"math/rand"
	"net"
	"os"
	"os/exec"
	"testing"
	"time"
)

func TestTCPEcho(t *testing.T) {
	if target != "wasip1/wasm" {
		t.Skip()
	}

	// We're unable to use port 0 here (let the OS choose a spare port).
	// Although the WASM runtime accepts port 0, and the WASM module listens
	// successfully, there's no way for this test to query the selected port
	// so that it can connect to the WASM module. The WASM module itself

	stack_base uintptr
	stack_size uintptr
	tls_base   unsafe.Pointer
	tls_size   uintptr
	child_tid  unsafe.Pointer // *int64
	parent_tid *int64
	flags      int32
	pad_cgo_0  [4]byte
	rtp        *rtprio
	spare      [3]uintptr
}

type thread int64 // long

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp     uintptr
	ss_size   uintptr
	ss_flags  int32

	stack_base uintptr
	stack_size uintptr
	tls_base   unsafe.Pointer
	tls_size   uintptr
	child_tid  unsafe.Pointer // *int32
	parent_tid *int32
	flags      int32
	rtp        *rtprio
	spare      [3]uintptr
}

type thread int32 // long

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp    uintptr
	ss_size  uintptr
	ss_flags int32
}

	stack_base uintptr
	stack_size uintptr
	tls_base   unsafe.Pointer
	tls_size   uintptr
	child_tid  unsafe.Pointer // *int64
	parent_tid *int64
	flags      int32
	pad_cgo_0  [4]byte
	rtp        *rtprio
	spare      [3]uintptr
}

type thread int64 // long

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp     uintptr
	ss_size   uintptr
	ss_flags  int32

	stack_base uintptr
	stack_size uintptr
	tls_base   unsafe.Pointer
	tls_size   uintptr
	child_tid  unsafe.Pointer // *int32
	parent_tid *int32
	flags      int32
	rtp        *rtprio
	spare      [3]uintptr
}

type thread int32 // long

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp    uintptr
	ss_size  uintptr
	ss_flags int32
}

	stack_base uintptr
	stack_size uintptr
	tls_base   unsafe.Pointer
	tls_size   uintptr
	child_tid  unsafe.Pointer // *int64
	parent_tid *int64
	flags      int32
	pad_cgo_0  [4]byte
	rtp        *rtprio
	spare      [3]uintptr
}

type thread int64 // long

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp     uintptr
	ss_size   uintptr
	ss_flags  int32

		{"Stat_t.Dev", Field, 0},
		{"Stat_t.Flags", Field, 0},
		{"Stat_t.Gen", Field, 0},
		{"Stat_t.Gid", Field, 0},
		{"Stat_t.Ino", Field, 0},
		{"Stat_t.Lspare", Field, 0},
		{"Stat_t.Lspare0", Field, 2},
		{"Stat_t.Lspare1", Field, 2},
		{"Stat_t.Mode", Field, 0},
		{"Stat_t.Mtim", Field, 0},
		{"Stat_t.Mtim_ext", Field, 12},
		{"Stat_t.Mtimespec", Field, 0},
		{"Stat_t.Nlink", Field, 0},

	Type    int64
	Bsize   int64
	Frsize  int64
	Blocks  uint64
	Bfree   uint64
	Files   uint64
	Ffree   uint64
	Bavail  uint64
	Fsid    Fsid
	Namelen int64
	Flags   int64
	Spare   [5]int64
}

type TpacketHdr struct {
	Status  uint64
	Len     uint32
	Snaplen uint32
	Mac     uint16
	Net     uint16
	Sec     uint32
	Usec    uint32
	_       [4]byte
}

	Type    int32
	Bsize   int32
	Frsize  int32
	_       [4]byte
	Blocks  uint64
	Bfree   uint64
	Files   uint64
	Ffree   uint64
	Bavail  uint64
	Fsid    Fsid
	Namelen int32
	Flags   int32
	Spare   [5]int32
	_       [4]byte
}

type TpacketHdr struct {
	Status  uint32
	Len     uint32
	Snaplen uint32
	Mac     uint16
	Net     uint16
	Sec     uint32
	Usec    uint32
}

	Type    int64
	Bsize   int64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64
	Fsid    Fsid
	Namelen int64
	Frsize  int64
	Flags   int64
	Spare   [4]int64
}

type TpacketHdr struct {
	Status  uint64
	Len     uint32
	Snaplen uint32
	Mac     uint16
	Net     uint16
	Sec     uint32
	Usec    uint32
	_       [4]byte
}