github.com/quic-go/quic-go@v0.44.0/config.go (about) 1 package quic 2 3 import ( 4 "fmt" 5 "time" 6 7 "github.com/quic-go/quic-go/internal/protocol" 8 "github.com/quic-go/quic-go/quicvarint" 9 ) 10 11 // Clone clones a Config 12 func (c *Config) Clone() *Config { 13 copy := *c 14 return © 15 } 16 17 func (c *Config) handshakeTimeout() time.Duration { 18 return 2 * c.HandshakeIdleTimeout 19 } 20 21 func (c *Config) maxRetryTokenAge() time.Duration { 22 return c.handshakeTimeout() 23 } 24 25 func validateConfig(config *Config) error { 26 if config == nil { 27 return nil 28 } 29 const maxStreams = 1 << 60 30 if config.MaxIncomingStreams > maxStreams { 31 config.MaxIncomingStreams = maxStreams 32 } 33 if config.MaxIncomingUniStreams > maxStreams { 34 config.MaxIncomingUniStreams = maxStreams 35 } 36 if config.MaxStreamReceiveWindow > quicvarint.Max { 37 config.MaxStreamReceiveWindow = quicvarint.Max 38 } 39 if config.MaxConnectionReceiveWindow > quicvarint.Max { 40 config.MaxConnectionReceiveWindow = quicvarint.Max 41 } 42 if config.InitialPacketSize > 0 && config.InitialPacketSize < protocol.MinInitialPacketSize { 43 config.InitialPacketSize = protocol.MinInitialPacketSize 44 } 45 if config.InitialPacketSize > protocol.MaxPacketBufferSize { 46 config.InitialPacketSize = protocol.MaxPacketBufferSize 47 } 48 // check that all QUIC versions are actually supported 49 for _, v := range config.Versions { 50 if !protocol.IsValidVersion(v) { 51 return fmt.Errorf("invalid QUIC version: %s", v) 52 } 53 } 54 return nil 55 } 56 57 // populateConfig populates fields in the quic.Config with their default values, if none are set 58 // it may be called with nil 59 func populateConfig(config *Config) *Config { 60 if config == nil { 61 config = &Config{} 62 } 63 versions := config.Versions 64 if len(versions) == 0 { 65 versions = protocol.SupportedVersions 66 } 67 handshakeIdleTimeout := protocol.DefaultHandshakeIdleTimeout 68 if config.HandshakeIdleTimeout != 0 { 69 handshakeIdleTimeout = config.HandshakeIdleTimeout 70 } 71 idleTimeout := protocol.DefaultIdleTimeout 72 if config.MaxIdleTimeout != 0 { 73 idleTimeout = config.MaxIdleTimeout 74 } 75 initialStreamReceiveWindow := config.InitialStreamReceiveWindow 76 if initialStreamReceiveWindow == 0 { 77 initialStreamReceiveWindow = protocol.DefaultInitialMaxStreamData 78 } 79 maxStreamReceiveWindow := config.MaxStreamReceiveWindow 80 if maxStreamReceiveWindow == 0 { 81 maxStreamReceiveWindow = protocol.DefaultMaxReceiveStreamFlowControlWindow 82 } 83 initialConnectionReceiveWindow := config.InitialConnectionReceiveWindow 84 if initialConnectionReceiveWindow == 0 { 85 initialConnectionReceiveWindow = protocol.DefaultInitialMaxData 86 } 87 maxConnectionReceiveWindow := config.MaxConnectionReceiveWindow 88 if maxConnectionReceiveWindow == 0 { 89 maxConnectionReceiveWindow = protocol.DefaultMaxReceiveConnectionFlowControlWindow 90 } 91 maxIncomingStreams := config.MaxIncomingStreams 92 if maxIncomingStreams == 0 { 93 maxIncomingStreams = protocol.DefaultMaxIncomingStreams 94 } else if maxIncomingStreams < 0 { 95 maxIncomingStreams = 0 96 } 97 maxIncomingUniStreams := config.MaxIncomingUniStreams 98 if maxIncomingUniStreams == 0 { 99 maxIncomingUniStreams = protocol.DefaultMaxIncomingUniStreams 100 } else if maxIncomingUniStreams < 0 { 101 maxIncomingUniStreams = 0 102 } 103 initialPacketSize := config.InitialPacketSize 104 if initialPacketSize == 0 { 105 initialPacketSize = protocol.InitialPacketSize 106 } 107 108 return &Config{ 109 GetConfigForClient: config.GetConfigForClient, 110 Versions: versions, 111 HandshakeIdleTimeout: handshakeIdleTimeout, 112 MaxIdleTimeout: idleTimeout, 113 KeepAlivePeriod: config.KeepAlivePeriod, 114 InitialStreamReceiveWindow: initialStreamReceiveWindow, 115 MaxStreamReceiveWindow: maxStreamReceiveWindow, 116 InitialConnectionReceiveWindow: initialConnectionReceiveWindow, 117 MaxConnectionReceiveWindow: maxConnectionReceiveWindow, 118 AllowConnectionWindowIncrease: config.AllowConnectionWindowIncrease, 119 MaxIncomingStreams: maxIncomingStreams, 120 MaxIncomingUniStreams: maxIncomingUniStreams, 121 TokenStore: config.TokenStore, 122 EnableDatagrams: config.EnableDatagrams, 123 InitialPacketSize: initialPacketSize, 124 DisablePathMTUDiscovery: config.DisablePathMTUDiscovery, 125 Allow0RTT: config.Allow0RTT, 126 Tracer: config.Tracer, 127 } 128 }