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Merge pull request #226 from fuentesj11/update-hoxt-doc

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Update hoxt.md
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Florian Schmaus 2018-04-04 14:48:53 +02:00 committed by GitHub
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documentation/extensions/hoxt.md
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@ -3,7 +3,7 @@ HTTP over XMPP transport
[Back](index.md)
Allows to transport HTTP communication over XMPP peer-to-peer networks.
Allows the transport of HTTP communication over XMPP peer-to-peer networks.
* Discover HOXT support
* IQ exchange
@ -23,7 +23,7 @@ Once you have your _**ServiceDiscoveryManager**_ you will be able to discover
information associated with an XMPP entity. To discover the information of a
given XMPP entity send **discoverInfo(entityID)** to your
_**ServiceDiscoveryManager**_ where entityID is the ID of the entity. The
message **discoverInfo(entityID)** will answer an instance of
message **discoverInfo(entityID)** will answer with an instance of
_**DiscoverInfo**_ that contains the discovered information.
**Examples**
@ -33,10 +33,10 @@ In this example we can see how to check if the counterpart supports HOXT:
```
// Obtain the ServiceDiscoveryManager associated with my XMPPConnection
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(connection);
// Get the information of a given XMPP entity
DiscoverInfo discoInfo = discoManager.discoverInfo("juliet@capulet.com");
// Get the information of a given XMPP entity, where entityID is a Jid
DiscoverInfo discoInfo = discoManager.discoverInfo(entityID);
// Check if room is HOXT is supported
discoInfo.containsFeature("urn:xmpp:http");
boolean isSupported = discoInfo.containsFeature("urn:xmpp:http");
```
IQ exchange
-----------
@ -44,53 +44,57 @@ IQ exchange
**Description**
You can use IQ's to perform HTTP requests and responses. This is applicable to
relatively short requests and responses (due to limitation of XMPP message
relatively short requests and responses (due to the limitation of XMPP message
size).
**Usage**
First you need to register a _**PacketListener**_ to be able to handle
First you need to register a _**StanzaListener**_ to be able to handle
intended IQs.
For the HTTP client you:
* You create and send _**HttpOverXmppReq**_ request.
* Then you handle the _**HttpOverXmppResp**_ response in your _**PacketListener**_.
* Then you handle the _**HttpOverXmppResp**_ response in your _**StanzaListener**_.
For the HTTP server you:
* You handle the _**HttpOverXmppReq**_ requests in your _**PacketListener**_.
* You handle the _**HttpOverXmppReq**_ requests in your _**StanzaListener**_.
* And create and send _**HttpOverXmppResp**_ responses.
**Examples**
In this example we are HTTP client, so we send request (POST) and handle the
In this example we are an HTTP client, so we send a request (POST) and handle the
response:
```
// create a request body
String urlEncodedMessage = "I_love_you";
// create request
HttpOverXmppReq req = new HttpOverXmppReq(HttpMethod.POST, "/mailbox");
req.setVersion("1.1");
// prepare headers
List<Header> list = new ArrayList<Header>();
list.add(new Header("Host", "juliet.capulet.com"));
list.add(new Header("Content-Type", "application/x-www-form- urlencoded"));
list.add(new Header("Content-Length", Integer.toString(urlEncodedMessage.length())));
req.setHeaders(new HeadersExtension(list));
List<Header> headers = new ArrayList<>();
headers.add(new Header("Host", "juliet.capulet.com"));
headers.add(new Header("Content-Type", "application/x-www-form-urlencoded"));
headers.add(new Header("Content-Length", Integer.toString(urlEncodedMessage.length())));
// provide body or request (not mandatory, - empty body is used for GET)
AbstractHttpOverXmpp.Text child = new AbstractHttpOverXmpp.Text(urlEncodedMessage);
AbstractHttpOverXmpp.Data data = new AbstractHttpOverXmpp.Data(child);
req.setData(data);
// add to
req.setTo("juliet@capulet.com/balcony");
// create request
HttpOverXmppReq req = HttpOverXmppReq.buider()
.setMethod(HttpMethod.POST)
.setResource("/mailbox")
.setHeaders(headers)
.setVersion("1.1")
.setData(data)
.build();
// add to, where jid is the Jid of the individual the packet is sent to
req.setTo(jid);
// send it
connection.sendIqWithResponseCallback(req, new PacketListener() {
connection.sendIqWithResponseCallback(req, new StanzaListener() {
public void processStanza(Stanza iq) {
HttpOverXmppResp resp = (HttpOverXmppResp) iq;
// check HTTP response code
@ -99,10 +103,10 @@ connection.sendIqWithResponseCallback(req, new PacketListener() {
NamedElement child = resp.getData().getChild();
// check which type of content of the response arrived
if (child instanceof AbstractHttpOverXmpp.Xml) {
// print the message and anxiously read if from console ;)
// print the message and anxiously read if from the console ;)
System.out.println(((AbstractHttpOverXmpp.Xml) child).getText());
} else {
// process other AbstractHttpOverXmpp.DataChild subtypes
// process other AbstractHttpOverXmpp data child subtypes
}
}
}