NEX Common Types

Table of Contents

1. String
2. Buffer
3. qBuffer
4. List
5. DateTime
6. StationURL
7. Structure
8. Data
9. RVConnectionData

String

Type	Description
Uint16	Length (including null terminator)
Chars	Null terminated UTF-8 string

Buffer

Type	Description
Uint32	Length
Bytes	Data

qBuffer

Type	Description
Uint16	Length
Bytes	Data

List

Type	Description
Uint32	Number of entries
	Entries

Date Time

Type	Description
Uint64	Value

This is not a normal time stamp. Instead, it consists of a bunch of bit fields:

Bits	Description
0 - 38	Year
38 - 42	Month
42 - 47	Day
47 - 52	Hour
52 - 58	Minute
58 - 64	Second

Note: 0 refers to the most significant bit.

Station URL

Type	Description
String	Station URL

A station url contains the address and port of a server or client, along with a few parameters. The order of the fields is arbitrary. Here's an example of a station url: prudps:/stream=10;sid=1;CID=1;type=2;address=34.210.222.104;port=60101;PID=2

Field	Description
<protocol>	udp, prudp or prudps
stream	Stream type
sid	Stream id
CID	Connection id
type	Type
RVCID	Rendez-vous connection id
natm	NAT mapping
natf	NAT filtering
upnp	UPnP support (0 or 1)
pmp	PMP support (0 or 1)
probeinit	Probe request initiation
PRID	Probe request id
fastproberesponse	Fast probe response
NodeID	Node id

Structure

NEX v3.5.0 introduced a versioning system to structures. Before v3.5.0 their contents were just normally stored into the stream. However, starting with v3.5.0, structures are stored like this:

Type	Description
Uint8	Version
Uint32	Content length
	Content

Any Data Holder

NEX has a class that can hold any object derived from nn::nex::Data. When these are transmitted as part of request or response data, some meta data is sent along with them, so the other side can properly identify and decode the object.

Type	Description
String	Type name
Uint32	Length of data, including the next length field
Uint32	Length of data
	Object data

Rendez-Vous Connection Data (Structure)

Nintendo does not use any special protocols.

Type	Version	Name	Description
StationURL	Any	m_urlRegularProtocols	Server address (regular protocols)
List<byte>	Any	m_lstSpecialProtocols	Special protocols
StationURL	Any	m_urlSpecialProtocols	Server address (special protocols)
DateTime	V1	m_currentUTCTime	Time

Examples:

Game	Secure server
Friends	prudps:/stream=10;type=2;PID=2;port=60091;address=35.162.205.114;sid=1;CID=1
DKC:TF	prudps:/port=43221;CID=1;address=34.208.166.202;PID=2;stream=10;type=2;sid=1
MK8	prudps:/sid=1;port=59201;address=52.10.188.163;PID=2;stream=10;type=2;CID=1