sock.go

Documentation: github.com/tetratelabs/wazero/internal/wasip1

     1  package wasip1
     2  
     3  import "strconv"
     4  
     5  const (
     6  	SockAcceptName   = "sock_accept"
     7  	SockRecvName     = "sock_recv"
     8  	SockSendName     = "sock_send"
     9  	SockShutdownName = "sock_shutdown"
    10  )
    11  
    12  // SD Flags indicate which channels on a socket to shut down.
    13  // https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-sdflags-flagsu8
    14  const (
    15  	// SD_RD disables further receive operations.
    16  	SD_RD uint8 = 1 << iota //nolint
    17  	// SD_WR disables further send operations.
    18  	SD_WR
    19  )
    20  
    21  func SdFlagsString(sdflags int) string {
    22  	return flagsString(sdflagNames[:], sdflags)
    23  }
    24  
    25  var sdflagNames = [...]string{
    26  	"RD",
    27  	"WR",
    28  }
    29  
    30  // SI Flags are flags provided to sock_send. As there are currently no flags defined, it must be set to zero.
    31  // https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-siflags-u16
    32  
    33  func SiFlagsString(siflags int) string {
    34  	if siflags == 0 {
    35  		return ""
    36  	}
    37  	return strconv.Itoa(siflags)
    38  }
    39  
    40  // RI Flags are flags provided to sock_recv.
    41  // https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-riflags-flagsu16
    42  const (
    43  	// RI_RECV_PEEK returns the message without removing it from the socket's receive queue
    44  	RI_RECV_PEEK uint8 = 1 << iota //nolint
    45  	// RI_RECV_WAITALL on byte-stream sockets, block until the full amount of data can be returned.
    46  	RI_RECV_WAITALL
    47  )
    48  
    49  func RiFlagsString(riflags int) string {
    50  	return flagsString(riflagNames[:], riflags)
    51  }
    52  
    53  var riflagNames = [...]string{
    54  	"RECV_PEEK",
    55  	"RECV_WAITALL",
    56  }
    57  
    58  // RO Flags are flags returned by sock_recv.
    59  // https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-roflags-flagsu16
    60  const (
    61  	// RO_RECV_DATA_TRUNCATED is returned by sock_recv when message data has been truncated.
    62  	RO_RECV_DATA_TRUNCATED uint8 = 1 << iota //nolint
    63  )
    64  
    65  func RoFlagsString(roflags int) string {
    66  	return flagsString(roflagNames[:], roflags)
    67  }
    68  
    69  var roflagNames = [...]string{
    70  	"RECV_DATA_TRUNCATED",
    71  }
    72
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