module net

const is_windows = true

// WsaError is all of the socket errors that WSA provides from WSAGetLastError
pub enum WsaError {
	//
	// MessageId: WSAEINTR
	//
	// MessageText:
	//
	// A blocking operation was interrupted by a call to WSACancelBlockingCall.
	//
	wsaeintr                    = 10004
	//
	// MessageId: WSAEBADF
	//
	// MessageText:
	//
	// The file handle supplied is not valid.
	//
	wsaebadf                    = 10009
	//
	// MessageId: WSAEACCES
	//
	// MessageText:
	//
	// An attempt was made to access a socket in a way forbidden by its access permissions.
	//
	wsaeacces                   = 10013
	//
	// MessageId: WSAEFAULT
	//
	// MessageText:
	//
	// The system detected an invalid pointer address in attempting to use a pointer argument in a call.
	//
	wsaefault                   = 10014
	//
	// MessageId: WSAEINVAL
	//
	// MessageText:
	//
	// An invalid argument was supplied.
	//
	wsaeinval                   = 10022
	//
	// MessageId: WSAEMFILE
	//
	// MessageText:
	//
	// Too many open sockets.
	//
	wsaemfile                   = 10024
	//
	// MessageId: WSAEWOULDBLOCK
	//
	// MessageText:
	//
	// A non-blocking socket operation could not be completed immediately.
	//
	wsaewouldblock              = 10035
	//
	// MessageId: WSAEINPROGRESS
	//
	// MessageText:
	//
	// A blocking operation is currently executing.
	//
	wsaeinprogress              = 10036
	//
	// MessageId: WSAEALREADY
	//
	// MessageText:
	//
	// An operation was attempted on a non-blocking socket that already had an operation in progress.
	//
	wsaealready                 = 10037
	//
	// MessageId: WSAENOTSOCK
	//
	// MessageText:
	//
	// An operation was attempted on something that is not a socket.
	//
	wsaenotsock                 = 10038
	//
	// MessageId: WSAEDESTADDRREQ
	//
	// MessageText:
	//
	// A required address was omitted from an operation on a socket.
	//
	wsaedestaddrreq             = 10039
	//
	// MessageId: WSAEMSGSIZE
	//
	// MessageText:
	//
	// A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself.
	//
	wsaemsgsize                 = 10040
	//
	// MessageId: WSAEPROTOTYPE
	//
	// MessageText:
	//
	// A protocol was specified in the socket function call that does not support the semantics of the socket type requested.
	//
	wsaeprototype               = 10041
	//
	// MessageId: WSAENOPROTOOPT
	//
	// MessageText:
	//
	// An unknown, invalid, or unsupported option or level was specified in a getsockopt or setsockopt call.
	//
	wsaenoprotoopt              = 10042
	//
	// MessageId: WSAEPROTONOSUPPORT
	//
	// MessageText:
	//
	// The requested protocol has not been configured into the system, or no implementation for it exists.
	//
	wsaeprotonosupport          = 10043
	//
	// MessageId: WSAESOCKTNOSUPPORT
	//
	// MessageText:
	//
	// The support for the specified socket type does not exist in this address family.
	//
	wsaesocktnosupport          = 10044
	//
	// MessageId: WSAEOPNOTSUPP
	//
	// MessageText:
	//
	// The attempted operation is not supported for the type of object referenced.
	//
	wsaeopnotsupp               = 10045
	//
	// MessageId: WSAEPFNOSUPPORT
	//
	// MessageText:
	//
	// The protocol family has not been configured into the system or no implementation for it exists.
	//
	wsaepfnosupport             = 10046
	//
	// MessageId: WSAEAFNOSUPPORT
	//
	// MessageText:
	//
	// An address incompatible with the requested protocol was used.
	//
	wsaeafnosupport             = 10047
	//
	// MessageId: WSAEADDRINUSE
	//
	// MessageText:
	//
	// Only one usage of each socket address (protocol/network address/port) is normally permitted.
	//
	wsaeaddrinuse               = 10048
	//
	// MessageId: WSAEADDRNOTAVAIL
	//
	// MessageText:
	//
	// The requested address is not valid in its context.
	//
	wsaeaddrnotavail            = 10049
	//
	// MessageId: WSAENETDOWN
	//
	// MessageText:
	//
	// A socket operation encountered a dead network.
	//
	wsaenetdown                 = 10050
	//
	// MessageId: WSAENETUNREACH
	//
	// MessageText:
	//
	// A socket operation was attempted to an unreachable network.
	//
	wsaenetunreach              = 10051
	//
	// MessageId: WSAENETRESET
	//
	// MessageText:
	//
	// The connection has been broken due to keep-alive activity detecting a failure while the operation was in progress.
	//
	wsaenetreset                = 10052
	//
	// MessageId: WSAECONNABORTED
	//
	// MessageText:
	//
	// An established connection was aborted by the software in your host machine.
	//
	wsaeconnaborted             = 10053
	//
	// MessageId: WSAECONNRESET
	//
	// MessageText:
	//
	// An existing connection was forcibly closed by the remote host.
	//
	wsaeconnreset               = 10054
	//
	// MessageId: WSAENOBUFS
	//
	// MessageText:
	//
	// An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
	//
	wsaenobufs                  = 10055
	//
	// MessageId: WSAEISCONN
	//
	// MessageText:
	//
	// A connect request was made on an already connected socket.
	//
	wsaeisconn                  = 10056
	//
	// MessageId: WSAENOTCONN
	//
	// MessageText:
	//
	// A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied.
	//
	wsaenotconn                 = 10057
	//
	// MessageId: WSAESHUTDOWN
	//
	// MessageText:
	//
	// A request to send or receive data was disallowed because the socket had already been shut down in that direction with a previous shutdown call.
	//
	wsaeshutdown                = 10058
	//
	// MessageId: WSAETOOMANYREFS
	//
	// MessageText:
	//
	// Too many references to some kernel object.
	//
	wsaetoomanyrefs             = 10059
	//
	// MessageId: WSAETIMEDOUT
	//
	// MessageText:
	//
	// A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
	//
	wsaetimedout                = 10060
	//
	// MessageId: WSAECONNREFUSED
	//
	// MessageText:
	//
	// No connection could be made because the target machine actively refused it.
	//
	wsaeconnrefused             = 10061
	//
	// MessageId: WSAELOOP
	//
	// MessageText:
	//
	// Cannot translate name.
	//
	wsaeloop                    = 10062
	//
	// MessageId: WSAENAMETOOLONG
	//
	// MessageText:
	//
	// Name component or name was too long.
	//
	wsaenametoolong             = 10063
	//
	// MessageId: WSAEHOSTDOWN
	//
	// MessageText:
	//
	// A socket operation failed because the destination host was down.
	//
	wsaehostdown                = 10064
	//
	// MessageId: WSAEHOSTUNREACH
	//
	// MessageText:
	//
	// A socket operation was attempted to an unreachable host.
	//
	wsaehostunreach             = 10065
	//
	// MessageId: WSAENOTEMPTY
	//
	// MessageText:
	//
	// Cannot remove a directory that is not empty.
	//
	wsaenotempty                = 10066
	//
	// MessageId: WSAEPROCLIM
	//
	// MessageText:
	//
	// A Windows Sockets implementation may have a limit on the number of applications that may use it simultaneously.
	//
	wsaeproclim                 = 10067
	//
	// MessageId: WSAEUSERS
	//
	// MessageText:
	//
	// Ran out of quota.
	//
	wsaeusers                   = 10068
	//
	// MessageId: WSAEDQUOT
	//
	// MessageText:
	//
	// Ran out of disk quota.
	//
	wsaedquot                   = 10069
	//
	// MessageId: WSAESTALE
	//
	// MessageText:
	//
	// File handle reference is no longer available.
	//
	wsaestale                   = 10070
	//
	// MessageId: WSAEREMOTE
	//
	// MessageText:
	//
	// Item is not available locally.
	//
	wsaeremote                  = 10071
	//
	// MessageId: WSASYSNOTREADY
	//
	// MessageText:
	//
	// WSAStartup cannot function at this time because the underlying system it uses to provide network services is currently unavailable.
	//
	wsasysnotready              = 10091
	//
	// MessageId: WSAVERNOTSUPPORTED
	//
	// MessageText:
	//
	// The Windows Sockets version requested is not supported.
	//
	wsavernotsupported          = 10092
	//
	// MessageId: WSANOTINITIALISED
	//
	// MessageText:
	//
	// Either the application has not called WSAStartup, or WSAStartup failed.
	//
	wsanotinitialised           = 10093
	//
	// MessageId: WSAEDISCON
	//
	// MessageText:
	//
	// Returned by WSARecv or WSARecvFrom to indicate the remote party has initiated a graceful shutdown sequence.
	//
	wsaediscon                  = 10101
	//
	// MessageId: WSAENOMORE
	//
	// MessageText:
	//
	// No more results can be returned by WSALookupServiceNext.
	//
	wsaenomore                  = 10102
	//
	// MessageId: WSAECANCELLED
	//
	// MessageText:
	//
	// A call to WSALookupServiceEnd was made while this call was still processing. The call has been canceled.
	//
	wsaecancelled               = 10103
	//
	// MessageId: WSAEINVALIDPROCTABLE
	//
	// MessageText:
	//
	// The procedure call table is invalid.
	//
	wsaeinvalidproctable        = 10104
	//
	// MessageId: WSAEINVALIDPROVIDER
	//
	// MessageText:
	//
	// The requested service provider is invalid.
	//
	wsaeinvalidprovider         = 10105
	//
	// MessageId: WSAEPROVIDERFAILEDINIT
	//
	// MessageText:
	//
	// The requested service provider could not be loaded or initialized.
	//
	wsaeproviderfailedinit      = 10106
	//
	// MessageId: WSASYSCALLFAILURE
	//
	// MessageText:
	//
	// A system call has failed.
	//
	wsasyscallfailure           = 10107
	//
	// MessageId: WSASERVICE_NOT_FOUND
	//
	// MessageText:
	//
	// No such service is known. The service cannot be found in the specified name space.
	//
	wsaservice_not_found        = 10108
	//
	// MessageId: WSATYPE_NOT_FOUND
	//
	// MessageText:
	//
	// The specified class was not found.
	//
	wsatype_not_found           = 10109
	//
	// MessageId: WSA_E_NO_MORE
	//
	// MessageText:
	//
	// No more results can be returned by WSALookupServiceNext.
	//
	wsa_e_no_more               = 10110
	//
	// MessageId: WSA_E_CANCELLED
	//
	// MessageText:
	//
	// A call to WSALookupServiceEnd was made while this call was still processing. The call has been canceled.
	//
	wsa_e_cancelled             = 10111
	//
	// MessageId: WSAEREFUSED
	//
	// MessageText:
	//
	// A database query failed because it was actively refused.
	//
	wsaerefused                 = 10112
	//
	// MessageId: WSAHOST_NOT_FOUND
	//
	// MessageText:
	//
	// No such host is known.
	//
	wsahost_not_found           = 11001
	//
	// MessageId: WSATRY_AGAIN
	//
	// MessageText:
	//
	// This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.
	//
	wsatry_again                = 11002
	//
	// MessageId: WSANO_RECOVERY
	//
	// MessageText:
	//
	// A non-recoverable error occurred during a database lookup.
	//
	wsano_recovery              = 11003
	//
	// MessageId: WSANO_DATA
	//
	// MessageText:
	//
	// The requested name is valid, but no data of the requested type was found.
	//
	wsano_data                  = 11004
	//
	// MessageId: WSA_QOS_RECEIVERS
	//
	// MessageText:
	//
	// At least one reserve has arrived.
	//
	wsa_qos_receivers           = 11005
	//
	// MessageId: WSA_QOS_SENDERS
	//
	// MessageText:
	//
	// At least one path has arrived.
	//
	wsa_qos_senders             = 11006
	//
	// MessageId: WSA_QOS_NO_SENDERS
	//
	// MessageText:
	//
	// There are no senders.
	//
	wsa_qos_no_senders          = 11007
	//
	// MessageId: WSA_QOS_NO_RECEIVERS
	//
	// MessageText:
	//
	// There are no receivers.
	//
	wsa_qos_no_receivers        = 11008
	//
	// MessageId: WSA_QOS_REQUEST_CONFIRMED
	//
	// MessageText:
	//
	// Reserve has been confirmed.
	//
	wsa_qos_request_confirmed   = 11009
	//
	// MessageId: WSA_QOS_ADMISSION_FAILURE
	//
	// MessageText:
	//
	// Error due to lack of resources.
	//
	wsa_qos_admission_failure   = 11010
	//
	// MessageId: WSA_QOS_POLICY_FAILURE
	//
	// MessageText:
	//
	// Rejected for administrative reasons - bad credentials.
	//
	wsa_qos_policy_failure      = 11011
	//
	// MessageId: WSA_QOS_BAD_STYLE
	//
	// MessageText:
	//
	// Unknown or conflicting style.
	//
	wsa_qos_bad_style           = 11012
	//
	// MessageId: WSA_QOS_BAD_OBJECT
	//
	// MessageText:
	//
	// Problem with some part of the filterspec or providerspecific buffer in general.
	//
	wsa_qos_bad_object          = 11013
	//
	// MessageId: WSA_QOS_TRAFFIC_CTRL_ERROR
	//
	// MessageText:
	//
	// Problem with some part of the flowspec.
	//
	wsa_qos_traffic_ctrl_error  = 11014
	//
	// MessageId: WSA_QOS_GENERIC_ERROR
	//
	// MessageText:
	//
	// General QOS error.
	//
	wsa_qos_generic_error       = 11015
	//
	// MessageId: WSA_QOS_ESERVICETYPE
	//
	// MessageText:
	//
	// An invalid or unrecognized service type was found in the flowspec.
	//
	wsa_qos_eservicetype        = 11016
	//
	// MessageId: WSA_QOS_EFLOWSPEC
	//
	// MessageText:
	//
	// An invalid or inconsistent flowspec was found in the QOS structure.
	//
	wsa_qos_eflowspec           = 11017
	//
	// MessageId: WSA_QOS_EPROVSPECBUF
	//
	// MessageText:
	//
	// Invalid QOS provider-specific buffer.
	//
	wsa_qos_eprovspecbuf        = 11018
	//
	// MessageId: WSA_QOS_EFILTERSTYLE
	//
	// MessageText:
	//
	// An invalid QOS filter style was used.
	//
	wsa_qos_efilterstyle        = 11019
	//
	// MessageId: WSA_QOS_EFILTERTYPE
	//
	// MessageText:
	//
	// An invalid QOS filter type was used.
	//
	wsa_qos_efiltertype         = 11020
	//
	// MessageId: WSA_QOS_EFILTERCOUNT
	//
	// MessageText:
	//
	// An incorrect number of QOS FILTERSPECs were specified in the FLOWDESCRIPTOR.
	//
	wsa_qos_efiltercount        = 11021
	//
	// MessageId: WSA_QOS_EOBJLENGTH
	//
	// MessageText:
	//
	// An object with an invalid ObjectLength field was specified in the QOS provider-specific buffer.
	//
	wsa_qos_eobjlength          = 11022
	//
	// MessageId: WSA_QOS_EFLOWCOUNT
	//
	// MessageText:
	//
	// An incorrect number of flow descriptors was specified in the QOS structure.
	//
	wsa_qos_eflowcount          = 11023
	//
	// MessageId: WSA_QOS_EUNKOWNPSOBJ
	//
	// MessageText:
	//
	// An unrecognized object was found in the QOS provider-specific buffer.
	//
	wsa_qos_eunkownpsobj        = 11024
	//
	// MessageId: WSA_QOS_EPOLICYOBJ
	//
	// MessageText:
	//
	// An invalid policy object was found in the QOS provider-specific buffer.
	//
	wsa_qos_epolicyobj          = 11025
	//
	// MessageId: WSA_QOS_EFLOWDESC
	//
	// MessageText:
	//
	// An invalid QOS flow descriptor was found in the flow descriptor list.
	//
	wsa_qos_eflowdesc           = 11026
	//
	// MessageId: WSA_QOS_EPSFLOWSPEC
	//
	// MessageText:
	//
	// An invalid or inconsistent flowspec was found in the QOS provider specific buffer.
	//
	wsa_qos_epsflowspec         = 11027
	//
	// MessageId: WSA_QOS_EPSFILTERSPEC
	//
	// MessageText:
	//
	// An invalid FILTERSPEC was found in the QOS provider-specific buffer.
	//
	wsa_qos_epsfilterspec       = 11028
	//
	// MessageId: WSA_QOS_ESDMODEOBJ
	//
	// MessageText:
	//
	// An invalid shape discard mode object was found in the QOS provider specific buffer.
	//
	wsa_qos_esdmodeobj          = 11029
	//
	// MessageId: WSA_QOS_ESHAPERATEOBJ
	//
	// MessageText:
	//
	// An invalid shaping rate object was found in the QOS provider-specific buffer.
	//
	wsa_qos_eshaperateobj       = 11030
	//
	// MessageId: WSA_QOS_RESERVED_PETYPE
	//
	// MessageText:
	//
	// A reserved policy element was found in the QOS provider-specific buffer.
	//
	wsa_qos_reserved_petype     = 11031
	//
	// MessageId: WSA_SECURE_HOST_NOT_FOUND
	//
	// MessageText:
	//
	// No such host is known securely.
	//
	wsa_secure_host_not_found   = 11032
	//
	// MessageId: WSA_IPSEC_NAME_POLICY_ERROR
	//
	// MessageText:
	//
	// Name based IPSEC policy could not be added.
	//
	wsa_ipsec_name_policy_error = 11033
}

// wsa_error casts an int to its WsaError value
pub fn wsa_error(code int) WsaError {
	return unsafe { WsaError(code) }
}

const (
	error_ewouldblock = WsaError.wsaewouldblock
	error_einprogress = WsaError.wsaeinprogress
)

// Link to Winsock library
#flag -lws2_32
#include <winsock2.h>
#include <ws2tcpip.h>

// Constants that windows needs
const (
	fionbio      = C.FIONBIO
	msg_nosignal = 0
	wsa_v22      = 0x202 // C.MAKEWORD(2, 2)
)

// Error code returns the last socket error
fn error_code() int {
	return C.WSAGetLastError()
}

struct C.WSAData {
mut:
	wVersion       u16
	wHighVersion   u16
	szDescription  [257]u8
	szSystemStatus [129]u8
	iMaxSockets    u16
	iMaxUdpDg      u16
	lpVendorInfo   &u8
}

fn init() {
	mut wsadata := C.WSAData{
		lpVendorInfo: 0
	}
	res := C.WSAStartup(net.wsa_v22, &wsadata)
	if res != 0 {
		panic('socket: WSAStartup failed')
	}
}