confirmed on (Debian) Kopete o.12.1

I can't said if it was against a Yahoo messenger Beta 8 but I experienced same behavior with kopete 0.12.1 under kubuntu dapper

Does this problem occur always, or does it work sometimes?

Always.

*** Bug 132178 has been marked as a duplicate of this bug. ***

I confirm, always.

By the way, this bug isn't just in "Gentoo Packages" as specified in the Platform field.  I download and compile from source and I have the same error.

SVN commit 574054 by duffeck:

some fixes in webcam code. That should fix bug 131218.
BUG: 131218


 M  +20 -9     libkyahoo/webcamtask.cpp  
 M  +18 -2     yahooaccount.cpp  
 M  +2 -0      yahooaccount.h  


--- branches/KDE/3.5/kdenetwork/kopete/protocols/yahoo/libkyahoo/webcamtask.cpp #574053:574054
@@ -200,6 +200,7 @@
 	client()->notifyError( i18n("Webcam connection to the user %1 could not be established.\n\nPlease relogin and try again.")
 			.arg(socketMap[socket].sender), QString("%1 - %2").arg(error).arg( socket->errorString()), Client::Error );
 	socketMap.remove( socket );
+	socket->deleteLater();
 }
 
 void WebcamTask::slotRead()
@@ -233,21 +234,28 @@
 	kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Magic Byte:" << data[2] << endl;
 
 	socketMap[socket].status = ConnectedStage2;
-	if( data[2] == (Q_INT8)0x06 )
+
+	QString server;
+	int i = 4;
+	KStreamSocket *newSocket;
+	switch( (const char)data[2] )
 	{
+	case (Q_INT8)0x06:
 		emit webcamNotAvailable(socketMap[socket].sender);
-	}
-	else if( data[2] == (Q_INT8)0x04 || data[2] == (Q_INT8)0x07 )
-	{
-		QString server;
-		int i = 4;
-		while( data[i] != (Q_INT8)0x00 )
+		break;
+	case (Q_INT8)0x04:
+	case (Q_INT8)0x07:
+		while( (const char)data[i] != (Q_INT8)0x00 )
 			server += data[i++];
 		kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Server:" << server << endl;
-// 		server = server.mid( 4, server.find( '0', 4) );
+		if( server.isEmpty() )
+		{
+			emit webcamNotAvailable(socketMap[socket].sender);
+			break;
+		}
 		
 		kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Connecting to " << server << endl;
-		KStreamSocket *newSocket = new KStreamSocket( server, QString::number(5100) );
+		newSocket = new KStreamSocket( server, QString::number(5100) );
 		socketMap[newSocket] = socketMap[socket];
 		newSocket->enableRead( true );
 		connect( newSocket, SIGNAL( connected( const KResolverEntry& ) ), this, SLOT( slotConnectionStage2Established() ) );
@@ -260,6 +268,9 @@
 		}
 		
 		newSocket->connect();	
+		break;
+	default:
+		break;
 	}
 	socketMap.remove( socket );
 	delete socket;
--- branches/KDE/3.5/kdenetwork/kopete/protocols/yahoo/yahooaccount.cpp #574053:574054
@@ -309,7 +309,9 @@
 // 		                 SLOT(slotGotIdentities( const QStringList&)));
 		
 		QObject::connect(m_session, SIGNAL(gotWebcamInvite(const QString&)), this, SLOT(slotGotWebcamInvite(const QString&)));
-				
+		
+		QObject::connect(m_session, SIGNAL(webcamNotAvailable(const QString&)), this, SLOT(slotWebcamNotAvailable(const QString&)));
+		
 		QObject::connect(m_session, SIGNAL(webcamImageReceived(const QString&, const QPixmap& )), this, SLOT(slotGotWebcamImage(const QString&, const QPixmap& )));
 		
 		QObject::connect(m_session, SIGNAL(webcamClosed(const QString&, int )), this, SLOT(slotWebcamClosed(const QString&, int )));
@@ -437,6 +439,8 @@
 		
 		QObject::disconnect(m_session, SIGNAL(gotWebcamInvite(const QString&)), this, SLOT(slotGotWebcamInvite(const QString&)));
 		
+		QObject::disconnect(m_session, SIGNAL(webcamNotAvailable(const QString&)), this, SLOT(slotWebcamNotAvailable(const QString&)));
+		
 		QObject::disconnect(m_session, SIGNAL(webcamImageReceived(const QString&, const QPixmap& )), this, SLOT(slotGotWebcamImage(const QString&, const QPixmap& )));
 		
 		QObject::disconnect(m_session, SIGNAL(webcamClosed(const QString&, int )), this, SLOT(slotWebcamClosed(const QString&, int )));
@@ -1487,10 +1491,22 @@
 		return;
 	}
 	
+	if( m_pendingWebcamInvites.contains( who ) )
+		return;
+	
+	m_pendingWebcamInvites.append( who );
+	
 	if( KMessageBox::Yes == KMessageBox::questionYesNo( Kopete::UI::Global::mainWidget(), i18n("%1 has invited you to view his/her webcam. Accept?")
-							.arg(who), QString::null, i18n("Accept"), i18n("Ignore") ) )	
+							.arg(who), QString::null, i18n("Accept"), i18n("Ignore") ) )
+	{
+		m_pendingWebcamInvites.remove( who );
 		m_session->requestWebcam( who );
+	}
 }
+void YahooAccount::slotWebcamNotAvailable( const QString &who )
+{
+	KMessageBox::sorry( Kopete::UI::Global::mainWidget(), i18n("Webcam for %1 is not available.").arg(who), i18n( "Yahoo Plugin" ) );
+}
 
 void YahooAccount::slotGotWebcamImage( const QString& who, const QPixmap& image )
 {
--- branches/KDE/3.5/kdenetwork/kopete/protocols/yahoo/yahooaccount.h #574053:574054
@@ -211,6 +211,7 @@
 	void slotRemoveHandler(int fd);
 	//void slotHostConnect(const QString &host, int port);
 	void slotGotWebcamInvite(const QString &);
+	void slotWebcamNotAvailable( const QString &who );
 	void slotGotWebcamImage(const QString&, const QPixmap&);
 	void slotWebcamReadyForTransmission();
 	void slotWebcamStopTransmission();
@@ -264,6 +265,7 @@
 	 */
 	QMap<QString, YahooConferenceChatSession *> m_conferences;
 	QStringList m_pendingConfInvites;
+	QStringList m_pendingWebcamInvites;
 
 	QMap<unsigned int, Kopete::Transfer *> m_fileTransfers;
 

I compiled from kopete svn today to verify this bug. Although, the bug resolved the initial problem but it opened up another.

Kopete can now send out video to Yahoo messenger (8.0.0.701,YIMS) which works brilliantly. 

However, if Yahoo Messenger invites the kopete user to view his webcam, the kopete user just sees the first frame. The picture of yahoo messenger user in kopete remains stagnant!

I can confirm this.

I thought it was just my system, though, so I didn't say anything.  Of the dozens of times I've tried to view a Yahoo user's camera, only a couple of times did it show motion video, but it was only for a second or two.  So for the most part, yes, only the first frame is ever shown.

Opening this bug.

Kopete as distributed with Kubuntu 6.06 - can view YIM user's webcam by accepting invitation without difficulty apart from occasional application crashes - and can view own webcam image - but there seems to be no way to "invite user to accept webcam images" and thus no way to send webcam images to YIM user.

Hi Andre,
I will be happy to assist in a debug by hosting a Yahoo messenger stream from  windows and kopete clients if you need it. Please drop me an email.

Rajil

SVN commit 593368 by duffeck:

Fix bug where only the first image of a webcam transmission was shown.
BUG:131218


 M  +8 -4      webcamtask.cpp  


--- branches/KDE/3.5/kdenetwork/kopete/protocols/yahoo/libkyahoo/webcamtask.cpp #593367:593368
@@ -213,13 +213,11 @@
 	{
 		case ConnectedStage1:
 			disconnect( socket, SIGNAL( readyRead() ), this, SLOT( slotRead() ) );
-			kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Connected into stage 1" << endl;
 			connectStage2( socket );
 		break;
 		case ConnectedStage2:
 		case Sending:
 		case SendingEmpty:
-			kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Connected into stage 2" << endl;
 			processData( socket );
 		default:
 		break;
@@ -278,7 +276,6 @@
 
 void WebcamTask::processData( KStreamSocket *socket )
 {
-	kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << endl;
 	QByteArray data( socket->bytesAvailable() );
 	
 	socket->readBlock ( data.data (), data.size () );
@@ -293,7 +290,6 @@
 
 void WebcamTask::parseData( QByteArray &data, KStreamSocket *socket )
 {
-	kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << " data " << data.size() << " bytes " << endl;
 	uint headerLength = 0;
 	uint read = 0;
 	YahooWebcamInformation *info = &socketMap[socket];
@@ -398,9 +394,17 @@
 	}
 	
 	if( info->dataLength <= 0 )
+	{
+		kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "No data to read. (info->dataLength <= 0)" << endl;
+		if( info->headerRead )
+			info->headerRead = false;
 		return;
+	}
 	if( headerLength >= data.size() )
+	{
+		kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "No data to read. (headerLength >= data.size())" << endl;
 		return;		//Nothing to read here...
+	}
 	if( !info->buffer )
 	{
 		kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "Buffer created" << endl;

Excellent work Andre. The bug seems to be fixed. I had a bit of trouble initially to get the remote stream, kopete  kept on saying "Webcam not available". However, after trying multiple times, it eventually connected and the remote stream worked well.

Thanks again.

I can also confirm that this is fixed, however I find that if I have already served a webcam during the current session of Kopete, I sometimes get the "Webcam for [username] is not available." Restarting Kopete allows me to send the webcam to the same user without issue. (This same error used to come up before, however the username portion wasn't in the box, so the error said "Webcam for is not available.")

Pardon the stupid question, would could someone attach a patch or something?  Or at least tell me which version of Kopete in which this fix will be released?  I'm not smart enough to apply these fixes myself...

Matthew: Kopete as included in KDE 3.5.6

Yeah, I know.