Fix NewNick's comment

It wasn't updated after fixing https://github.com/fluffle/goirc/issues/108.

client/connection.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"context"
 	"crypto/tls"
-	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -13,7 +12,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/emersion/go-sasl"
+	sasl "github.com/emersion/go-sasl"
 	"github.com/fluffle/goirc/logging"
 	"github.com/fluffle/goirc/state"
 	"golang.org/x/net/proxy"
@@ -39,7 +38,7 @@ type Conn struct {
 
 	// I/O stuff to server
 	dialer      *net.Dialer
-	proxyDialer proxy.ContextDialer
+	proxyDialer proxy.Dialer
 	sock        net.Conn
 	io          *bufio.ReadWriter
 	in          chan *Line
@@ -109,7 +108,8 @@ type Config struct {
 	Sasl sasl.Client
 
 	// Replaceable function to customise the 433 handler's new nick.
-	// By default an underscore "_" is appended to the current nick.
+	// By default the current nick's last character is "incremented".
+	// See DefaultNewNick implementation below for details.
 	NewNick func(string) string
 
 	// Client->server ping frequency, in seconds. Defaults to 3m.
@@ -404,25 +404,13 @@ func (conn *Conn) internalConnect(ctx context.Context) error {
 	}
 
 	if conn.cfg.Proxy != "" {
-		proxyURL, err := url.Parse(conn.cfg.Proxy)
+		s, err := conn.dialProxy(ctx)
 		if err != nil {
+			logging.Info("irc.Connect(): Connecting via proxy %q: %v",
+				conn.cfg.Proxy, err)
 			return err
 		}
-		proxyDialer, err := proxy.FromURL(proxyURL, conn.dialer)
-		if err != nil {
-			return err
-		}
-		contextProxyDialer, ok := proxyDialer.(proxy.ContextDialer)
-		if !ok {
-			return errors.New("Dialer for proxy does not support context")
-		}
-		conn.proxyDialer = contextProxyDialer
-		logging.Info("irc.Connect(): Connecting to %s.", conn.cfg.Server)
-		if s, err := conn.proxyDialer.DialContext(ctx, "tcp", conn.cfg.Server); err == nil {
-			conn.sock = s
-		} else {
-			return err
-		}
+		conn.sock = s
 	} else {
 		logging.Info("irc.Connect(): Connecting to %s.", conn.cfg.Server)
 		if s, err := conn.dialer.DialContext(ctx, "tcp", conn.cfg.Server); err == nil {
@@ -446,6 +434,28 @@ func (conn *Conn) internalConnect(ctx context.Context) error {
 	return nil
 }
 
+// dialProxy handles dialling via a proxy
+func (conn *Conn) dialProxy(ctx context.Context) (net.Conn, error) {
+	proxyURL, err := url.Parse(conn.cfg.Proxy)
+	if err != nil {
+		return nil, fmt.Errorf("parsing url: %v", err)
+	}
+	proxyDialer, err := proxy.FromURL(proxyURL, conn.dialer)
+	if err != nil {
+		return nil, fmt.Errorf("creating dialer: %v", err)
+	}
+	conn.proxyDialer = proxyDialer
+	contextProxyDialer, ok := proxyDialer.(proxy.ContextDialer)
+	if ok {
+		logging.Info("irc.Connect(): Connecting to %s.", conn.cfg.Server)
+		return contextProxyDialer.DialContext(ctx, "tcp", conn.cfg.Server)
+	} else {
+		logging.Warn("Dialer for proxy does not support context, please implement DialContext")
+		logging.Info("irc.Connect(): Connecting to %s.", conn.cfg.Server)
+		return conn.proxyDialer.Dial("tcp", conn.cfg.Server)
+	}
+}
+
 // postConnect performs post-connection setup, for ease of testing.
 func (conn *Conn) postConnect(ctx context.Context, start bool) {
 	conn.io = bufio.NewReadWriter(

go.mod

@@ -2,8 +2,10 @@ module github.com/fluffle/goirc
 
 require (
 	github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead
+	github.com/fluffle/golog/logging v0.0.0-20180928190033-7d99e85061cb
+	github.com/golang/glog v1.0.0
 	github.com/golang/mock v1.5.0
-	golang.org/x/net v0.0.0-20210119194325-5f4716e94777
+	golang.org/x/net v0.18.0
 )
 
 go 1.13

go.sum

@@ -1,22 +1,57 @@
 github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead h1:fI1Jck0vUrXT8bnphprS1EoVRe2Q5CKCX8iDlpqjQ/Y=
 github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
+github.com/fluffle/golog/logging v0.0.0-20180928190033-7d99e85061cb h1:r//eMD/5sdzxVy34UP5fFvRWIL2L8QZtaDgVCKfVQLI=
+github.com/fluffle/golog/logging v0.0.0-20180928190033-7d99e85061cb/go.mod h1:w8+az2+kPHMcsaKnTnGapWTNToJK8BogkHiAncvqKsM=
+github.com/golang/glog v1.0.0 h1:nfP3RFugxnNRyKgeWd4oI1nYvXpxrx8ck8ZrcizshdQ=
+github.com/golang/glog v1.0.0/go.mod h1:EWib/APOK0SL3dFbYqvxE3UYd8E6s1ouQ7iEp/0LWV4=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.5.0 h1:jlYHihg//f7RRwuPfptm04yp4s7O6Kw8EZiVYIGcH0g=
 github.com/golang/mock v1.5.0/go.mod h1:CWnOUgYIOo4TcNZ0wHX3YZCqsaM1I1Jvs6v3mP3KVu8=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.15.0/go.mod h1:4ChreQoLWfG3xLDer1WdlH5NdlQ3+mwnQq1YTKY+72g=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
-golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g=
+golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.18.0 h1:mIYleuAkSbHh0tCv7RvjL3F6ZVbLjq4+R7zbOn3Kokg=
+golang.org/x/net v0.18.0/go.mod h1:/czyP5RqHAH4odGYxBJ1qz0+CE5WZ+2j1YgoEo8F2jQ=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.14.0/go.mod h1:TySc+nGkYR6qt8km8wUhuFRTVSMIX3XPR58y2lC8vww=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
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+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

state/nick.go

@@ -71,7 +71,7 @@ func (nk *nick) Nick() *Nick {
 		Host:     nk.host,
 		Name:     nk.name,
 		Modes:    nk.modes.Copy(),
-		Channels: make(map[string]*ChanPrivs),
+		Channels: make(map[string]*ChanPrivs, len(nk.chans)),
 	}
 	for c, cp := range nk.chans {
 		n.Channels[c.name] = cp.Copy()
@@ -157,6 +157,7 @@ func (nm *NickMode) Equals(other *NickMode) bool {
 }
 
 // Returns a string representing the nick. Looks like:
+//
 //	Nick: <nick name> e.g. CowMaster
 //	Hostmask: <ident@host> e.g. moo@cows.org
 //	Real Name: <real name> e.g. Steve "CowMaster" Bush
@@ -181,6 +182,7 @@ func (nk *nick) String() string {
 }
 
 // Returns a string representing the nick modes. Looks like:
+//
 //	+iwx
 func (nm *NickMode) String() string {
 	if nm == nil {

state/nick_test.go

@@ -1,6 +1,9 @@
 package state
 
-import "testing"
+import (
+	"fmt"
+	"testing"
+)
 
 func compareNick(t *testing.T, nk *nick) {
 	n := nk.Nick()
@@ -86,3 +89,30 @@ func TestNickParseModes(t *testing.T) {
 		t.Errorf("Modes not flipped correctly by ParseModes.")
 	}
 }
+
+func BenchmarkNickSingleChan(b *testing.B) {
+	nk := newNick("test1")
+	ch := newChannel("#test1")
+	cp := new(ChanPrivs)
+	nk.addChannel(ch, cp)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		nk.Nick()
+	}
+}
+
+func BenchmarkNickManyChan(b *testing.B) {
+	const numChans = 1000
+	nk := newNick("test1")
+	for i := 0; i < numChans; i++ {
+		ch := newChannel(fmt.Sprintf("#test%d", i))
+		cp := new(ChanPrivs)
+		nk.addChannel(ch, cp)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		nk.Nick()
+	}
+}