gtpv0

README

v0: GTPv0 in Golang

Package v0 provides simple and painless handling of GTPv0 protocol in pure Golang.

Getting Started

This package is still under construction. See the source codes for what you can do with the current implementation.

Creating a PDP Context as a client

NOT IMPLEMENTED YET!

Waiting for a PDP Context to be created as a server

NOT IMPLEMENTED YET!

Opening a U-Plane connection

NOT IMPLEMENTED YET!

Supported Features

The following Messages marked with "Yes" are currently available with their own useful constructors.

Even there are some missing Messages, you can create any kind of Message by using message.NewGeneric().

Messages

ID	Name	Supported
0	(Spare/Reserved)	-
1	Echo Request	Yes
2	Echo Response	Yes
3	Version Not Supported
4	Node Alive Request
5	Node Alive Response
6	Redirection Request
7	Redirection Response
8-15	(Spare/Reserved)	-
16	Create PDP Context Request	Yes
17	Create PDP Context Response	Yes
18	Update PDP Context Request	Yes
19	Update PDP Context Response	Yes
20	Delete PDP Context Request	Yes
21	Delete PDP Context Response	Yes
22	Create AA PDP Context Request
23	Create AA PDP Context Response
24	Delete AA PDP Context Request
25	Delete AA PDP Context Response
26	Error Indication
27	PDU Notification Request
28	PDU Notification Response
29	PDU Notification Reject Request
30	PDU Notification Reject Response
31	(Spare/Reserved)	-
32	Send Routeing Information for GPRS Request
33	Send Routeing Information for GPRS Response
34	Failure Report Request
35	Failure Report Response
36	Note MS GPRS Present Request
37	Note MS GPRS Present Response
38-47	(Spare/Reserved)	-
48	Identification Request
49	Identification Response
50	SGSN Context Request
51	SGSN Context Response
52	SGSN Context Acknowledge
53-239	(Spare/Reserved)	-
240	Data Record Transfer Request
241	Data Record Transfer Response
242-254	(Spare/Reserved)	-
255	T-PDU	Yes

Information Elements

The following Information Elements marked with "Yes" are currently available with their own useful constructors.

Even there are some missing IEs, you can create any kind of IEs by using ie.New() function or by initializing ie.IE directly.

ID	Name	Supported
0	(Spare/Reserved)	-
1	Cause	Yes
2	IMSI	Yes
3	Routeing Area Identity (RAI)	Yes
4	Temporary Logical Link Identity (TLLI)	Yes
5	Packet TMSI (P-TMSI)	Yes
6	Quality of Service (QoS) Profile	Yes
7	(Spare/Reserved)	-
8	Reordering Required	Yes
9	Authentication Triplet
10	(Spare/Reserved)	-
11	MAP Cause
12	P-TMSI Signature	Yes
13	MS Validated
14	Recovery	Yes
15	Selection mode	Yes
16	Flow Label Data I	Yes
17	Flow Label Signalling	Yes
18	Flow Label Data II	Yes
19	MS Not Reachable Reason	Yes
20-126	(Spare/Reserved)	-
127	Charging ID	Yes
128	End User Address	Yes
129	MM Context
130	PDP Context
131	Access Point Name	Yes
132	Protocol Configuration Options
133	GSN Address	Yes
134	MSISDN	Yes
135-250	(Spare/Reserved)	-
251	Charging Gateway Address	Yes
252-254	(Spare/Reserved)	-
255	Private Extension	Yes

Documentation

Overview

Package gtpv0 provides simple and painless handling of GTPv0 protocol in pure Golang.

This package is still under construction. The networking feature would be available in the future. Please see README.md for detailed usage of the APIs provided by this package.

https://github.com/wmnsk/go-gtp/blob/main/gtpv0/README.md

Index

• Constants

Constants

const (
	CauseRequestIMSI              uint8 = 0
	CauseRequestIMEI              uint8 = 1
	CauseRequestIMSIandIMEI       uint8 = 2
	CauseNoIdentityNeeded         uint8 = 3
	CauseRequestAccepted          uint8 = 128
	CauseNonExistent              uint8 = 192
	CauseInvalidMessageFormat     uint8 = 193
	CauseIMSINotKnown             uint8 = 194
	CauseMSIsGPRSDetached         uint8 = 195
	CauseMSIsNotGPRSResponding    uint8 = 196
	CauseMSRefuses                uint8 = 197
	CauseVersionNotSupported      uint8 = 198
	CauseNoResourcesAvailable     uint8 = 199
	CauseServiceNotSupported      uint8 = 200
	CauseMandatoryIEIncorrect     uint8 = 201
	CauseMandatoryIEMissing       uint8 = 202
	CauseOptionalIEIncorrect      uint8 = 203
	CauseSystemFailure            uint8 = 204
	CauseRoamingRestriction       uint8 = 205
	CausePTMSISignatureMismatch   uint8 = 206
	CauseGPRSConnectionSuspended  uint8 = 207
	CauseAuthenticationFailure    uint8 = 208
	CauseUserAuthenticationFailed uint8 = 209
)

Cause definitions.

const (
	PDPTypeETSI uint8 = iota | 0xf0
	PDPTypeIETF
)

PDP Type Organization definitions.

const (
	SelectionModeMSorNetworkProvidedAPNSubscribedVerified uint8 = iota | 0xf0
	SelectionModeMSProvidedAPNSubscriptionNotVerified
	SelectionModeNetworkProvidedAPNSubscriptionNotVerified
)

SelectionMode definitions.