问题
I am using XMPP with iOS for file transfer.
I am using following lines of code to send file. But I am continuously getting single error and stuck on issue.
<error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error>
I have used following code in app to send file between two devices.
XMPPJID *jid = self.chatUserJID;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
@"aqua.png" ];
UIImage* image = [UIImage imageWithContentsOfFile:path];
XMPPSIFileTransfer *sifiletransfer=[[XMPPSIFileTransfer alloc]init];
[sifiletransfer initiateFileTransferTo:jid withData:UIImagePNGRepresentation(image)];
sifiletransfer.sid = [[self xmppStream] generateUUID];
if ([jid.domain isEqualToString:[self.xmppStream myJID].domain]) {
[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:jid.domain, nil]];
} else {
[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:jid.domain,[self.xmppStream myJID].domain, nil]];
}
TURNSocket *socket = [[TURNSocket alloc] initWithStream:[[self appDelegate] xmppStream] toJID:jid];;
[socket startWithDelegate:self delegateQueue:dispatch_get_main_queue()];
Log for file transfer is shown as below.
SEND:
<iq type="get" to="192.168.2.120" id="596BC614-8653-43CC-925B-E56CFF6DB8CF"><query xmlns="http://jabber.org/protocol/disco#items"/></iq>
RECV:
<iq xmlns="jabber:client" type="result" id="596BC614-8653-43CC-925B-E56CFF6DB8CF" from="192.168.2.120" to="jsojitra@192.168.2.120/4a0ce4e9"><query xmlns="http://jabber.org/protocol/disco#items"><item jid="conference.192.168.2.120" name="Public Chatrooms"/><item jid="pubsub.192.168.2.120" name="Publish-Subscribe service"/><item jid="proxy.192.168.2.120" name="Socks 5 Bytestreams Proxy"/></query></iq>
SEND:
<iq type="get" to="proxy.192.168.2.120" id="03078D21-008A-444C-87D4-FCC370D16E5D"><query xmlns="http://jabber.org/protocol/disco#info"/></iq>
RECV:
<iq xmlns="jabber:client" type="result" id="03078D21-008A-444C-87D4-FCC370D16E5D" from="proxy.192.168.2.120" to="jsojitra@192.168.2.120/4a0ce4e9"><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>
SEND:
<iq type="get" to="proxy.192.168.2.120" id="C537E4CC-AD48-4517-85D7-96D6DF1658F4"><query xmlns="http://jabber.org/protocol/bytestreams"/></iq>
RECV:
<iq xmlns="jabber:client" type="result" id="C537E4CC-AD48-4517-85D7-96D6DF1658F4" from="proxy.192.168.2.120" to="jsojitra@192.168.2.120/4a0ce4e9"><query xmlns="http://jabber.org/protocol/bytestreams"><streamhost jid="proxy.192.168.2.120" host="192.168.2.120" port="7777"/></query></iq>
SEND:
<iq type="set" to="spatil@192.168.2.120" id="A791E4C0-3235-402F-A537-94FB296BA0C4"><query xmlns="http://jabber.org/protocol/bytestreams" sid="A791E4C0-3235-402F-A537-94FB296BA0C4" mode="tcp"><streamhost xmlns="http://jabber.org/protocol/bytestreams" jid="proxy.192.168.2.120" host="192.168.2.120" port="7777"/></query></iq>
RECV:
<iq xmlns="jabber:client" type="error" id="A791E4C0-3235-402F-A537-94FB296BA0C4" from="spatil@192.168.2.120" to="jsojitra@192.168.2.120/4a0ce4e9"><query xmlns="http://jabber.org/protocol/bytestreams" sid="A791E4C0-3235-402F-A537-94FB296BA0C4" mode="tcp"><streamhost jid="proxy.192.168.2.120" host="192.168.2.120" port="7777"/></query><error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error></iq>
Can any body please suggest me what can be the mistake because of which this issue is taking place?
I have done following configuration to enable file transfer.
Enabled file transfer from Openfire.
Server -> Server Settings -> File Transfer Settings -> Enable on port number 7777
Set following server properties in Openfire.
xmpp.domain 192.168.2.120
xmpp.proxy.enabled true
xmpp.proxy.externalip 192.168.2.120 / proxy.192.168.2.120 // Tried both
xmpp.proxy.port 7777
I request you to help if you have any idea.
Thanks in advance!!!
回答1:
looks like you haven't passing correct JID with resource. A complete JID with resource looks like jsojitra@192.168.2.120/4a0ce4e9. Last special "4a0ce4e9" are resource which should be in both JID to and from.
You should have
from="spatil@192.168.2.120/someResourceId"
to="jsojitra@192.168.2.120/4a0ce4e9
回答2:
You can use file transfer extension for sending file. You can refer XMPP File Transfer Demo on GitHub. There is also sample application for file transfer using it.
回答3:
I had same problem, I investigated the stanza and solved it this way.
Many people use "/Smack" or "/Resource" as resource part in jid, that is not wrong but you can set resource another way.
Like Arpan Dixit explained, resource path is changing with every presence changed of user. Lets say we want to send image to this user: "user1@mydomain"
You must add "/Resource" part to this jid and it become this: user1@mydomain/Resource
But /Resource path is changing with presence so you must follow every presence change to update resource path. Best way is to get user presence is in roster listener and in presencheChanged() method you get last user resource part like this:
Roster roster=getRoster();
roster.addRosterListener(new RosterListener() {
@Override
public void entriesAdded(Collection<Jid> addresses) {
Log.d("entriesAdded", "ug");
context.sendBroadcast(new Intent("ENTRIES_ADDED"));
}
@Override
public void entriesUpdated(Collection<Jid> addresses) {
Log.d("entriesUpdated", "ug");
}
@Override
public void entriesDeleted(Collection<Jid> addresses) {
Log.d("entriesDeleted", "ug");
}
@Override
public void presenceChanged(Presence presence) {
Log.d("presenceChanged", "ug");
//Resource from presence
String resource = presence.getFrom().getResourceOrEmpty().toString();
//Update resource part for user in DB or preferences
//...
}
});
}
Resource string will be some generated string like "6u1613j3kv" and jid will become:
user1@mydomain/6u1613j3kv
That means that you must create your outgoing transfer like this:
EntityFullJid jid = JidCreate.entityFullFrom("user1@mydomain/6u1613j3kv");
OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(jid)
transfer.sendFile(new File("DirectoryPath"), "Description");
Ofcourse this code is example from Android but it is same for your application on iOS.
Also this can be configured the easy way, just set the resource on
XMPPTCPConnectionConfiguration.Builder //android example.
like
XMPPTCPConnectionConfiguration.Builder configurationBuilder =
XMPPTCPConnectionConfiguration.builder();
configurationBuilder.setResource("yourResourceName");
回答4:
My program worked fine at first, and the same problem occured later. My problem is that the offline message capacity exceeds the preset value in my openfire server. I check my openfire server,and in "Server Settings" I find an item called "offline messaging policy",I expanded the offline message storage capacity of single user. Then the app works fine.
来源：https://stackoverflow.com/questions/26250533/service-unavailable-503-error-for-file-transfer-in-xmpp-with-ios