pub type Reason {
  /// from `connect`
  Timeout
  /// from `send`
  Closed

  /// Address already in use
  Eaddrinuse
  /// Cannot assign requested address
  Eaddrnotavail
  /// Address family not supported by protocol family
  Eafnosupport
  /// Operation already in progress
  Ealready
  /// Software caused connection abort
  Econnaborted
  /// Connection refused
  Econnrefused
  /// Connection reset by peer
  Econnreset
  /// Destination address required
  Edestaddrreq
  /// Host is down
  Ehostdown
  /// Host is unreachable
  Ehostunreach
  /// Operation now in progress
  Einprogress
  /// Socket is already connected
  Eisconn
  /// Message too long
  Emsgsize
  /// Network is down
  Enetdown
  /// Network is unreachable
  Enetunreach
  /// Package not installed
  Enopkg
  /// Bad protocol option
  Enoprotoopt
  /// Socket is not connected
  Enotconn
  /// Inappropriate device for ioctl
  Enotty
  /// Socket operation on non-socket
  Enotsock
  /// Protocol error
  Eproto
  /// Protocol not supported
  Eprotonosupport
  /// Wrong protocol type for socket
  Eprototype
  /// Socket type not supported
  Esocktnosupport
  /// Connection timed out
  Etimedout
  /// Operation would block
  Ewouldblock
  /// Invalid exchange
  Exbadport
  /// Invalid sequence number
  Exbadseq
  /// Permission denied
  Eacces
  /// Resource temporarily unavailable
  Eagain
  /// Bad file number
  Ebadf
  /// Not a data message
  Ebadmsg
  /// File busy
  Ebusy
  /// Resource deadlock avoided
  Edeadlk
  /// Resource deadlock avoided
  Edeadlock
  /// Disk quota exceeded
  Edquot
  /// File already exists
  Eexist
  /// Bad address in system call argument
  Efault
  /// File too large
  Efbig
  /// Inappropriate file type or format
  Eftype
  /// Interrupted system call
  Eintr
  /// Invalid argument
  Einval
  /// I/O error
  Eio
  /// Illegal operation on a directory
  Eisdir
  /// Too many levels of symbolic links
  Eloop
  /// Too many open files
  Emfile
  /// Too many links
  Emlink
  /// Multihop attempted
  Emultihop
  /// Filename too long
  Enametoolong
  /// File table overflow
  Enfile
  /// No buffer space available
  Enobufs
  /// No such device
  Enodev
  /// No locks available
  Enolck
  /// Link has been severed
  Enolink
  /// No such file or directory
  Enoent
  /// Not enough memory
  Enomem
  /// No space left on device
  Enospc
  /// Out of stream resources or not a stream device
  Enosr
  /// Not a stream device
  Enostr
  /// Function not implemented
  Enosys
  /// Block device required
  Enotblk
  /// Not a directory
  Enotdir
  /// Operation not supported
  Enotsup
  /// No such device or address
  Enxio
  /// Operation not supported on socket
  Eopnotsupp
  /// Value too large for defined data type
  Eoverflow
  /// Not owner
  Eperm
  /// Broken pipe
  Epipe
  /// Math result unrepresentable
  Erange
  /// Read-only filesystem
  Erofs
  /// Invalid seek
  Espipe
  /// No such process
  Esrch
  /// Stale remote file handle
  Estale
  /// Text file or pseudo-device busy
  Etxtbsy
  /// Cross-device link
  Exdev
}

pub fn to_string(reason: Reason) -> String {
  case reason {
    Closed -> "Connection closed (closed)"
    Eacces -> "Permission denied (eacces)"
    Eaddrinuse -> "Address already in use (eaddrinuse)"
    Eaddrnotavail -> "Cannot assign requested address (eaddrnotavail)"
    Eafnosupport ->
      "Address family not supported by protocol family (eafnosupport)"
    Eagain -> "Resource temporarily unavailable (eagain)"
    Ealready -> "Operation already in progress (ealready)"
    Ebadf -> "Bad file number (ebadf)"
    Ebadmsg -> "Not a data message (ebadmsg)"
    Ebusy -> "File busy (ebusy)"
    Econnaborted -> "Software caused connection abort (econnaborted)"
    Econnrefused -> "Connection refused (econnrefused)"
    Econnreset -> "Connection reset by peer (econnreset)"
    Edeadlk -> "Resource deadlock avoided (edeadlk)"
    Edeadlock -> "Resource deadlock avoided (edeadlock)"
    Edestaddrreq -> "Destination address required (edestaddrreq)"
    Edquot -> "Disk quota exceeded (edquot)"
    Eexist -> "File already exists (eexist)"
    Efault -> "Bad address in system call argument (efault)"
    Efbig -> "File too large (efbig)"
    Eftype -> "Inappropriate file type or format (eftype)"
    Ehostdown -> "Host is down (ehostdown)"
    Ehostunreach -> "Host is unreachable (ehostunreach)"
    Einprogress -> "Operation now in progress (einprogress)"
    Eintr -> "Interrupted system call (eintr)"
    Einval -> "Invalid argument (einval)"
    Eio -> "I/O error (eio)"
    Eisconn -> "Socket is already connected (eisconn)"
    Eisdir -> "Illegal operation on a directory (eisdir)"
    Eloop -> "Too many levels of symbolic links (eloop)"
    Emfile -> "Too many open files (emfile)"
    Emlink -> "Too many links (emlink)"
    Emsgsize -> "Message too long (emsgsize)"
    Emultihop -> "Multihop attempted (emultihop)"
    Enametoolong -> "Filename too long (enametoolong)"
    Enetdown -> "Network is down (enetdown)"
    Enetunreach -> "Network is unreachable (enetunreach)"
    Enfile -> "File table overflow (enfile)"
    Enobufs -> "No buffer space available (enobufs)"
    Enodev -> "No such device (enodev)"
    Enoent -> "No such file or directory (enoent)"
    Enolck -> "No locks available (enolck)"
    Enolink -> "Link has been severed (enolink)"
    Enomem -> "Not enough memory (enomem)"
    Enopkg -> "Package not installed (enopkg)"
    Enoprotoopt -> "Bad protocol option (enoprotoopt)"
    Enospc -> "No space left on device (enospc)"
    Enosr -> "Out of stream resources or not a stream device (enosr)"
    Enostr -> "Not a stream device (enostr)"
    Enosys -> "Function not implemented (enosys)"
    Enotblk -> "Block device required (enotblk)"
    Enotconn -> "Socket is not connected (enotconn)"
    Enotdir -> "Not a directory (enotdir)"
    Enotsock -> "Socket operation on non-socket (enotsock)"
    Enotsup -> "Operation not supported (enotsup)"
    Enotty -> "Inappropriate device for ioctl (enotty)"
    Enxio -> "No such device or address (enxio)"
    Eopnotsupp -> "Operation not supported on socket (eopnotsupp)"
    Eoverflow -> "Value too large for defined data type (eoverflow)"
    Eperm -> "Not owner (eperm)"
    Epipe -> "Broken pipe (epipe)"
    Eproto -> "Protocol error (eproto)"
    Eprotonosupport -> "Protocol not supported (eprotonosupport)"
    Eprototype -> "Wrong protocol type for socket (eprototype)"
    Erange -> "Math result unrepresentable (erange)"
    Erofs -> "Read-only filesystem (erofs)"
    Esocktnosupport -> "Socket type not supported (esocktnosupport)"
    Espipe -> "Invalid seek (espipe)"
    Esrch -> "No such process (esrch)"
    Estale -> "Stale remote file handle (estale)"
    Etimedout -> "Connection timed out (etimedout)"
    Etxtbsy -> "Text file or pseudo-device busy (etxtbsy)"
    Ewouldblock -> "Operation would block (ewouldblock)"
    Exbadport -> "Invalid exchange (exbadport)"
    Exbadseq -> "Invalid sequence number (exbadseq)"
    Exdev -> "Cross-device link (exdev)"
    Timeout -> "Operation timed out (timeout)"
  }
}