在Android中使用 asmack 实现文件的接收和发送

发布时间：2020-10-24 05:33:59 来源：网络阅读：6580 作者：安静的疯子栏目：移动开发

本篇主要是基于最近帮助朋友在 Android 中使用 asmack 库实现文件的接收和发送功能时，写了个参考示例，这里做个记录，以便于自己以后参考。

文件传输相关的XEP协议参考:

2【XEP-0095】StreamInitiation: http://xmpp.org/extensions/xep-0095.html

2【XEP-0096】SI FileTransfer: http://xmpp.org/extensions/xep-0096.html

2【XEP-0030】ServiceDiscovery: http://xmpp.org/extensions/xep-0030.html

2【XEP-0065】SOCKS5Bytestreams: http://xmpp.org/extensions/xep-0065.html

2【XEP-0066】Out of BandData: http://xmpp.org/extensions/xep-0066.html

2【XEP-0047】In-BandBytestreams: http://xmpp.org/extensions/xep-0047.html

本实例中主要采用的是SI + IBB 的方式发送和接收文件。

1，首先在连接和登录之前设置 ProviderManager，同时设置好全局的文件传输管理器(FileTransferManager) fileTransferManager，如下：

/**
* 登录 IM 服务器，同时负责连接和登录
*/
public boolean login(String user, String password)
{
ConnectionConfiguration conf = new ConnectionConfiguration(
IM_HOST, IM_PORT, IM_SERVICE_NAME);
conf.setDebuggerEnabled(true);
conf.setCompressionEnabled(false);
conf.setSendPresence(true);
conf.setSASLAuthenticationEnabled(false);
conf.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
connection = new XMPPConnection(conf);

ProviderManager pm = ProviderManager.getInstance();

// Private Data Storage
pm.addIQProvider("query", "jabber:iq:private", new PrivateDataManager.PrivateDataIQProvider());

// Roster Exchange
pm.addExtensionProvider("x", "jabber:x:roster", new RosterExchangeProvider());

// Message Events
pm.addExtensionProvider("x", "jabber:x:event", new MessageEventProvider());

// Chat State
pm.addExtensionProvider("active", "http://jabber.org/protocol/chatstates", new ChatStateExtension.Provider());
pm.addExtensionProvider("composing", "http://jabber.org/protocol/chatstates", new ChatStateExtension.Provider());
pm.addExtensionProvider("paused", "http://jabber.org/protocol/chatstates", new ChatStateExtension.Provider());
pm.addExtensionProvider("inactive", "http://jabber.org/protocol/chatstates", new ChatStateExtension.Provider());
pm.addExtensionProvider("gone", "http://jabber.org/protocol/chatstates", new ChatStateExtension.Provider());

// XHTML
pm.addExtensionProvider("html", "http://jabber.org/protocol/xhtml-im", new XHTMLExtensionProvider());

// Group Chat Invitations
pm.addExtensionProvider("x", "jabber:x:conference", new GroupChatInvitation.Provider());

// Service Discovery # Items
pm.addIQProvider("query", "http://jabber.org/protocol/disco#items", new DiscoverItemsProvider());

// Service Discovery # Info
pm.addIQProvider("query", "http://jabber.org/protocol/disco#info", new DiscoverInfoProvider());

// Data Forms
pm.addExtensionProvider("x", "jabber:x:data", new DataFormProvider());

// MUC User
pm.addExtensionProvider("x", "http://jabber.org/protocol/muc#user", new MUCUserProvider());

// MUC Admin
pm.addIQProvider("query", "http://jabber.org/protocol/muc#admin", new MUCAdminProvider());

// MUC Owner
pm.addIQProvider("query", "http://jabber.org/protocol/muc#owner", new MUCOwnerProvider());

// Delayed Delivery
pm.addExtensionProvider("x", "jabber:x:delay", new DelayInformationProvider());

// Version
try {
pm.addIQProvider("query", "jabber:iq:version",
Class.forName("org.jivesoftware.smackx.packet.Version"));
} catch (ClassNotFoundException e) {
// Not sure what's happening here.
}

// VCard
pm.addIQProvider("vCard", "vcard-temp", new VCardProvider());

// Offline Message Requests
pm.addIQProvider("offline", "http://jabber.org/protocol/offline", new OfflineMessageRequest.Provider());

// Offline Message Indicator
pm.addExtensionProvider("offline", "http://jabber.org/protocol/offline", new OfflineMessageInfo.Provider());

// Last Activity
pm.addIQProvider("query", "jabber:iq:last", new LastActivity.Provider());

// User Search
pm.addIQProvider("query", "jabber:iq:search", new UserSearch.Provider());

// SharedGroupsInfo
pm.addIQProvider("sharedgroup", "http://www.jivesoftware.org/protocol/sharedgroup", new SharedGroupsInfo.Provider());

// JEP-33: Extended Stanza Addressing
pm.addExtensionProvider("addresses", "http://jabber.org/protocol/address", new MultipleAddressesProvider());

// FileTransfer
pm.addIQProvider("si", "http://jabber.org/protocol/si", new StreamInitiationProvider());
pm.addIQProvider("query", "http://jabber.org/protocol/bytestreams", new BytestreamsProvider());

// Privacy
pm.addIQProvider("query", "jabber:iq:privacy", new PrivacyProvider());

pm.addIQProvider("command", "http://jabber.org/protocol/commands",
new AdHocCommandDataProvider());

pm.addExtensionProvider("malformed-action",
"http://jabber.org/protocol/commands",
new AdHocCommandDataProvider.MalformedActionError());

pm.addExtensionProvider("bad-locale",
"http://jabber.org/protocol/commands",
new AdHocCommandDataProvider.BadLocaleError());

pm.addExtensionProvider("bad-payload",
"http://jabber.org/protocol/commands",
new AdHocCommandDataProvider.BadPayloadError());

pm.addExtensionProvider("bad-sessionid",
"http://jabber.org/protocol/commands",
new AdHocCommandDataProvider.BadSessionIDError());

pm.addExtensionProvider("session-expired",
"http://jabber.org/protocol/commands",
new AdHocCommandDataProvider.SessionExpiredError());

try
{
connection.connect();
connection.login(user, password);
}
catch (XMPPException e)
{
e.printStackTrace();
connection = null;
return false;
}

fileTransferManager = new FileTransferManager(connection);
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
if (sdm == null)
sdm = new ServiceDiscoveryManager(connection);
sdm.addFeature("http://jabber.org/protocol/disco#info");
sdm.addFeature("jabber:iq:privacy");
FileTransferNegotiator.setServiceEnabled(connection, true);
return true;
}

2，发送文件，如下：

Button btnSendFile = (Button) rootView.findViewById(R.id.send_file_btn);
btnSendFile.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Toast.makeText(getActivity(), "send file", Toast.LENGTH_SHORT).show();
new SendFileTask().execute(new Uri[]{ uriFile });
}
});

// 将发送文件的操作采用 AsyncTask 的方式实现（SendFileTask）：
public class SendFileTask extends AsyncTask<Uri, Integer, Long> {

@Override
protected Long doInBackground(Uri... params) {

if (params.length < 1) {
return Long.valueOf(-1);
}

Uri uriFile = params[0];
FileTransferManager ftm = MainHelloIM.getInstance().getFileTransferManager();
if (ftm != null)
{
OutgoingFileTransfer oft = ftm.createOutgoingFileTransfer("blue@test.cn/Spark");
try
{
String[] proj = { MediaStore.Images.Media.DATA };
Cursor actualp_w_picpathcursor = managedQuery(uriFile,proj,null,null,null);
int actual_p_w_picpath_column_index
= actualp_w_picpathcursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
actualp_w_picpathcursor.moveToFirst();
String filePath = actualp_w_picpathcursor.getString(actual_p_w_picpath_column_index);
File fileToSend = new File(filePath);
if (fileToSend.exists())
{
oft.sendFile(fileToSend, "recv my file!");
while (!oft.isDone())
{
if (oft.getStatus().equals(FileTransfer.Status.error))
{
Log.e(TAG, "send failed");
}
else
{
Log.i(TAG, "status:" + oft.getStatus() + "|progress:" + oft.getProgress());
}
Thread.sleep(1000);
}
}
}
catch (XMPPException e)
{
e.printStackTrace();
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}

return Long.valueOf(0);
}
}

3，接收文件，主要通过设置文件传输监听器来实现：

FileTransferManager ftm = MainHelloIM.getInstance().getFileTransferManager();
ftm.addFileTransferListener(new FileTransferListener()
{
@Override
public void fileTransferRequest(FileTransferRequest fileTransferRequest)
{
Log.i(TAG, "has file");
IncomingFileTransfer transfer = fileTransferRequest.accept();
File sdDir = Environment.getExternalStorageDirectory();
String filePath = sdDir.toString() + "/" + fileTransferRequest.getFileName();
try
{
transfer.recieveFile(new File(filePath));
}
catch (XMPPException e)
{
e.printStackTrace();
}
}
});

下面为完整的文件传输的消息交互流程：

/**
* 前面主要遵循标准 XEP-0095 来协商采用的文件传输方式
*/

//----- negotiation profile and stream

hhy -> blue
// hhy 需要发送 p_w_picpath/png 格式的文件 bookCater.png 给 blue
<iq id="VFDHn-4" to="blue@sharexun.cn/Spark" from="hhy@sharexun.cn/Smack" type="set">
<si xmlns="http://jabber.org/protocol/si"
id="jsi_7839940461539037483"
mime-type="p_w_picpath/png"
profile="http://jabber.org/protocol/si/profile/file-transfer">
<file xmlns="https://cache.yisu.com/upload/information/20200311/46/202455.jpg" size="448" >
<desc>recv my file!</desc>
</file>
<feature xmlns="http://jabber.org/protocol/feature-neg">
<x xmlns="jabber:x:data" type="form">
<field var="stream-method" type="list-single">
<option>
<value>http://jabber.org/protocol/bytestreams</value>
</option>
<option>
<value>http://jabber.org/protocol/ibb</value>
</option>
</field>
</x>
</feature>
</si>
</iq>

blue -> hhy
// blue 返回的结果显示 blue 支持 bytestreams 和 ibb 两种方式传输文件
<iq id="VFDHn-4" to="hhy@sharexun.cn/Smack" from="blue@sharexun.cn/Spark" type="result">
<si xmlns="http://jabber.org/protocol/si">
<feature xmlns="http://jabber.org/protocol/feature-neg">
<x xmlns="jabber:x:data" type="submit">
<field var="stream-method">
<value>http://jabber.org/protocol/bytestreams</value>
<value>http://jabber.org/protocol/ibb</value>
</field>
</x>
</feature>
</si>
</iq>

//----- service discovery

hhy -> blue
<iq id="VFDHn-5" to="blue@sharexun.cn/Spark" type="get">
<query xmlns="http://jabber.org/protocol/disco#info"></query>
</iq>

blue -> hhy
<iq id="VFDHn-5" to="hhy@sharexun.cn/Smack" type="result" from="blue@sharexun.cn/Spark">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="client" name="Smack" type="pc"/>
<feature var="http://jabber.org/protocol/xhtml-im"/>
<feature var="http://jabber.org/protocol/muc"/>
<feature var="http://jabber.org/protocol/bytestreams"/>
<feature var="http://jabber.org/protocol/commands"/>
<feature var="http://jabber.org/protocol/si/profile/file-transfer"/>
<feature var="http://jabber.org/protocol/si"/>
<feature var="http://jabber.org/protocol/ibb"/>
</query>
</iq>

hhy -> [server]
<iq id="VFDHn-6" to="sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/disco#items"></query>
</iq>

blue -> hhy
<iq id="VFDHn-5" to="hhy@sharexun.cn/Smack" type="result" from="blue@sharexun.cn/Spark">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="client" name="Smack" type="pc"/>
<feature var="http://www.xmpp.org/extensions/xep-0166.html#ns"/>
<feature var="urn:xmpp:tmp:jingle"/>
</query>
</iq>

[server] -> hhy
<iq type="result" id="VFDHn-6" from="sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/disco#items">
<item jid="proxy.sharexun.cn" name="Socks 5 Bytestreams Proxy"/>
<item jid="pubsub.sharexun.cn" name="Publish-Subscribe service"/>
<item jid="search.sharexun.cn" name="User Search"/>
<item jid="conference.sharexun.cn" name="............"/>
</query>
</iq>

hhy -> [server proxy]
<iq id="VFDHn-7" to="proxy.sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/disco#info"></query>
</iq>

[server proxy] -> hhy
<iq type="result" id="VFDHn-7" from="proxy.sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="proxy" name="SOCKS5 Bytestreams Service" type="bytestreams"/>
<feature var="http://jabber.org/protocol/bytestreams"/>
<feature var="http://jabber.org/protocol/disco#info"/>
</query>
</iq>

hhy -> [server pubsub]
<iq id="VFDHn-8" to="pubsub.sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/disco#info"></query>
</iq>

[server pubsub] -> hhy
<iq type="result" id="VFDHn-8" from="pubsub.sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="pubsub" name="Publish-Subscribe service" type="service"/>
<feature var="http://jabber.org/protocol/pubsub"/>
<feature var="http://jabber.org/protocol/pubsub#collections"/>
<feature var="http://jabber.org/protocol/pubsub#config-node"/>
<feature var="http://jabber.org/protocol/pubsub#create-and-configure"/>
<feature var="http://jabber.org/protocol/pubsub#create-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#delete-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#get-pending"/>
<feature var="http://jabber.org/protocol/pubsub#instant-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#item-ids"/>
<feature var="http://jabber.org/protocol/pubsub#meta-data"/>
<feature var="http://jabber.org/protocol/pubsub#modify-affiliations"/>
<feature var="http://jabber.org/protocol/pubsub#manage-subscriptions"/>
<feature var="http://jabber.org/protocol/pubsub#multi-subscribe"/>
<feature var="http://jabber.org/protocol/pubsub#outcast-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#persistent-items"/>
<feature var="http://jabber.org/protocol/pubsub#presence-notifications"/>
<feature var="http://jabber.org/protocol/pubsub#publish"/>
<feature var="http://jabber.org/protocol/pubsub#publisher-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#purge-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#retract-items"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-affiliations"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-default"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-items"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-subscriptions"/>
<feature var="http://jabber.org/protocol/pubsub#subscribe"/>
<feature var="http://jabber.org/protocol/pubsub#subscription-options"/>
<feature var="http://jabber.org/protocol/pubsub#default_access_model_open"/>
<feature var="http://jabber.org/protocol/disco#info"/>
</query>
</iq>

hhy -> [server search]
<iq id="VFDHn-9" to="search.sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/disco#info"></query>
</iq>

[server search] -> hhy
<iq type="result" id="VFDHn-9" from="search.sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="directory" type="user" name="User Search"/>
<feature var="jabber:iq:search"/>
<feature var="http://jabber.org/protocol/disco#info"/>
<feature var="http://jabber.org/protocol/rsm"/>
</query>
</iq>

hhy -> [server conference]
<iq id="VFDHn-10" to="conference.sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/disco#info"></query>
</iq>

[server conference] -> hhy
<iq type="result" id="VFDHn-10" from="conference.sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="conference" name="............" type="text"/>
<identity category="directory" name="Public Chatroom Search" type="chatroom"/>
<feature var="http://jabber.org/protocol/muc"/>
<feature var="http://jabber.org/protocol/disco#info"/>
<feature var="http://jabber.org/protocol/disco#items"/>
<feature var="jabber:iq:search"/>
<feature var="http://jabber.org/protocol/rsm"/>
</query>
</iq>

//----- 首先是采用 bytestreams 方式传输文件的

hhy -> [server proxy]
<iq id="VFDHn-11" to="proxy.sharexun.cn" type="get">
<query xmlns="http://jabber.org/protocol/bytestreams"/>
</iq>

[server proxy] -> hhy
<iq type="result" id="VFDHn-11" from="proxy.sharexun.cn" to="hhy@sharexun.cn/Smack">
<query xmlns="http://jabber.org/protocol/bytestreams">
<streamhost jid="proxy.sharexun.cn" host="127.0.0.1" port="7777"/>
</query>
</iq>

hhy -> blue
// 这里要求 blue 采用 proxy server 方式来传输文件
<iq id="VFDHn-12" to="blue@sharexun.cn/Spark" type="set">
<query xmlns="http://jabber.org/protocol/bytestreams" sid="jsi_7839940461539037483" mode = "tcp">
<streamhost jid="hhy@sharexun.cn/Smack" host="127.0.0.1" port="7777"/>
<streamhost jid="proxy.sharexun.cn" host="127.0.0.1" port="7777"/>
</query>
</iq>

blue -> hhy
// 可以看到 blue 无法连接到代理服务器，并返回了 404 的错误响应
<iq id="VFDHn-12" to="hhy@sharexun.cn/Smack" from="blue@sharexun.cn/Spark" type="error">
<query xmlns="http://jabber.org/protocol/bytestreams" sid="jsi_7839940461539037483" mode="tcp">
<streamhost jid="hhy@sharexun.cn/Smack" host="127.0.0.1" port="7777"/>
<streamhost jid="proxy.sharexun.cn" host="127.0.0.1" port="7777"/>
</query>
<error code="404" type="CANCEL">
<item-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
<text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" xml:lang="en">Could not establish socket with any provided host</text>
</error>
</iq>

//----- 上面方式不行，采用 IBB 方式传输

hhy -> blue
// 在上面无法采用代理服务器的方式后，这里协商采用 IBB 的方式来传输文件
// 并且这里提示会采用 iq stanza 来传输文件内容
<iq id="VFDHn-13" to="blue@sharexun.cn/Spark" type="set">
<open xmlns="http://jabber.org/protocol/ibb" block-size="4096" sid="jsi_7839940461539037483" stanza="iq"/>
</iq>

blue -> hhy
// blue 确认采用此方式传输文件
<iq id="VFDHn-13" to="hhy@sharexun.cn/Smack" from="blue@sharexun.cn/Spark" type="result"/>

hhy -> blue
// hhy 使用 iq/data 方式来传输文件
<iq id="VFDHn-14" to="blue@sharexun.cn/Spark" type="set">
<data xmlns="http://jabber.org/protocol/ibb" seq="0" sid="jsi_7839940461539037483">
iVBORw0KGgoAAAANSUhEUgAAACwAAAAsCAMAAAApWqozAAAAdVBMVEU0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/I0m/L///9bqfRrsPR6t/WVxPeu0fnj7/1JovPE3fq51/nZ6fyiy/jt9P2IvvbP4/v2+v54PNP4AAAAFnRSTlMABQYJCg4PEZOWmJmiqaqu7/Hy9/n8hZw2JQAAAORJREFUeF7l08luwlAMhWG3acvQeYh955sJ3v8RmxAsQErEyYoF//qTdTampRUroOJAV58lA5Xvzz3+YLA3oscSxb9ELwx3jm2FYy+SUdyIHLWvJ7rEKaoOMpHiC11hmM1+AB7DbHsQLZ+lbEix5iUnRjF3zDhmCCc3lhDsZMzdFpsQQo1gLdwLtgbHjXgUpyySQeyjiLQQ1sx1vDvSaIHL7Wgr1tjMYF3RupO1cRbnwe6Sztfq2c2Bx9wJd9M4xYY1pXvP17/bh0Nd4gkMtBg//KH2h5i2KN70+On1G6Ff64IW9Q/DwZoIf1KdbAAAAABJRU5ErkJggg==
</data>
</iq>

blue -> hhy
// 确认已经接收完成
<iq id="VFDHn-14" to="hhy@sharexun.cn/Smack" from="blue@sharexun.cn/Spark" type="result"/>

hhy -> blue
// hhy 关闭本次传输
<iq id="VFDHn-15" to="blue@sharexun.cn/Spark" type="set">
<close xmlns="http://jabber.org/protocol/ibb" sid="jsi_7839940461539037483"/>
</iq>

blue -> hhy
// 本次文件传输结束
<iq id="VFDHn-15" to="hhy@sharexun.cn/Smack" from="blue@sharexun.cn/Spark" type="result"/>

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