Fix several typos throughout the codebase

As detected by an automatic spell checker.

agent.go

@@ -722,9 +722,9 @@ func (a *Agent) AddRemoteCandidate(c Candidate) error {
 	}
 
 	// cannot check for network yet because it might not be applied
-	// when mDNS hostame is used.
+	// when mDNS hostname is used.
 	if c.TCPType() == TCPTypeActive {
-		// TCP Candidates with tcptype active will probe server passive ones, so
+		// TCP Candidates with TCP type active will probe server passive ones, so
 		// no need to do anything with them.
 		a.log.Infof("Ignoring remote candidate with tcpType active: %s", c)
 		return nil

agent_config.go

@@ -109,14 +109,14 @@ type AgentConfig struct {
 	// NAT1To1IPCandidateType is used along with NAT1To1IPs to specify which candidate type
 	// the 1:1 NAT IP addresses should be mapped to.
 	// If unspecified or CandidateTypeHost, NAT1To1IPs are used to replace host candidate IPs.
-	// If CandidateTypeServerReflexive, it will insert a srflx candidate (as if it was dervied
+	// If CandidateTypeServerReflexive, it will insert a srflx candidate (as if it was derived
 	// from a STUN server) with its port number being the one for the actual host candidate.
 	// Other values will result in an error.
 	NAT1To1IPCandidateType CandidateType
 
 	// NAT1To1IPs contains a list of public IP addresses that are to be used as a host
 	// candidate or srflx candidate. This is used typically for servers that are behind
-	// 1:1 D-NAT (e.g. AWS EC2 instances) and to eliminate the need of server reflexisive
+	// 1:1 D-NAT (e.g. AWS EC2 instances) and to eliminate the need of server reflexive
 	// candidate gathering.
 	NAT1To1IPs []string
 

agent_test.go

@@ -235,7 +235,7 @@ func TestHandlePeerReflexive(t *testing.T) {
 	lim := test.TimeOut(time.Second * 2)
 	defer lim.Stop()
 
-	t.Run("UDP pflx candidate from handleInbound()", func(t *testing.T) {
+	t.Run("UDP prflx candidate from handleInbound()", func(t *testing.T) {
 		var config AgentConfig
 		runAgentTest(t, &config, func(ctx context.Context, a *Agent) {
 			a.selector = &controllingSelector{agent: a, log: a.log}
@@ -920,7 +920,7 @@ func TestCandidatePairStats(t *testing.T) {
 	}
 
 	if prflxPairStat.State != CandidatePairStateFailed {
-		t.Fatalf("expected host-prfflx pair to have state failed, it has state %s instead",
+		t.Fatalf("expected host-prflx pair to have state failed, it has state %s instead",
 			prflxPairStat.State.String())
 	}
 
@@ -1232,7 +1232,7 @@ func TestAgentCredentials(t *testing.T) {
 	report := test.CheckRoutines(t)
 	defer report()
 
-	// Make sure to pass travis check by disabling the logs
+	// Make sure to pass Travis check by disabling the logs
 	log := logging.NewDefaultLoggerFactory()
 	log.DefaultLogLevel = logging.LogLevelDisabled
 
@@ -1467,7 +1467,7 @@ func TestAgentRestart(t *testing.T) {
 		<-aConnected
 		<-bConnected
 
-		// Assert that we have new candiates each time
+		// Assert that we have new candidates each time
 		assert.NotEqual(t, connAFirstCandidates, generateCandidateAddressStrings(connA.agent.GetLocalCandidates()))
 		assert.NotEqual(t, connBFirstCandidates, generateCandidateAddressStrings(connB.agent.GetLocalCandidates()))
 

external_ip_mapper_test.go

@@ -189,15 +189,15 @@ func TestExternalIPMapper(t *testing.T) {
 		assert.Nil(t, m, "should be nil")
 	})
 
-	t.Run("newExternalIPMapper with inplicit and explicit local IP", func(t *testing.T) {
-		// Mixing inpicit and explicit local IPs not allowed
+	t.Run("newExternalIPMapper with implicit and explicit local IP", func(t *testing.T) {
+		// Mixing implicit and explicit local IPs not allowed
 		_, err := newExternalIPMapper(CandidateTypeUnspecified, []string{
 			"1.2.3.4",
 			"1.2.3.5/10.0.0.1",
 		})
 		assert.Error(t, err, "should fail")
 
-		// Mixing inpicit and explicit local IPs not allowed
+		// Mixing implicit and explicit local IPs not allowed
 		_, err = newExternalIPMapper(CandidateTypeUnspecified, []string{
 			"1.2.3.5/10.0.0.1",
 			"1.2.3.4",
@@ -226,7 +226,7 @@ func TestExternalIPMapper(t *testing.T) {
 		assert.Equal(t, "1.2.3.4", extIP.String(), "should match")
 
 		// find external IPv6
-		extIP, err = m.findExternalIP("fe80::0001") // use '0001' instead of '1' on purpse
+		extIP, err = m.findExternalIP("fe80::0001") // use '0001' instead of '1' on purpose
 		assert.NoError(t, err, "should succeed")
 		assert.Equal(t, "2200::1", extIP.String(), "should match")
 
@@ -263,11 +263,11 @@ func TestExternalIPMapper(t *testing.T) {
 		assert.Error(t, err, "should fail")
 
 		// find external IPv6
-		extIP, err = m.findExternalIP("fe80::0001") // use '0001' instead of '1' on purpse
+		extIP, err = m.findExternalIP("fe80::0001") // use '0001' instead of '1' on purpose
 		assert.NoError(t, err, "should succeed")
 		assert.Equal(t, "2200::1", extIP.String(), "should match")
 
-		extIP, err = m.findExternalIP("fe80::0002") // use '0002' instead of '2' on purpse
+		extIP, err = m.findExternalIP("fe80::0002") // use '0002' instead of '2' on purpose
 		assert.NoError(t, err, "should succeed")
 		assert.Equal(t, "2200::2", extIP.String(), "should match")
 

ice.go

@@ -52,13 +52,13 @@ func (c ConnectionState) String() string {
 type GatheringState int
 
 const (
-	// GatheringStateNew indicates candidate gatering is not yet started
+	// GatheringStateNew indicates candidate gathering is not yet started
 	GatheringStateNew GatheringState = iota + 1
 
-	// GatheringStateGathering indicates candidate gatering is ongoing
+	// GatheringStateGathering indicates candidate gathering is ongoing
 	GatheringStateGathering
 
-	// GatheringStateComplete indicates candidate gatering has been completed
+	// GatheringStateComplete indicates candidate gathering has been completed
 	GatheringStateComplete
 )
 

stats.go

@@ -104,7 +104,7 @@ type CandidatePairStats struct {
 	// ResponsesReceived represents the total number of connectivity check responses received.
 	ResponsesReceived uint64
 
-	// ResponsesSent epresents the total number of connectivity check responses sent.
+	// ResponsesSent represents the total number of connectivity check responses sent.
 	// Since we cannot distinguish connectivity check requests and consent requests,
 	// all responses are counted.
 	ResponsesSent uint64

tcptype.go

@@ -3,7 +3,7 @@ package ice
 import "strings"
 
 // TCPType is the type of ICE TCP candidate as described in
-// ttps://tools.ietf.org/html/rfc6544#section-4.5
+// https://tools.ietf.org/html/rfc6544#section-4.5
 type TCPType int
 
 const (