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How to use Len method of data Package

Best K6 code snippet using data.Len

handshake_messages.go

Source:handshake_messages.go

...44		return m.raw45	}46	length := 2 + 32 + 1 + len(m.sessionId) + 2 + len(m.cipherSuites)*2 + 1 + len(m.compressionMethods)47	numExtensions := 048	extensionsLength := 049	if m.nextProtoNeg {50		numExtensions++51	}52	if m.ocspStapling {53		extensionsLength += 1 + 2 + 254		numExtensions++55	}56	if len(m.serverName) > 0 {57		extensionsLength += 5 + len(m.serverName)58		numExtensions++59	}60	if len(m.supportedCurves) > 0 {61		extensionsLength += 2 + 2*len(m.supportedCurves)62		numExtensions++63	}64	if len(m.supportedPoints) > 0 {65		extensionsLength += 1 + len(m.supportedPoints)66		numExtensions++67	}68	if m.ticketSupported {69		extensionsLength += len(m.sessionTicket)70		numExtensions++71	}72	if len(m.signatureAndHashes) > 0 {73		extensionsLength += 2 + 2*len(m.signatureAndHashes)74		numExtensions++75	}76	if numExtensions > 0 {77		extensionsLength += 4 * numExtensions78		length += 2 + extensionsLength79	}80	x := make([]byte, 4+length)81	x[0] = typeClientHello82	x[1] = uint8(length >> 16)83	x[2] = uint8(length >> 8)84	x[3] = uint8(length)85	x[4] = uint8(m.vers >> 8)86	x[5] = uint8(m.vers)87	copy(x[6:38], m.random)88	x[38] = uint8(len(m.sessionId))89	copy(x[39:39+len(m.sessionId)], m.sessionId)90	y := x[39+len(m.sessionId):]91	y[0] = uint8(len(m.cipherSuites) >> 7)92	y[1] = uint8(len(m.cipherSuites) << 1)93	for i, suite := range m.cipherSuites {94		y[2+i*2] = uint8(suite >> 8)95		y[3+i*2] = uint8(suite)96	}97	z := y[2+len(m.cipherSuites)*2:]98	z[0] = uint8(len(m.compressionMethods))99	copy(z[1:], m.compressionMethods)100	z = z[1+len(m.compressionMethods):]101	if numExtensions > 0 {102		z[0] = byte(extensionsLength >> 8)103		z[1] = byte(extensionsLength)104		z = z[2:]105	}106	if m.nextProtoNeg {107		z[0] = byte(extensionNextProtoNeg >> 8)108		z[1] = byte(extensionNextProtoNeg)109		// The length is always 0110		z = z[4:]111	}112	if len(m.serverName) > 0 {113		z[0] = byte(extensionServerName >> 8)114		z[1] = byte(extensionServerName)115		l := len(m.serverName) + 5116		z[2] = byte(l >> 8)117		z[3] = byte(l)118		z = z[4:]119		// RFC 3546, section 3.1120		//121		// struct {122		//     NameType name_type;123		//     select (name_type) {124		//         case host_name: HostName;125		//     } name;126		// } ServerName;127		//128		// enum {129		//     host_name(0), (255)130		// } NameType;131		//132		// opaque HostName<1..2^16-1>;133		//134		// struct {135		//     ServerName server_name_list<1..2^16-1>136		// } ServerNameList;137		z[0] = byte((len(m.serverName) + 3) >> 8)138		z[1] = byte(len(m.serverName) + 3)139		z[3] = byte(len(m.serverName) >> 8)140		z[4] = byte(len(m.serverName))141		copy(z[5:], []byte(m.serverName))142		z = z[l:]143	}144	if m.ocspStapling {145		// RFC 4366, section 3.6146		z[0] = byte(extensionStatusRequest >> 8)147		z[1] = byte(extensionStatusRequest)148		z[2] = 0149		z[3] = 5150		z[4] = 1 // OCSP type151		// Two zero valued uint16s for the two lengths.152		z = z[9:]153	}154	if len(m.supportedCurves) > 0 {155		// http://tools.ietf.org/html/rfc4492#section-5.5.1156		z[0] = byte(extensionSupportedCurves >> 8)157		z[1] = byte(extensionSupportedCurves)158		l := 2 + 2*len(m.supportedCurves)159		z[2] = byte(l >> 8)160		z[3] = byte(l)161		l -= 2162		z[4] = byte(l >> 8)163		z[5] = byte(l)164		z = z[6:]165		for _, curve := range m.supportedCurves {166			z[0] = byte(curve >> 8)167			z[1] = byte(curve)168			z = z[2:]169		}170	}171	if len(m.supportedPoints) > 0 {172		// http://tools.ietf.org/html/rfc4492#section-5.5.2173		z[0] = byte(extensionSupportedPoints >> 8)174		z[1] = byte(extensionSupportedPoints)175		l := 1 + len(m.supportedPoints)176		z[2] = byte(l >> 8)177		z[3] = byte(l)178		l--179		z[4] = byte(l)180		z = z[5:]181		for _, pointFormat := range m.supportedPoints {182			z[0] = byte(pointFormat)183			z = z[1:]184		}185	}186	if m.ticketSupported {187		// http://tools.ietf.org/html/rfc5077#section-3.2188		z[0] = byte(extensionSessionTicket >> 8)189		z[1] = byte(extensionSessionTicket)190		l := len(m.sessionTicket)191		z[2] = byte(l >> 8)192		z[3] = byte(l)193		z = z[4:]194		copy(z, m.sessionTicket)195		z = z[len(m.sessionTicket):]196	}197	if len(m.signatureAndHashes) > 0 {198		// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1199		z[0] = byte(extensionSignatureAlgorithms >> 8)200		z[1] = byte(extensionSignatureAlgorithms)201		l := 2 + 2*len(m.signatureAndHashes)202		z[2] = byte(l >> 8)203		z[3] = byte(l)204		z = z[4:]205		l -= 2206		z[0] = byte(l >> 8)207		z[1] = byte(l)208		z = z[2:]209		for _, sigAndHash := range m.signatureAndHashes {210			z[0] = sigAndHash.hash211			z[1] = sigAndHash.signature212			z = z[2:]213		}214	}215	m.raw = x216	return x217}218func (m *clientHelloMsg) unmarshal(data []byte) bool {219	if len(data) < 42 {220		return false221	}222	m.raw = data223	m.vers = uint16(data[4])<<8 | uint16(data[5])224	m.random = data[6:38]225	sessionIdLen := int(data[38])226	if sessionIdLen > 32 || len(data) < 39+sessionIdLen {227		return false228	}229	m.sessionId = data[39 : 39+sessionIdLen]230	data = data[39+sessionIdLen:]231	if len(data) < 2 {232		return false233	}234	// cipherSuiteLen is the number of bytes of cipher suite numbers. Since235	// they are uint16s, the number must be even.236	cipherSuiteLen := int(data[0])<<8 | int(data[1])237	if cipherSuiteLen%2 == 1 || len(data) < 2+cipherSuiteLen {238		return false239	}240	numCipherSuites := cipherSuiteLen / 2241	m.cipherSuites = make([]uint16, numCipherSuites)242	for i := 0; i < numCipherSuites; i++ {243		m.cipherSuites[i] = uint16(data[2+2*i])<<8 | uint16(data[3+2*i])244	}245	data = data[2+cipherSuiteLen:]246	if len(data) < 1 {247		return false248	}249	compressionMethodsLen := int(data[0])250	if len(data) < 1+compressionMethodsLen {251		return false252	}253	m.compressionMethods = data[1 : 1+compressionMethodsLen]254	data = data[1+compressionMethodsLen:]255	m.nextProtoNeg = false256	m.serverName = ""257	m.ocspStapling = false258	m.ticketSupported = false259	m.sessionTicket = nil260	m.signatureAndHashes = nil261	if len(data) == 0 {262		// ClientHello is optionally followed by extension data263		return true264	}265	if len(data) < 2 {266		return false267	}268	extensionsLength := int(data[0])<<8 | int(data[1])269	data = data[2:]270	if extensionsLength != len(data) {271		return false272	}273	for len(data) != 0 {274		if len(data) < 4 {275			return false276		}277		extension := uint16(data[0])<<8 | uint16(data[1])278		length := int(data[2])<<8 | int(data[3])279		data = data[4:]280		if len(data) < length {281			return false282		}283		switch extension {284		case extensionServerName:285			if length < 2 {286				return false287			}288			numNames := int(data[0])<<8 | int(data[1])289			d := data[2:]290			for i := 0; i < numNames; i++ {291				if len(d) < 3 {292					return false293				}294				nameType := d[0]295				nameLen := int(d[1])<<8 | int(d[2])296				d = d[3:]297				if len(d) < nameLen {298					return false299				}300				if nameType == 0 {301					m.serverName = string(d[0:nameLen])302					break303				}304				d = d[nameLen:]305			}306		case extensionNextProtoNeg:307			if length > 0 {308				return false309			}310			m.nextProtoNeg = true311		case extensionStatusRequest:312			m.ocspStapling = length > 0 && data[0] == statusTypeOCSP313		case extensionSupportedCurves:314			// http://tools.ietf.org/html/rfc4492#section-5.5.1315			if length < 2 {316				return false317			}318			l := int(data[0])<<8 | int(data[1])319			if l%2 == 1 || length != l+2 {320				return false321			}322			numCurves := l / 2323			m.supportedCurves = make([]uint16, numCurves)324			d := data[2:]325			for i := 0; i < numCurves; i++ {326				m.supportedCurves[i] = uint16(d[0])<<8 | uint16(d[1])327				d = d[2:]328			}329		case extensionSupportedPoints:330			// http://tools.ietf.org/html/rfc4492#section-5.5.2331			if length < 1 {332				return false333			}334			l := int(data[0])335			if length != l+1 {336				return false337			}338			m.supportedPoints = make([]uint8, l)339			copy(m.supportedPoints, data[1:])340		case extensionSessionTicket:341			// http://tools.ietf.org/html/rfc5077#section-3.2342			m.ticketSupported = true343			m.sessionTicket = data[:length]344		case extensionSignatureAlgorithms:345			// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1346			if length < 2 || length&1 != 0 {347				return false348			}349			l := int(data[0])<<8 | int(data[1])350			if l != length-2 {351				return false352			}353			n := l / 2354			d := data[2:]355			m.signatureAndHashes = make([]signatureAndHash, n)356			for i := range m.signatureAndHashes {357				m.signatureAndHashes[i].hash = d[0]358				m.signatureAndHashes[i].signature = d[1]359				d = d[2:]360			}361		}362		data = data[length:]363	}364	return true365}366type serverHelloMsg struct {367	raw               []byte368	vers              uint16369	random            []byte370	sessionId         []byte371	cipherSuite       uint16372	compressionMethod uint8373	nextProtoNeg      bool374	nextProtos        []string375	ocspStapling      bool376	ticketSupported   bool377}378func (m *serverHelloMsg) equal(i interface{}) bool {379	m1, ok := i.(*serverHelloMsg)380	if !ok {381		return false382	}383	return bytes.Equal(m.raw, m1.raw) &&384		m.vers == m1.vers &&385		bytes.Equal(m.random, m1.random) &&386		bytes.Equal(m.sessionId, m1.sessionId) &&387		m.cipherSuite == m1.cipherSuite &&388		m.compressionMethod == m1.compressionMethod &&389		m.nextProtoNeg == m1.nextProtoNeg &&390		eqStrings(m.nextProtos, m1.nextProtos) &&391		m.ocspStapling == m1.ocspStapling &&392		m.ticketSupported == m1.ticketSupported393}394func (m *serverHelloMsg) marshal() []byte {395	if m.raw != nil {396		return m.raw397	}398	length := 38 + len(m.sessionId)399	numExtensions := 0400	extensionsLength := 0401	nextProtoLen := 0402	if m.nextProtoNeg {403		numExtensions++404		for _, v := range m.nextProtos {405			nextProtoLen += len(v)406		}407		nextProtoLen += len(m.nextProtos)408		extensionsLength += nextProtoLen409	}410	if m.ocspStapling {411		numExtensions++412	}413	if m.ticketSupported {414		numExtensions++415	}416	if numExtensions > 0 {417		extensionsLength += 4 * numExtensions418		length += 2 + extensionsLength419	}420	x := make([]byte, 4+length)421	x[0] = typeServerHello422	x[1] = uint8(length >> 16)423	x[2] = uint8(length >> 8)424	x[3] = uint8(length)425	x[4] = uint8(m.vers >> 8)426	x[5] = uint8(m.vers)427	copy(x[6:38], m.random)428	x[38] = uint8(len(m.sessionId))429	copy(x[39:39+len(m.sessionId)], m.sessionId)430	z := x[39+len(m.sessionId):]431	z[0] = uint8(m.cipherSuite >> 8)432	z[1] = uint8(m.cipherSuite)433	z[2] = uint8(m.compressionMethod)434	z = z[3:]435	if numExtensions > 0 {436		z[0] = byte(extensionsLength >> 8)437		z[1] = byte(extensionsLength)438		z = z[2:]439	}440	if m.nextProtoNeg {441		z[0] = byte(extensionNextProtoNeg >> 8)442		z[1] = byte(extensionNextProtoNeg)443		z[2] = byte(nextProtoLen >> 8)444		z[3] = byte(nextProtoLen)445		z = z[4:]446		for _, v := range m.nextProtos {447			l := len(v)448			if l > 255 {449				l = 255450			}451			z[0] = byte(l)452			copy(z[1:], []byte(v[0:l]))453			z = z[1+l:]454		}455	}456	if m.ocspStapling {457		z[0] = byte(extensionStatusRequest >> 8)458		z[1] = byte(extensionStatusRequest)459		z = z[4:]460	}461	if m.ticketSupported {462		z[0] = byte(extensionSessionTicket >> 8)463		z[1] = byte(extensionSessionTicket)464		z = z[4:]465	}466	m.raw = x467	return x468}469func (m *serverHelloMsg) unmarshal(data []byte) bool {470	if len(data) < 42 {471		return false472	}473	m.raw = data474	m.vers = uint16(data[4])<<8 | uint16(data[5])475	m.random = data[6:38]476	sessionIdLen := int(data[38])477	if sessionIdLen > 32 || len(data) < 39+sessionIdLen {478		return false479	}480	m.sessionId = data[39 : 39+sessionIdLen]481	data = data[39+sessionIdLen:]482	if len(data) < 3 {483		return false484	}485	m.cipherSuite = uint16(data[0])<<8 | uint16(data[1])486	m.compressionMethod = data[2]487	data = data[3:]488	m.nextProtoNeg = false489	m.nextProtos = nil490	m.ocspStapling = false491	m.ticketSupported = false492	if len(data) == 0 {493		// ServerHello is optionally followed by extension data494		return true495	}496	if len(data) < 2 {497		return false498	}499	extensionsLength := int(data[0])<<8 | int(data[1])500	data = data[2:]501	if len(data) != extensionsLength {502		return false503	}504	for len(data) != 0 {505		if len(data) < 4 {506			return false507		}508		extension := uint16(data[0])<<8 | uint16(data[1])509		length := int(data[2])<<8 | int(data[3])510		data = data[4:]511		if len(data) < length {512			return false513		}514		switch extension {515		case extensionNextProtoNeg:516			m.nextProtoNeg = true517			d := data[:length]518			for len(d) > 0 {519				l := int(d[0])520				d = d[1:]521				if l == 0 || l > len(d) {522					return false523				}524				m.nextProtos = append(m.nextProtos, string(d[:l]))525				d = d[l:]526			}527		case extensionStatusRequest:528			if length > 0 {529				return false530			}531			m.ocspStapling = true532		case extensionSessionTicket:533			if length > 0 {534				return false535			}536			m.ticketSupported = true537		}538		data = data[length:]539	}540	return true541}542type certificateMsg struct {543	raw          []byte544	certificates [][]byte545}546func (m *certificateMsg) equal(i interface{}) bool {547	m1, ok := i.(*certificateMsg)548	if !ok {549		return false550	}551	return bytes.Equal(m.raw, m1.raw) &&552		eqByteSlices(m.certificates, m1.certificates)553}554func (m *certificateMsg) marshal() (x []byte) {555	if m.raw != nil {556		return m.raw557	}558	var i int559	for _, slice := range m.certificates {560		i += len(slice)561	}562	length := 3 + 3*len(m.certificates) + i563	x = make([]byte, 4+length)564	x[0] = typeCertificate565	x[1] = uint8(length >> 16)566	x[2] = uint8(length >> 8)567	x[3] = uint8(length)568	certificateOctets := length - 3569	x[4] = uint8(certificateOctets >> 16)570	x[5] = uint8(certificateOctets >> 8)571	x[6] = uint8(certificateOctets)572	y := x[7:]573	for _, slice := range m.certificates {574		y[0] = uint8(len(slice) >> 16)575		y[1] = uint8(len(slice) >> 8)576		y[2] = uint8(len(slice))577		copy(y[3:], slice)578		y = y[3+len(slice):]579	}580	m.raw = x581	return582}583func (m *certificateMsg) unmarshal(data []byte) bool {584	if len(data) < 7 {585		return false586	}587	m.raw = data588	certsLen := uint32(data[4])<<16 | uint32(data[5])<<8 | uint32(data[6])589	if uint32(len(data)) != certsLen+7 {590		return false591	}592	numCerts := 0593	d := data[7:]594	for certsLen > 0 {595		if len(d) < 4 {596			return false597		}598		certLen := uint32(d[0])<<16 | uint32(d[1])<<8 | uint32(d[2])599		if uint32(len(d)) < 3+certLen {600			return false601		}602		d = d[3+certLen:]603		certsLen -= 3 + certLen604		numCerts++605	}606	m.certificates = make([][]byte, numCerts)607	d = data[7:]608	for i := 0; i < numCerts; i++ {609		certLen := uint32(d[0])<<16 | uint32(d[1])<<8 | uint32(d[2])610		m.certificates[i] = d[3 : 3+certLen]611		d = d[3+certLen:]612	}613	return true614}615type serverKeyExchangeMsg struct {616	raw []byte617	key []byte618}619func (m *serverKeyExchangeMsg) equal(i interface{}) bool {620	m1, ok := i.(*serverKeyExchangeMsg)621	if !ok {622		return false623	}624	return bytes.Equal(m.raw, m1.raw) &&625		bytes.Equal(m.key, m1.key)626}627func (m *serverKeyExchangeMsg) marshal() []byte {628	if m.raw != nil {629		return m.raw630	}631	length := len(m.key)632	x := make([]byte, length+4)633	x[0] = typeServerKeyExchange634	x[1] = uint8(length >> 16)635	x[2] = uint8(length >> 8)636	x[3] = uint8(length)637	copy(x[4:], m.key)638	m.raw = x639	return x640}641func (m *serverKeyExchangeMsg) unmarshal(data []byte) bool {642	m.raw = data643	if len(data) < 4 {644		return false645	}646	m.key = data[4:]647	return true648}649type certificateStatusMsg struct {650	raw        []byte651	statusType uint8652	response   []byte653}654func (m *certificateStatusMsg) equal(i interface{}) bool {655	m1, ok := i.(*certificateStatusMsg)656	if !ok {657		return false658	}659	return bytes.Equal(m.raw, m1.raw) &&660		m.statusType == m1.statusType &&661		bytes.Equal(m.response, m1.response)662}663func (m *certificateStatusMsg) marshal() []byte {664	if m.raw != nil {665		return m.raw666	}667	var x []byte668	if m.statusType == statusTypeOCSP {669		x = make([]byte, 4+4+len(m.response))670		x[0] = typeCertificateStatus671		l := len(m.response) + 4672		x[1] = byte(l >> 16)673		x[2] = byte(l >> 8)674		x[3] = byte(l)675		x[4] = statusTypeOCSP676		l -= 4677		x[5] = byte(l >> 16)678		x[6] = byte(l >> 8)679		x[7] = byte(l)680		copy(x[8:], m.response)681	} else {682		x = []byte{typeCertificateStatus, 0, 0, 1, m.statusType}683	}684	m.raw = x685	return x686}687func (m *certificateStatusMsg) unmarshal(data []byte) bool {688	m.raw = data689	if len(data) < 5 {690		return false691	}692	m.statusType = data[4]693	m.response = nil694	if m.statusType == statusTypeOCSP {695		if len(data) < 8 {696			return false697		}698		respLen := uint32(data[5])<<16 | uint32(data[6])<<8 | uint32(data[7])699		if uint32(len(data)) != 4+4+respLen {700			return false701		}702		m.response = data[8:]703	}704	return true705}706type serverHelloDoneMsg struct{}707func (m *serverHelloDoneMsg) equal(i interface{}) bool {708	_, ok := i.(*serverHelloDoneMsg)709	return ok710}711func (m *serverHelloDoneMsg) marshal() []byte {712	x := make([]byte, 4)713	x[0] = typeServerHelloDone714	return x715}716func (m *serverHelloDoneMsg) unmarshal(data []byte) bool {717	return len(data) == 4718}719type clientKeyExchangeMsg struct {720	raw        []byte721	ciphertext []byte722}723func (m *clientKeyExchangeMsg) equal(i interface{}) bool {724	m1, ok := i.(*clientKeyExchangeMsg)725	if !ok {726		return false727	}728	return bytes.Equal(m.raw, m1.raw) &&729		bytes.Equal(m.ciphertext, m1.ciphertext)730}731func (m *clientKeyExchangeMsg) marshal() []byte {732	if m.raw != nil {733		return m.raw734	}735	length := len(m.ciphertext)736	x := make([]byte, length+4)737	x[0] = typeClientKeyExchange738	x[1] = uint8(length >> 16)739	x[2] = uint8(length >> 8)740	x[3] = uint8(length)741	copy(x[4:], m.ciphertext)742	m.raw = x743	return x744}745func (m *clientKeyExchangeMsg) unmarshal(data []byte) bool {746	m.raw = data747	if len(data) < 4 {748		return false749	}750	l := int(data[1])<<16 | int(data[2])<<8 | int(data[3])751	if l != len(data)-4 {752		return false753	}754	m.ciphertext = data[4:]755	return true756}757type finishedMsg struct {758	raw        []byte759	verifyData []byte760}761func (m *finishedMsg) equal(i interface{}) bool {762	m1, ok := i.(*finishedMsg)763	if !ok {764		return false765	}766	return bytes.Equal(m.raw, m1.raw) &&767		bytes.Equal(m.verifyData, m1.verifyData)768}769func (m *finishedMsg) marshal() (x []byte) {770	if m.raw != nil {771		return m.raw772	}773	x = make([]byte, 4+len(m.verifyData))774	x[0] = typeFinished775	x[3] = byte(len(m.verifyData))776	copy(x[4:], m.verifyData)777	m.raw = x778	return779}780func (m *finishedMsg) unmarshal(data []byte) bool {781	m.raw = data782	if len(data) < 4 {783		return false784	}785	m.verifyData = data[4:]786	return true787}788type nextProtoMsg struct {789	raw   []byte790	proto string791}792func (m *nextProtoMsg) equal(i interface{}) bool {793	m1, ok := i.(*nextProtoMsg)794	if !ok {795		return false796	}797	return bytes.Equal(m.raw, m1.raw) &&798		m.proto == m1.proto799}800func (m *nextProtoMsg) marshal() []byte {801	if m.raw != nil {802		return m.raw803	}804	l := len(m.proto)805	if l > 255 {806		l = 255807	}808	padding := 32 - (l+2)%32809	length := l + padding + 2810	x := make([]byte, length+4)811	x[0] = typeNextProtocol812	x[1] = uint8(length >> 16)813	x[2] = uint8(length >> 8)814	x[3] = uint8(length)815	y := x[4:]816	y[0] = byte(l)817	copy(y[1:], []byte(m.proto[0:l]))818	y = y[1+l:]819	y[0] = byte(padding)820	m.raw = x821	return x822}823func (m *nextProtoMsg) unmarshal(data []byte) bool {824	m.raw = data825	if len(data) < 5 {826		return false827	}828	data = data[4:]829	protoLen := int(data[0])830	data = data[1:]831	if len(data) < protoLen {832		return false833	}834	m.proto = string(data[0:protoLen])835	data = data[protoLen:]836	if len(data) < 1 {837		return false838	}839	paddingLen := int(data[0])840	data = data[1:]841	if len(data) != paddingLen {842		return false843	}844	return true845}846type certificateRequestMsg struct {847	raw []byte848	// hasSignatureAndHash indicates whether this message includes a list849	// of signature and hash functions. This change was introduced with TLS850	// 1.2.851	hasSignatureAndHash bool852	certificateTypes       []byte853	signatureAndHashes     []signatureAndHash854	certificateAuthorities [][]byte855}856func (m *certificateRequestMsg) equal(i interface{}) bool {857	m1, ok := i.(*certificateRequestMsg)858	if !ok {859		return false860	}861	return bytes.Equal(m.raw, m1.raw) &&862		bytes.Equal(m.certificateTypes, m1.certificateTypes) &&863		eqByteSlices(m.certificateAuthorities, m1.certificateAuthorities) &&864		eqSignatureAndHashes(m.signatureAndHashes, m1.signatureAndHashes)865}866func (m *certificateRequestMsg) marshal() (x []byte) {867	if m.raw != nil {868		return m.raw869	}870	// See http://tools.ietf.org/html/rfc4346#section-7.4.4871	length := 1 + len(m.certificateTypes) + 2872	casLength := 0873	for _, ca := range m.certificateAuthorities {874		casLength += 2 + len(ca)875	}876	length += casLength877	if m.hasSignatureAndHash {878		length += 2 + 2*len(m.signatureAndHashes)879	}880	x = make([]byte, 4+length)881	x[0] = typeCertificateRequest882	x[1] = uint8(length >> 16)883	x[2] = uint8(length >> 8)884	x[3] = uint8(length)885	x[4] = uint8(len(m.certificateTypes))886	copy(x[5:], m.certificateTypes)887	y := x[5+len(m.certificateTypes):]888	if m.hasSignatureAndHash {889		n := len(m.signatureAndHashes) * 2890		y[0] = uint8(n >> 8)891		y[1] = uint8(n)892		y = y[2:]893		for _, sigAndHash := range m.signatureAndHashes {894			y[0] = sigAndHash.hash895			y[1] = sigAndHash.signature896			y = y[2:]897		}898	}899	y[0] = uint8(casLength >> 8)900	y[1] = uint8(casLength)901	y = y[2:]902	for _, ca := range m.certificateAuthorities {903		y[0] = uint8(len(ca) >> 8)904		y[1] = uint8(len(ca))905		y = y[2:]906		copy(y, ca)907		y = y[len(ca):]908	}909	m.raw = x910	return911}912func (m *certificateRequestMsg) unmarshal(data []byte) bool {913	m.raw = data914	if len(data) < 5 {915		return false916	}917	length := uint32(data[1])<<16 | uint32(data[2])<<8 | uint32(data[3])918	if uint32(len(data))-4 != length {919		return false920	}921	numCertTypes := int(data[4])922	data = data[5:]923	if numCertTypes == 0 || len(data) <= numCertTypes {924		return false925	}926	m.certificateTypes = make([]byte, numCertTypes)927	if copy(m.certificateTypes, data) != numCertTypes {928		return false929	}930	data = data[numCertTypes:]931	if m.hasSignatureAndHash {932		if len(data) < 2 {933			return false934		}935		sigAndHashLen := uint16(data[0])<<8 | uint16(data[1])936		data = data[2:]937		if sigAndHashLen&1 != 0 {938			return false939		}940		if len(data) < int(sigAndHashLen) {941			return false942		}943		numSigAndHash := sigAndHashLen / 2944		m.signatureAndHashes = make([]signatureAndHash, numSigAndHash)945		for i := range m.signatureAndHashes {946			m.signatureAndHashes[i].hash = data[0]947			m.signatureAndHashes[i].signature = data[1]948			data = data[2:]949		}950	}951	if len(data) < 2 {952		return false953	}954	casLength := uint16(data[0])<<8 | uint16(data[1])955	data = data[2:]956	if len(data) < int(casLength) {957		return false958	}959	cas := make([]byte, casLength)960	copy(cas, data)961	data = data[casLength:]962	m.certificateAuthorities = nil963	for len(cas) > 0 {964		if len(cas) < 2 {965			return false966		}967		caLen := uint16(cas[0])<<8 | uint16(cas[1])968		cas = cas[2:]969		if len(cas) < int(caLen) {970			return false971		}972		m.certificateAuthorities = append(m.certificateAuthorities, cas[:caLen])973		cas = cas[caLen:]974	}975	if len(data) > 0 {976		return false977	}978	return true979}980type certificateVerifyMsg struct {981	raw                 []byte982	hasSignatureAndHash bool983	signatureAndHash    signatureAndHash984	signature           []byte985}986func (m *certificateVerifyMsg) equal(i interface{}) bool {987	m1, ok := i.(*certificateVerifyMsg)988	if !ok {989		return false990	}991	return bytes.Equal(m.raw, m1.raw) &&992		m.hasSignatureAndHash == m1.hasSignatureAndHash &&993		m.signatureAndHash.hash == m1.signatureAndHash.hash &&994		m.signatureAndHash.signature == m1.signatureAndHash.signature &&995		bytes.Equal(m.signature, m1.signature)996}997func (m *certificateVerifyMsg) marshal() (x []byte) {998	if m.raw != nil {999		return m.raw1000	}1001	// See http://tools.ietf.org/html/rfc4346#section-7.4.81002	siglength := len(m.signature)1003	length := 2 + siglength1004	if m.hasSignatureAndHash {1005		length += 21006	}1007	x = make([]byte, 4+length)1008	x[0] = typeCertificateVerify1009	x[1] = uint8(length >> 16)1010	x[2] = uint8(length >> 8)1011	x[3] = uint8(length)1012	y := x[4:]1013	if m.hasSignatureAndHash {1014		y[0] = m.signatureAndHash.hash1015		y[1] = m.signatureAndHash.signature1016		y = y[2:]1017	}1018	y[0] = uint8(siglength >> 8)1019	y[1] = uint8(siglength)1020	copy(y[2:], m.signature)1021	m.raw = x1022	return1023}1024func (m *certificateVerifyMsg) unmarshal(data []byte) bool {1025	m.raw = data1026	if len(data) < 6 {1027		return false1028	}1029	length := uint32(data[1])<<16 | uint32(data[2])<<8 | uint32(data[3])1030	if uint32(len(data))-4 != length {1031		return false1032	}1033	data = data[4:]1034	if m.hasSignatureAndHash {1035		m.signatureAndHash.hash = data[0]1036		m.signatureAndHash.signature = data[1]1037		data = data[2:]1038	}1039	if len(data) < 2 {1040		return false1041	}1042	siglength := int(data[0])<<8 + int(data[1])1043	data = data[2:]1044	if len(data) != siglength {1045		return false1046	}1047	m.signature = data1048	return true1049}1050type newSessionTicketMsg struct {1051	raw    []byte1052	ticket []byte1053}1054func (m *newSessionTicketMsg) equal(i interface{}) bool {1055	m1, ok := i.(*newSessionTicketMsg)1056	if !ok {1057		return false1058	}1059	return bytes.Equal(m.raw, m1.raw) &&1060		bytes.Equal(m.ticket, m1.ticket)1061}1062func (m *newSessionTicketMsg) marshal() (x []byte) {1063	if m.raw != nil {1064		return m.raw1065	}1066	// See http://tools.ietf.org/html/rfc5077#section-3.31067	ticketLen := len(m.ticket)1068	length := 2 + 4 + ticketLen1069	x = make([]byte, 4+length)1070	x[0] = typeNewSessionTicket1071	x[1] = uint8(length >> 16)1072	x[2] = uint8(length >> 8)1073	x[3] = uint8(length)1074	x[8] = uint8(ticketLen >> 8)1075	x[9] = uint8(ticketLen)1076	copy(x[10:], m.ticket)1077	m.raw = x1078	return1079}1080func (m *newSessionTicketMsg) unmarshal(data []byte) bool {1081	m.raw = data1082	if len(data) < 10 {1083		return false1084	}1085	length := uint32(data[1])<<16 | uint32(data[2])<<8 | uint32(data[3])1086	if uint32(len(data))-4 != length {1087		return false1088	}1089	ticketLen := int(data[8])<<8 + int(data[9])1090	if len(data)-10 != ticketLen {1091		return false1092	}1093	m.ticket = data[10:]1094	return true1095}1096func eqUint16s(x, y []uint16) bool {1097	if len(x) != len(y) {1098		return false1099	}1100	for i, v := range x {1101		if y[i] != v {1102			return false1103		}1104	}...

https.go

Source:https.go

...63		err = fmt.Errorf("readHandshake: type[%d] is not clientHello", uint16(data[5]))64		return65	}66	// session67	sessionIdLen := int(data[43])68	if sessionIdLen > 32 || len(data) < 44+sessionIdLen {69		err = fmt.Errorf("readHandshake: sessionIdLen[%d] is long", sessionIdLen)70		return71	}72	data = data[44+sessionIdLen:]73	if len(data) < 2 {74		err = fmt.Errorf("readHandshake: dataLen[%d] after session is short", len(data))75		return76	}77	// cipher suite numbers78	cipherSuiteLen := int(data[0])<<8 | int(data[1])79	if cipherSuiteLen%2 == 1 || len(data) < 2+cipherSuiteLen {80		err = fmt.Errorf("readHandshake: dataLen[%d] after cipher suite is short", len(data))81		return82	}83	data = data[2+cipherSuiteLen:]84	if len(data) < 1 {85		err = fmt.Errorf("readHandshake: cipherSuiteLen[%d] is long", cipherSuiteLen)86		return87	}88	// compression method89	compressionMethodsLen := int(data[0])90	if len(data) < 1+compressionMethodsLen {91		err = fmt.Errorf("readHandshake: compressionMethodsLen[%d] is long", compressionMethodsLen)92		return93	}94	data = data[1+compressionMethodsLen:]95	if len(data) == 0 {96		// ClientHello is optionally followed by extension data97		err = fmt.Errorf("readHandshake: there is no extension data to get servername")98		return99	}100	if len(data) < 2 {101		err = fmt.Errorf("readHandshake: extension dataLen[%d] is too short", len(data))102		return103	}104	extensionsLength := int(data[0])<<8 | int(data[1])105	data = data[2:]106	if extensionsLength != len(data) {107		err = fmt.Errorf("readHandshake: extensionsLen[%d] is not equal to dataLen[%d]", extensionsLength, len(data))108		return109	}110	for len(data) != 0 {111		if len(data) < 4 {112			err = fmt.Errorf("readHandshake: extensionsDataLen[%d] is too short", len(data))113			return114		}115		extension := uint16(data[0])<<8 | uint16(data[1])116		length := int(data[2])<<8 | int(data[3])117		data = data[4:]118		if len(data) < length {119			err = fmt.Errorf("readHandshake: extensionLen[%d] is long", length)120			return121		}122		switch extension {123		case extensionRenegotiationInfo:124			if length != 1 || data[0] != 0 {125				err = fmt.Errorf("readHandshake: extension reNegotiationInfoLen[%d] is short", length)126				return127			}128		case extensionNextProtoNeg:129		case extensionStatusRequest:130		case extensionServerName:131			d := data[:length]132			if len(d) < 2 {133				err = fmt.Errorf("readHandshake: remiaining dataLen[%d] is short", len(d))134				return135			}136			namesLen := int(d[0])<<8 | int(d[1])137			d = d[2:]138			if len(d) != namesLen {139				err = fmt.Errorf("readHandshake: nameListLen[%d] is not equal to dataLen[%d]", namesLen, len(d))140				return141			}142			for len(d) > 0 {143				if len(d) < 3 {144					err = fmt.Errorf("readHandshake: extension serverNameLen[%d] is short", len(d))145					return146				}147				nameType := d[0]148				nameLen := int(d[1])<<8 | int(d[2])149				d = d[3:]150				if len(d) < nameLen {151					err = fmt.Errorf("readHandshake: nameLen[%d] is not equal to dataLen[%d]", nameLen, len(d))152					return153				}154				if nameType == 0 {155					serverName := string(d[:nameLen])156					host = strings.TrimSpace(serverName)157					return host, nil158				}159				d = d[nameLen:]160			}161		}162		data = data[length:]163	}164	err = fmt.Errorf("Unknow error")165	return166}167func GetHttpsHostname(c net.Conn) (_ net.Conn, _ map[string]string, err error) {168	reqInfoMap := make(map[string]string, 0)169	sc, rd := gnet.NewSharedConn(c)170	host, err := readHandshake(rd)171	if err != nil {172		return nil, reqInfoMap, err173	}...

Len

Using AI Code Generation

1import "fmt"2type data struct {3}4func (d *data) Len() int {5    return len(d.name)6}7func main() {8    d := data{"John", 20}9    fmt.Println(d.Len())10}11import "fmt"12type data struct {13}14func (d *data) Len() int {15    return len(d.name)16}17func main() {18    d := data{"John", 20}19    fmt.Println(d.Len())20}21import "fmt"22type data struct {23}24func (d *data) Len() int {25    return len(d.name)26}27func main() {28    d := data{"John", 20}29    fmt.Println(d.Len())30}31import "fmt"32type data struct {33}34func (d *data) Len() int {35    return len(d.name)36}37func main() {38    d := data{"John", 20}39    fmt.Println(d.Len())40}41import "fmt"42type data struct {43}44func (d *data) Len() int {45    return len(d.name)46}47func main() {48    d := data{"John", 20}49    fmt.Println(d.Len())50}51import "fmt"52type data struct {53}54func (d *data) Len() int {55    return len(d.name)56}57func main() {58    d := data{"John", 20}59    fmt.Println(d.Len())60}

Len

Using AI Code Generation

1import (2func main() {3    d := data{1, 2}4    fmt.Println(d.Len())5}6import (7func main() {8    d := data{1, 2}9    fmt.Println(d.Len())10}11import (12func main() {13    d := data{1, 2}14    fmt.Println(d.Len())15}16import (17func main() {18    d := data{1, 2}19    fmt.Println(d.Len())20}21import (22func main() {23    d := data{1, 2}24    fmt.Println(d.Len())25}26import (27func main() {28    d := data{1, 2}29    fmt.Println(d.Len())30}31import (32func main() {33    d := data{1, 2}34    fmt.Println(d.Len())35}36import (37func main() {38    d := data{1, 2}39    fmt.Println(d.Len())40}41import (42func main() {43    d := data{1, 2}44    fmt.Println(d.Len())45}46import (47func main() {48    d := data{1, 2}49    fmt.Println(d.Len())50}51import (52func main() {

Len

Using AI Code Generation

1data := Data{"test"}2fmt.Println(data.Len())3data := Data{"test"}4fmt.Println(data.Len())5data := Data{"test"}6fmt.Println(data.Len())7data := Data{"test"}8fmt.Println(data.Len())9data := Data{"test"}10fmt.Println(data.Len())11data := Data{"test"}12fmt.Println(data.Len())13data := Data{"test"}14fmt.Println(data.Len())15data := Data{"test"}16fmt.Println(data.Len())17data := Data{"test"}18fmt.Println(data.Len())19data := Data{"test"}20fmt.Println(data.Len())21data := Data{"test"}22fmt.Println(data.Len())23data := Data{"test"}24fmt.Println(data.Len())25data := Data{"test"}26fmt.Println(data.Len())27data := Data{"test"}28fmt.Println(data.Len())29data := Data{"test"}30fmt.Println(data.Len())31data := Data{"test"}32fmt.Println(data.Len())33data := Data{"test"}34fmt.Println(data.Len())35data := Data{"test"}36fmt.Println(data.Len())

Len

Using AI Code Generation

1import (2func main() {3	fruits := []string{"peach", "banana", "kiwi"}4	sort.Strings(fruits)5	fmt.Println("Sorted:", fruits)6	i := sort.SearchStrings(fruits, "banana")7	fmt.Println("Index:", i)8	nums := []int{7, 2, 8}9	sort.Ints(nums)10	fmt.Println("Sorted:", nums)11	i = sort.SearchInts(nums, 8)12	fmt.Println("Index:", i)13}

Len

Using AI Code Generation

1func main() {2    data := Data{1, 2, 3, 4, 5}3    fmt.Println(data.Len())4}5func (d Data) Len() int {6    return len(d)7}8import "testing"9func TestLen(t *testing.T) {10    data := Data{1, 2, 3, 4, 5}11    if data.Len() != 5 {12        t.Error("Expected 5 but got ", data.Len())13    }14}

Len

Using AI Code Generation

1import "fmt"2func main() {3    data = data{1, 2, 3, 4}4    fmt.Println(data.Len())5}6import "fmt"7type data struct {8}9func (data) Len() int {10}11func main() {12    data = data{1, 2, 3, 4}13    fmt.Println(data.Len())14}15import "fmt"16func main() {17    data = data{1, 2, 3, 4}18    fmt.Println(data.Len())19}20import "fmt"21type data struct {22}23func (data) Len() int {24}25func main() {26    data = data{1, 2, 3, 4}27    fmt.Println(data.Len())28}29./1.go:8:6: data.Len undefined (type data has no field or method Len)30import "fmt"31func main() {32    data = data{1, 2, 3, 4}33    fmt.Println(data.Len())34}

Len

Using AI Code Generation

1import "fmt"2func main() {3    d.Set(5)4    fmt.Println(d.Len())5}6import "fmt"7func main() {8    d.Set(5)9    fmt.Println(d.Len())10}11import "fmt"12func main() {13    d.Set(5)14    fmt.Println(d.Len())15}16import "fmt"17func main() {18    d.Set(5)19    fmt.Println(d.Len())20}21import "fmt"22func main() {23    d.Set(5)24    fmt.Println(d.Len())25}26import "fmt"27func main() {28    d.Set(5)29    fmt.Println(d.Len())30}31import "fmt"32func main() {33    d.Set(5)34    fmt.Println(d.Len())35}36import "fmt"37func main() {38    d.Set(5)39    fmt.Println(d.Len())40}41import "fmt"42func main() {43    d.Set(5)44    fmt.Println(d.Len())45}46import "fmt"47func main() {48    d.Set(5)49    fmt.Println(d.Len())50}51import "fmt"52func main() {53    d.Set(5)54    fmt.Println(d.Len())55}

Len

Using AI Code Generation

1import ( "fmt" "math" )2func main() {3}4import ( "fmt" "math" )5func main() {6}7import ( "fmt" "math" )8func main() {9}10import ( "fmt" "math" )11func main() {12}13import ( "fmt" "math" )14func main() {15}16import ( "fmt" "math" )17func main() {18}19import ( "fmt" "math" )20func main() {21}22import ( "fmt" "math" )23func main() {24}25import ( "fmt" "math" )26func main() {27}28import ( "fmt" "math" )29func main() {30}31import ( "fmt" "math" )32func main() {33}34import ( "fmt" "math" )35func main() {36}37import ( "

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.