| Internet Engineering Task Force | V.K. Gurbani, Ed. |
| Internet-Draft | Bell Laboratories, Alcatel-Lucent |
| Intended status: Informational | M. Bhardwaj |
| Expires: March 30, 2013 | Cisco Systems, Inc. |
| W. Roome | |
| Bell Laboratories, Alcatel-Lucent | |
| N. Zhang | |
| Neustar | |
| September 28, 2012 |
Interoperability testing of the Application- Layer Traffic Optimization (ALTO) Protocol
DOCNAME
The Application-Layer Traffic Optimization (ALTO) protocol is designed to allow entities with knowledge about the network infrastructure to export such information to applications that need to choose one or more endpoints to connect to among large sets of logically equivalent ones. This document provides a collection of messages that may be used to test the functionality and interoperability of an ALTO client and an ALTO server.
This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http:/⁠/⁠datatracker.ietf.org/⁠drafts/⁠current/⁠.
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 30, 2013.
Copyright (c) 2012 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http:/⁠/⁠trustee.ietf.org/⁠license-⁠info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
The Application-Layer Traffic Optimization (ALTO) protocol is designed to allow entities with knowledge about the network infrastructure to export such information to applications that need to choose one or more endpoints to connect to among large sets of logically equivalent ones.
This document contains a set of messages that may be used test the functionality and interoperability of an ALTO client and an ALTO server.
This document is informational and is NOT NORMATIVE on any aspects of the ALTO protocol. The normative behaviour of ALTO entities is prescribed in [I-D.ietf-alto-protocol].
The test messages are organized into several sections. The key ALTO services, including but not limited to, Information Resource Directory retrieval, retrieving network map and cost map, endpoint cost service, filtered network map service, filtered cost map service are provided as discrete test cases. Also included are errors associating with the ALTO request and the JSON payload.
While every effort has been made to catalogue representative test cases, this document does not attempt to codify every test case that arises in ALTO. The aim of the document is to focus on areas that highlight the key offerings of the ALTO protocol.
To uniformly interpret the contents of the ALTO messages, a sample topology is presented below. This topology is divided into a network map and a cost map. The network map contains a series of PIDs, a provider-defined network location identifier as specified in [I-D.ietf-alto-protocol].
PID IP Address Block
-------------------------------
mypid1 10.0.0.0/8, 15.0.0.0/8
mypid2 192.168.0.0/16
mypid3 192.168.10.0/24
peeringpid1 128.0.0.0/16
peeringpid2 130.0.0.0/16, 2001:DB8::/32
transitpid1 132.0.0.0/16
transitpid2 135.0.0.0/16
defaultpid 0.0.0.0/0, ::/0
Figure 1: Sample Network Map
A cost map corresponding to the above network map is shown below. The cost map defines path costs amongst sets of source and destination network locations. Each path cost is the end-to-end cost from the source to the destination.
Source Destination Cost Mode
PID PID Numerical Ordinal
---------------------------------------------
mypid1 mypid1 0 0
" mypid2 0 0
" mypid3 0 0
" peeringpid1 0 1
" peeringpid2 0 1
" transitpid1 5 4
" transitpid2 10 4
" defaultpid 4 5
mypid2 mypid1 0 0
" mypid2 0 0
" mypid3 0 0
" peeringpid1 0 1
" peeringpid2 0 2
" transitpid1 7 3
" transitpid2 8 3
" defaultpid 4 5
mypid3 mypid1 0 0
" mypid2 0 0
" mypid3 0 0
" peeringpid1 0 3
" peeringpid2 0 2
" transitpid1 8 2
" transitpid2 8 4
" defaultpid 5.1 5
Figure 2: Corresponding Cost Map
Note that the above represents a sparse cost map, i.e., the ALTO server is not defining a path cost from each source PID to each destination PID. It is only defining the costs that it is interested in serving.
Exhaustive test cases are described in subsections below. Note that it is not expected that an ALTO client and server implementation generate requests and responses in the same format as shown below. The syntax related to representing each request or response is left to each individual implementation as long as the payload is syntactically valid and semantically equivalent to any other representation of the same payload.
In the test cases below, an ALTO server is assumed to be available at the URL http://alto.ietf.org. Requests are directed towards it. This document assumes that the ALTO server URL has been discovered by the ALTO discovery protocol, however, it does not provide further details on the discovery protocol itself. Wherever possible, relevant HTTP headers are shown in the test cases, however, for the sake of brevity not all headers are depicted.
Client -> Server:
-----------------
GET /directory HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-directory+json,
application/alto-error+json
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 2596
Connection: close
Content-Type: application/alto-directory+json
Date: Wed, 29 Jun 2011 10:52:09 GMT
{
"resources": [
{
"capabilities": {
"cost-modes": [
"numerical"
],
"cost-types": [
"routingcost"
]
},
"media-types": [
"application/alto-costmap+json"
],
"uri": "http://alto.ietf.org/costmap/numerical/routingcost"
},
{
"capabilities": {
"cost-modes": [
"ordinal"
],
"cost-types": [
"routingcost"
]
},
"media-types": [
"application/alto-costmap+json"
],
"uri": "http://alto.ietf.org/costmap/ordinal/routingcost"
},
{
"media-types": [
"application/alto-networkmap+json"
],
"uri": "http://alto.ietf.org/networkmap"
},
{
"media-types": [
"application/alto-serverinfo+json"
],
"uri": "http://alto.ietf.org/serverinfo"
},
{
"accepts": [
"application/alto-costmapfilter+json"
],
"capabilities": {
"cost-constraints": true,
"cost-modes": [
"numerical",
"ordinal"
],
"cost-types": [
"routingcost"
]
},
"media-types": [
"application/alto-costmap+json"
],
"uri": "http://alto.ietf.org/costmap/filtered"
},
{
"accepts": [
"application/alto-endpointcostparams+json"
],
"capabilities": {
"cost-constraints": true,
"cost-modes": [
"numerical",
"ordinal"
],
"cost-types": [
"routingcost"
]
},
"media-types": [
"application/alto-endpointcost+json"
],
"uri": "http://alto.ietf.org/endpoints/cost"
},
{
"accepts": [
"application/alto-endpointpropparams+json"
],
"capabilities": {
"prop-types": [
"pid"
]
},
"media-types": [
"application/alto-endpointprop+json"
],
"uri": "http://alto.ietf.org/endpoints/property"
},
{
"accepts": [
"application/alto-networkmapfilter+json"
],
"media-types": [
"application/alto-networkmap+json"
],
"uri": "http://alto.ietf.org/networkmap/filtered"
}
]
}
Client -> Server:
-----------------
POST /endpoints/property HTTP/1.1
Host: alto.ietf.org
Content-Length: ...
Accept: application/alto-endpointprop+json
{
"properties" : [ "pid" ],
"endpoints" : [ "ipv4:192.168.1.23" ]
}
The server returns the following response (note that the longest prefix match is used to retrieve the corresponding PID property).
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: ...
Content-Type: application/alto-endpointprop+json
{
"meta" : {},
"data": {
"ipv4:192.168.1.23" : { "pid": "mypid2" }
}
}
Client -> Server:
-----------------
POST /endpoints/property HTTP/1.1
Host: alto.ietf.org
Content-Length: ...
Accept: application/alto-endpointprop+json
{
"properties" : [ "pid" ],
"endpoints" : [ "ipv4:192.168.10.23" ]
}
The server returns the following response (note that the longest prefix match is used to retrieve the corresponding PID property).
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: ...
Content-Type: application/alto-endpointprop+json
{
"meta" : {},
"data": {
"ipv4:192.168.10.23" : { "pid": "mypid3" }
}
}
Client -> Server:
-----------------
POST /endpoints/property HTTP/1.1
Host: alto.ietf.org
Content-Length: ...
Accept: application/alto-endpointprop+json
{
"properties" : [ "pid" ],
"endpoints" : [ "ipv4:201.1.13.12" ]
}
The server returns the following response (note that the longest prefix match is used to retrieve the corresponding PID property).
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: ...
Content-Type: application/alto-endpointprop+json
{
"meta" : {},
"data": {
"ipv4:201.1.13.12" : { "pid": "defaultpid" }
}
}
Client -> Server:
-----------------
POST /endpoints/property HTTP/1.1
Host: alto.ietf.org
Content-Length: 106
Accept: application/alto-endpointprop+json
Content-Type: application/alto-endpointpropparams+json
{
"properties" : [ "pid" ],
"endpoints" : [ "ipv6:1234::192.168.1.23",
"ipv6:2001:DB8::2345:5678" ]
}
The server returns the following response:
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Type: application/alto-endpointprop+json;charset=UTF-8
Content-Length: 157
{
"meta" : { } ,
"data" : {
"ipv6:1234::192.168.1.23" : { "pid" : "defaultpid " } ,
"ipv6:2001:DB8::2345:5678" : { "pid" : "peeringpid2" }
}
}
Client -> Server:
-----------------
POST /endpoints/cost HTTP/1.1
Host: alto.example.com
Content-Length: 429
Content-Type: application/alto-endpointcostparams+json
Accept: application/alto-endpointcost+json,
application/alto-error+json
{
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"endpoints" : {
"srcs": [ "ipv4:10.0.0.0", "ipv4:192.168.11.0",
"ipv4:192.168.10.0"],
"dsts": [
"ipv4:10.0.0.0",
"ipv4:15.0.0.0",
"ipv4:192.168.11.0",
"ipv4:192.168.10.0",
"ipv4:128.0.0.0",
"ipv4:130.0.0.0",
"ipv4:0.0.0.0",
"ipv4:132.0.0.0",
"ipv4:135.0.0.0"
]
}
}
Server responds with the following:
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 1692
Content-Type: application/alto-endpointcost+json
{
"meta": { },
"data": {
"cost-mode": "numerical",
"cost-type": "routingcost",
"map": {
"ipv4:10.0.0.0": {
"ipv4:10.0.0.0": 0.000000,
"ipv4:15.0.0.0": 0.000000,
"ipv4:192.168.11.0": 0.000000,
"ipv4:192.168.10.0": 0.000000,
"ipv4:128.0.0.0": 0.000000,
"ipv4:130.0.0.0": 0.000000,
"ipv4:0.0.0.0": 4.000000,
"ipv4:132.0.0.0": 5.000000,
"ipv4:135.0.0.0": 10.000000
},
"ipv4:192.168.11.0": {
"ipv4:10.0.0.0": 0.000000,
"ipv4:15.0.0.0": 0.000000,
"ipv4:192.168.11.0": 0.000000,
"ipv4:192.168.10.0": 0.000000,
"ipv4:128.0.0.0": 0.000000,
"ipv4:130.0.0.0": 0.000000,
"ipv4:0.0.0.0": 4.000000,
"ipv4:132.0.0.0": 7.000000,
"ipv4:135.0.0.0": 8.000000
},
"ipv4:192.168.10.0": {
"ipv4:10.0.0.0": 0.000000,
"ipv4:15.0.0.0": 0.000000,
"ipv4:192.168.11.0": 0.000000,
"ipv4:192.168.10.0": 0.000000,
"ipv4:128.0.0.0":0.000000,
"ipv4:130.0.0.0": 0.000000,
"ipv4:0.0.0.0": 5.100000,
"ipv4:132.0.0.0": 8.000000,
"ipv4:135.0.0.0": 8.000000
}
}
}
}
Server -> Client:
-----------------
POST /endpoints/cost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-endpointcost+json,
application/alto-error+json
Content-Type: application/alto-endpointcostparams+json
Content-Length: 235
{
"cost-mode" : "ordinal",
"cost-type" : "routingcost",
"endpoints" : {
"srcs": [ "ipv6:2001:DB8::ABCD:6789", "ipv4:192.168.10.1" ],
"dsts": [
"ipv6:2001:DB8::2345:5678",
"ipv6:2003::192.168.10.1"
]
}
}
Client -> Server:
-----------------
HTTP/1.1 200 OK
Content-Type: application/alto-endpointcost+json;charset=UTF-8
Content-Length: 376
{
"data": {
"cost-mode": "ordinal",
"cost-type": "routingcost",
"map": {
"ipv4:192.168.10.1": {
"ipv6:2001:DB8::2345:5678": 1,
"ipv6:2003::192.168.10.1": 2
},
"ipv6:2001:DB8::ABCD:6789": {
"ipv6:2001:DB8::2345:5678": 1,
"ipv6:2003::192.168.10.1": 1
}
},
"map-vtag": "gqcla2l8"
},
"meta": {}
}
To provide (TODO).
Client -> Server:
-----------------
GET /networkmap HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-networkmap+json,
application/alto-error+json
The server returns the following response.
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 799
Content-Type: application/alto-networkmap+json
{
"meta" : {},
"data" : {
"map-vtag" : "1266506139",
"map" : {
"mypid1" : {
"ipv4" : [ "10.0.0.0/8", "15.0.0.0/8" ]
},
"mypid2" : {
"ipv4" : [ "192.168.0.0/16" ]
},
"mypid3" : {
"ipv4" : [ "192.168.10.0/24" ]
},
"peeringpid1" : {
"ipv4" : [ "128.0.0.0/16" ]
},
"peeringpid2" : {
"ipv4" : [ "130.0.0.0/16" ],
"ipv6" : [ "2001:DB8::/32"]
},
"transitpid1" : {
"ipv4" : [ "132.0.0.0/16" ]
},
"transitpid2" : {
"ipv4" : [ "135.0.0.0/16" ]
},
"defaultpid" : {
"ipv4" : [ "0.0.0.0/0" ],
"ipv6" : [ "::/0" ]
}
}
}
}
Client -> Server:
-----------------
GET /costmap/numerical/routingcost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-costmap+json,
application/alto-error+json
The server returns the following response. In the response below, note that the version tag of the cost map ("map-vtag") corresponds to the network map of the same version shown in test case Test-MAPS-1.
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 787
Content-Type: application/alto-costmap+json
{
"meta" : {},
"data" : {
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"map-vtag" : "1266506139",
"map" : {
"mypid1": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 0, "peerinpid2" : 0,
"transitpid1" : 5, "transitpid2" : 10,
"defaultpid" : 4},
"mypid2": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 0, "peerinpid2" : 0,
"transitpid1" : 7, "transitpid2" : 8,
"defaultpid" : 4},
"mypid3": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 0, "peerinpid2" : 0,
"transitpid1" : 8, "transitpid2" : 8,
"defaultpid" : 5.1}
}
}
}
Client -> Server:
-----------------
GET /costmap/ordinal/routingcost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-costmap+json,
application/alto-error+json
The server returns the following response. In the response below, note that the version tag of the cost map ("map-vtag") corresponds to the network map of the same version shown in test case Test-MAPS-1.
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: ...
Content-Type: application/alto-costmap+json
{
"meta" : {},
"data" : {
"cost-mode" : "ordinal",
"cost-type" : "routingcost",
"map-vtag" : "1266506139",
"map" : {
"mypid1": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 1, "peerinpid2" : 1,
"transitpid1" : 4, "transitpid2" : 4,
"defaultpid" : 5},
"mypid2": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 1, "peerinpid2" : 2,
"transitpid1" : 3, "transitpid2" : 3,
"defaultpid" : 5},
"mypid3": { "mypid1" : 0, "mypid2" : 0, "mypid3" : 0,
"peeringpid1" : 3, "peerinpid2" : 2,
"transitpid1" : 2, "transitpid2" : 4,
"defaultpid" : 5}
}
}
}
Add a new block of addresses to the network map of Figure 1, thereby updating the network map. For example, add the following new entry to the network map of Figure 1:
peeringpid2 130.0.0.0/16, 2001:DB8::/32, 201.1.2.0/24
The ALTO client retrieves the new network map using the GET request shown in Test-MAPS-1. The expectation is that the retrieved network map has the new PID (peeringpid2) included in the topology, and the version tag on the newly retrieved network map should be different than the response to the ALTO client shown in Test-MAPS-1.
The server should respond with a response that approximates what is shown below:
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 815
Content-Type: application/alto-networkmap+json
{
"meta" : {},
"data" : {
"map-vtag" : "1266506155",
"map" : {
"mypid1" : {
"ipv4" : [ "10.0.0.0/8", "15.0.0.0/8" ]
},
"mypid2" : {
"ipv4" : [ "192.168.0.0/16" ]
},
"mypid3" : {
"ipv4" : [ "192.168.10.0/24" ]
},
"peeringpid1" : {
"ipv4" : [ "128.0.0.0/16" ]
},
"peeringpid2" : {
"ipv4" : [ "130.0.0.0/16", "201.1.2.0/24" ],
"ipv6" : [ "2001:DB8::/32"]
},
"transitpid1" : {
"ipv4" : [ "132.0.0.0/16" ]
},
"transitpid2" : {
"ipv4" : [ "135.0.0.0/16" ]
},
"defaultpid" : {
"ipv4" : [ "0.0.0.0/0" ],
"ipv6" : [ "::/0" ]
}
}
}
}
Client -> Server:
-----------------
POST /networkmap/filtered HTTP/1.1
Host: alto.ietf.org
Content-Length: 26
Content-Type: application/alto-networkmapfilter+json
Accept: application/alto-networkmap+json,
application/alto-error+json
{
"pids": [ "mypid2" ]
}
The server responds with the following:
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 172
Content-Type: application/alto-networkmap+json
{
"meta" : {},
"data" : {
"map-vtag" : "1266506155",
"map" : {
"mypid2" : {
"ipv4" : [ "192.168.0.0/16" ]
}
}
}
}
Client -> Server:
-----------------
POST /costmap/filtered HTTP/1.1
Host: alto.ietf.org
Content-Type: application/alto-costmapfilter+json
Content-Length: 174
Accept: application/alto-costmap+json,
application/alto-error+json
{
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"pids" : {
"srcs" : [ "mypid1", "mypid3" ],
"dsts" : [ "mypid2", "peeringpid1", "transitpid2" ]
}
}
The server responds with the following:
Server -> Client:
-----------------
HTTP/1.1 200 OK
Content-Length: 294
Content-Type: application/alto-costmap+json
{
"meta" : {},
"data" : {
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"map-vtag" : "1266506155",
"map" : {
"mypid1": { "mypid2": 0, "peeringpid1": 0,
"transitpid2": 10 },
"mypid3": { "mypid2": 0, "peeringpid1": 0,
"transitpid2": 8 }
}
}
}
Client -> Server:
-----------------
POST /endpoints/cost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-endpointcost+json,
application/alto-error+json
Content-Type: application/alto-endpointcostparams+json
Content-Length: 131
{
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"endpoints": {
"srcs": [ "ipv4:10.0.0.0"],
"dsts": [ "ipv4:10.0.0.0" ] }
}
The server returns an HTTP response code of 400 with ALTO error code of E_SYNTAX (c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Type: application/alto-error+json
Content-Length: ...
{
"code": "E_SYNTAX"
}
Client -> Server:
-----------------
POST /endpoints/cost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-endpointcost+json,
application/alto-error+json
Content-Type: application/alto-endpointcostparams+json
Content-Length: 137
{
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"endpoints": {
"srcs": [ "ipv4:10.0.0.0"] }
}
The server returns an HTTP response code of 400 with ALTO error code of E_JSON_FIELD_MISSING (c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Type: application/alto-error+json
Content-Length: ...
{
"code": "E_JSON_FIELD_MISSING"
}
Client -> Server:
-----------------
POST /endpoints/cost HTTP/1.1
Host: alto.ietf.org
Accept: application/alto-endpointcost+json,
application/alto-error+json
Content-Type: application/alto-endpointcostparams+json
Content-Length: 176
{
"cost-mode" : "numerical",
"cost-type" : "routingcost",
"endpoints": {
"srcs":"ipv4:10.0.0.0" ,
"dsts": [ "ipv4:10.0.0.0" ]
}
}
The server returns an HTTP response code of 400 with ALTO error code of E_JSON_VALUE_TYPE(c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Type: application/alto-error+json
Content-Length: ...
{
"code": "E_JSON_VALUE_TYPE"
}
Client -> Server:
-----------------
POST /costmap/filtered HTTP/1.1
Host: alto.ietf.org
Content-Length: 105
Content-Type: application/alto-costmapfilter+json
Accept: application/alto-costmap+json
{
"cost-mode": "foo",
"cost-type": "routingcost",
"pids": {
"dsts": [],
"srcs": []
}
}
The server returns an HTTP response code of 400 with ALTO error code of E_INVALID_COST_MODE (c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Length: ...
Content-Type: application/alto-error+json
{
"code": "E_INVALID_COST_MODE"
}
Client -> Server:
-----------------
POST /costmap/filtered HTTP/1.1
Host: alto.ietf.org
Content-Length: 105
Content-Type: application/alto-costmapfilter+json
Accept: application/alto-costmap+json
{
"cost-mode": "numerical",
"cost-type": "foo",
"pids": {
"dsts": [],
"srcs": []
}
}
The server returns an HTTP response code of 400 with ALTO error code of E_INVALID_COST_TYPE (c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Length: ...
Content-Type: application/alto-error+json
{
"code": "E_INVALID_COST_TYPE"
}
Client -> Server:
-----------------
POST /endpoints/property HTTP/1.1
Host: alto.ietf.org
Content-Length: 66
Content-Type: application/alto-endpointpropparams+json
Accept: application/alto-endpointprop+json
{
"endpoints": ["ipv4:10.0.0.1"],
"properties": ["foo"]
}
The server returns an HTTP response code of 400 with ALTO error code of E_INVALID_PROPERTYTYPE (c.f., Table 1 [I-D.ietf-alto-protocol]).
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Length: ...
Content-Type: application/alto-error+json
{
"code": "E_INVALID_PROPERTY_TYPE"
}
Client -> Server:
-----------------
POST /costmap/filtered HTTP/1.1
Host: alto.ietf.org
Content-Length: 112
Content-Type: application/alto-costmapfilter+json
Accept: application/alto-costmap+json
{
"cost-mode": "bar",
"cost-type": "foo",
"pids": {
"dsts": [],
"srcs": []
}
}
The server must detect at least one of the errors and return the detected error.
Server -> Client:
-----------------
HTTP/1.1 400 Bad Request
Content-Length: ...
Content-Type: application/alto-error+json
{
"code": "E_INVALID_COST_TYPE"
}
This document does not present any new security considerations above and beyond what is documented in the ALTO protocol [I-D.ietf-alto-protocol].
This document does not require any action from IANA.
| [RFC2119] | Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. |
| [I-D.ietf-alto-protocol] | Alimi, R, Penno, R and Y Yang, "ALTO Protocol", Internet-Draft draft-ietf-alto-protocol-11, March 2012. |
The editors will like to thank the ALTO working group participants for reviewing test cases. Richard Alimi and Mikio Hara contributed review cycles to the contents of this document.