, addr) |
| 160 | assert.Equal(t, 3, edge.AvailableAddrs()) |
| 161 | |
| 162 | // If the same connection requests another address, it should get the same one. |
| 163 | addr2, err := edge.GetDifferentAddr(connID) |
| 164 | assert.NoError(t, err) |
| 165 | assert.NotEqual(t, addr, addr2) |
| 166 | assert.Equal(t, 3, edge.AvailableAddrs()) |
| 167 | } |
| 168 | |