quic: remove go1.21 build constraint

The x/net go.mod now depends on go1.23.

Change-Id: I24960949d84753f84f75fbdc97b7dfb92191a4d2
Reviewed-on: https://go-review.googlesource.com/c/net/+/664295
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Auto-Submit: Damien Neil <dneil@google.com>

quic/ack_delay.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/ack_delay_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/acks.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/acks_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/atomic_bits.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "sync/atomic"

quic/bench_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/config.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/config_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "testing"

quic/congestion_reno.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/congestion_reno_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_async_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_close.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_close_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_flow.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_flow_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_id.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_id_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_loss.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "fmt"

quic/conn_loss_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_recv.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_recv_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_send.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_send_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_streams.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_streams_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/conn_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/crypto_stream.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 // "Implementations MUST support buffering at least 4096 bytes of data

quic/crypto_stream_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/dgram.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/endpoint.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/endpoint_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/errors.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/files_test.go

@@ -1,51 +0,0 @@
-// Copyright 2023 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build go1.21
-
-package quic
-
-import (
-	"bytes"
-	"os"
-	"strings"
-	"testing"
-)
-
-// TestFiles checks that every file in this package has a build constraint on Go 1.21.
-//
-// The QUIC implementation depends on crypto/tls features added in Go 1.21,
-// so there's no point in trying to build on anything older.
-//
-// Drop this test when the x/net go.mod depends on 1.21 or newer.
-func TestFiles(t *testing.T) {
-	f, err := os.Open(".")
-	if err != nil {
-		t.Fatal(err)
-	}
-	names, err := f.Readdirnames(-1)
-	if err != nil {
-		t.Fatal(err)
-	}
-	for _, name := range names {
-		if !strings.HasSuffix(name, ".go") {
-			continue
-		}
-		b, err := os.ReadFile(name)
-		if err != nil {
-			t.Fatal(err)
-		}
-		// Check for copyright header while we're in here.
-		if !bytes.Contains(b, []byte("The Go Authors.")) {
-			t.Errorf("%v: missing copyright", name)
-		}
-		// doc.go doesn't need a build constraint.
-		if name == "doc.go" {
-			continue
-		}
-		if !bytes.Contains(b, []byte("//go:build go1.21")) {
-			t.Errorf("%v: missing constraint on go1.21", name)
-		}
-	}
-}

quic/frame_debug.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/gate.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "context"

quic/gate_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/gotraceback_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21 && unix
+//go:build unix
 
 package quic
 

quic/idle.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/idle_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/key_update_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/log.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/loss.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/loss_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/main_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/math.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 func abs[T ~int | ~int64](a T) T {

quic/pacer.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/pacer_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_codec_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_number.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 // A packetNumber is a QUIC packet number.

quic/packet_number_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_parser.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "golang.org/x/net/internal/quic/quicwire"

quic/packet_protection.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_protection_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/packet_writer.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/path.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "time"

quic/path_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/ping.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "time"

quic/ping_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "testing"

quic/pipe.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/pipe_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/qlog.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/qlog_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/queue.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "context"

quic/queue_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/quic.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/quic_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/rangeset.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 // A rangeset is a set of int64s, stored as an ordered list of non-overlapping,

quic/rangeset_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/retry.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/retry_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/rtt.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/rtt_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/sent_packet.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/sent_packet_list.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 // A sentPacketList is a ring buffer of sentPackets.

quic/sent_packet_list_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "testing"

quic/sent_packet_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "testing"

quic/sent_val.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 // A sentVal tracks sending some piece of information to the peer.

quic/sent_val_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "testing"

quic/stateless_reset.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/stateless_reset_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/stream.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/stream_limits.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/stream_limits_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/stream_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/tls.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/tls_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/tlsconfig_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/transport_params.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/transport_params_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/udp.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import "net/netip"

quic/udp_darwin.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21 && darwin
+//go:build darwin
 
 package quic
 

quic/udp_linux.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21 && linux
+//go:build linux
 
 package quic
 

quic/udp_msg.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21 && !quicbasicnet && (darwin || linux)
+//go:build !quicbasicnet && (darwin || linux)
 
 package quic
 

quic/udp_other.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21 && (quicbasicnet || !(darwin || linux))
+//go:build quicbasicnet || !(darwin || linux)
 
 package quic
 

quic/udp_packetconn.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/udp_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (

quic/version_test.go

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.21
-
 package quic
 
 import (