package httptest

import (
	"bytes"
	"fmt"
	"io"
	"net/http"
	"net/textproto"
	"strconv"
	"strings"

	"golang.org/x/net/http/httpguts"
)

// ResponseRecorder is an implementation of [http.ResponseWriter] that
// records its mutations for later inspection in tests.
type ResponseRecorder struct {
	// Code is the HTTP response code set by WriteHeader.
	//

#include "textflag.h"

// Linux/ARM atomic operations.

// Because there is so much variation in ARM devices,
// the Linux kernel provides an appropriate compare-and-swap
// implementation at address 0xffff0fc0.  Caller sets:
//	R0 = old value
//	R1 = new value
//	R2 = addr
//	LR = return address
// The function returns with CS true if the swap happened.

//
// The two methods [Addr.Network] and [Addr.String] conventionally return strings
// that can be passed as the arguments to [Dial], but the exact form
// and meaning of the strings is up to the implementation.
type Addr interface {
	Network() string // name of the network (for example, "tcp", "udp")
	String() string  // string form of address (for example, "192.0.2.1:25", "[2001:db8::1]:80")
}

	Env []string
	// Files specifies the open files inherited by the new process. The
	// first three entries correspond to standard input, standard output, and
	// standard error. An implementation may support additional entries,
	// depending on the underlying operating system. A nil entry corresponds
	// to that file being closed when the process starts.
	// On Unix systems, StartProcess will change these File values

	}
	if fails > 0 {
		t.Logf("# of failed Dials: %v", fails)
	}
}

func TestTCPReadWriteAllocs(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		// The implementation of asynchronous cancelable
		// I/O on Plan 9 allocates memory.
		// See net/fd_io_plan9.go.
		t.Skipf("not supported on %s", runtime.GOOS)
	}

	ln, err := Listen("tcp", "127.0.0.1:0")
	if err != nil {

// Package io provides basic interfaces to I/O primitives.
// Its primary job is to wrap existing implementations of such primitives,
// such as those in package os, into shared public interfaces that
// abstract the functionality, plus some other related primitives.
//
// Because these interfaces and primitives wrap lower-level operations with
// various implementations, unless otherwise informed clients should not
// assume they are safe for parallel execution.

//
// Implementations of PublicSuffixList must be safe for concurrent use by
// multiple goroutines.
//
// An implementation that always returns "" is valid and may be useful for
// testing but it is not secure: it means that the HTTP server for foo.com can
// set a cookie for bar.com.
//
// A public suffix list implementation is in the package
// golang.org/x/net/publicsuffix.

			}
		}
	}
	return h
}

// Trivial error implementation, here to avoid importing errors.

// parseError is a trivial error implementation,
// defined here to avoid importing errors.
type parseError struct{ text string }

func (e *parseError) Error() string { return e.text }

// FNV-1a implementation. See Go's hash/fnv/fnv.go.
// Copied here for simplicity (can handle integers more directly)

CL 463097, CL 568198 - x/net CLs that implemented accepted proposal https://go.dev/issue/57953 for x/net/websocket; no need for rel note
many x/net CLs - work on accepted proposal https://go.dev/issue/58547 to add a QUIC implementation to x/net/quic
CL 514775 - implements a performance optimization for accepted proposal https://go.dev/issue/59488
CL 484995 - x/sys CL implements accepted proposal https://go.dev/issue/59537 to add x/sys/unix API

	}
	switch network {
	case "ip4":
		if ip := ip.To4(); ip != nil {
			return ip, true
		}
	case "ip6":
		if ip.IsLoopback() { // addressing scope of the loopback address depends on each implementation
			return nil, false
		}
		if ip := ip.To16(); ip != nil && ip.To4() == nil {
			return ip, true
		}
	default:
		if ip := ip.To4(); ip != nil {
			return ip, true
		}