175 lines
5.7 KiB
Go
175 lines
5.7 KiB
Go
// Copyright 2013, Cong Ding. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Author: Cong Ding <dinggnu@gmail.com>
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package stun
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// Default server address and client name.
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const (
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DefaultServerAddr = "stun.ekiga.net:3478"
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DefaultSoftwareName = "StunClient"
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)
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const (
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magicCookie = 0x2112A442
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fingerprint = 0x5354554e
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)
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// NATType is the type of NAT described by int.
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type NATType int
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// NAT types.
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const (
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NATError NATType = iota
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NATUnknown
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NATNone
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NATBlocked
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NATFull
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NATSymmetric
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NATRestricted
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NATPortRestricted
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NATSymmetricUDPFirewall
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)
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var natStr map[NATType]string
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func init() {
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natStr = map[NATType]string{
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NATError: "Test failed",
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NATUnknown: "Unexpected response from the STUN server",
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NATBlocked: "UDP is blocked",
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NATFull: "Full cone NAT",
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NATSymmetric: "Symmetric NAT",
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NATRestricted: "Restricted NAT",
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NATPortRestricted: "Port restricted NAT",
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NATNone: "Not behind a NAT",
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NATSymmetricUDPFirewall: "Symmetric UDP firewall",
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}
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}
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func (nat NATType) String() string {
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if s, ok := natStr[nat]; ok {
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return s
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}
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return "Unknown"
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}
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const (
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errorTryAlternate = 300
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errorBadRequest = 400
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errorUnauthorized = 401
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errorUnassigned402 = 402
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errorForbidden = 403
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errorUnknownAttribute = 420
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errorAllocationMismatch = 437
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errorStaleNonce = 438
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errorUnassigned439 = 439
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errorAddressFamilyNotSupported = 440
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errorWrongCredentials = 441
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errorUnsupportedTransportProtocol = 442
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errorPeerAddressFamilyMismatch = 443
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errorConnectionAlreadyExists = 446
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errorConnectionTimeoutOrFailure = 447
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errorAllocationQuotaReached = 486
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errorRoleConflict = 487
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errorServerError = 500
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errorInsufficientCapacity = 508
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)
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const (
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attributeFamilyIPv4 = 0x01
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attributeFamilyIPV6 = 0x02
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)
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const (
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attributeMappedAddress = 0x0001
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attributeResponseAddress = 0x0002
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attributeChangeRequest = 0x0003
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attributeSourceAddress = 0x0004
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attributeChangedAddress = 0x0005
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attributeUsername = 0x0006
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attributePassword = 0x0007
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attributeMessageIntegrity = 0x0008
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attributeErrorCode = 0x0009
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attributeUnknownAttributes = 0x000a
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attributeReflectedFrom = 0x000b
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attributeChannelNumber = 0x000c
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attributeLifetime = 0x000d
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attributeBandwidth = 0x0010
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attributeXorPeerAddress = 0x0012
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attributeData = 0x0013
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attributeRealm = 0x0014
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attributeNonce = 0x0015
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attributeXorRelayedAddress = 0x0016
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attributeRequestedAddressFamily = 0x0017
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attributeEvenPort = 0x0018
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attributeRequestedTransport = 0x0019
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attributeDontFragment = 0x001a
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attributeXorMappedAddress = 0x0020
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attributeTimerVal = 0x0021
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attributeReservationToken = 0x0022
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attributePriority = 0x0024
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attributeUseCandidate = 0x0025
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attributePadding = 0x0026
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attributeResponsePort = 0x0027
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attributeConnectionID = 0x002a
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attributeXorMappedAddressExp = 0x8020
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attributeSoftware = 0x8022
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attributeAlternateServer = 0x8023
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attributeCacheTimeout = 0x8027
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attributeFingerprint = 0x8028
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attributeIceControlled = 0x8029
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attributeIceControlling = 0x802a
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attributeResponseOrigin = 0x802b
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attributeOtherAddress = 0x802c
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attributeEcnCheckStun = 0x802d
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attributeCiscoFlowdata = 0xc000
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)
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const (
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typeBindingRequest = 0x0001
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typeBindingResponse = 0x0101
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typeBindingErrorResponse = 0x0111
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typeSharedSecretRequest = 0x0002
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typeSharedSecretResponse = 0x0102
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typeSharedErrorResponse = 0x0112
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typeAllocate = 0x0003
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typeAllocateResponse = 0x0103
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typeAllocateErrorResponse = 0x0113
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typeRefresh = 0x0004
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typeRefreshResponse = 0x0104
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typeRefreshErrorResponse = 0x0114
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typeSend = 0x0006
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typeSendResponse = 0x0106
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typeSendErrorResponse = 0x0116
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typeData = 0x0007
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typeDataResponse = 0x0107
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typeDataErrorResponse = 0x0117
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typeCreatePermisiion = 0x0008
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typeCreatePermisiionResponse = 0x0108
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typeCreatePermisiionErrorResponse = 0x0118
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typeChannelBinding = 0x0009
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typeChannelBindingResponse = 0x0109
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typeChannelBindingErrorResponse = 0x0119
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typeConnect = 0x000a
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typeConnectResponse = 0x010a
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typeConnectErrorResponse = 0x011a
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typeConnectionBind = 0x000b
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typeConnectionBindResponse = 0x010b
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typeConnectionBindErrorResponse = 0x011b
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typeConnectionAttempt = 0x000c
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typeConnectionAttemptResponse = 0x010c
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typeConnectionAttemptErrorResponse = 0x011c
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)
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