SIP/2.0 483 Too Many Hops Via: SIP/2.0/UDP 69.59.142.213:5060;branch=z9hG4bKaf9695a95c294f22b5ecf7c1ba17dbd7;rport=5060 To: <sip:17772276267@in.callcentric.com> From: "Aaron Clauson" <sip:17772775881@callcentric.com>;tag=1146592129 Call-ID: 207152c94f98412c806f50c8f27f837f
CSeq: 2 INVITE Content-Length: 0
This happens due to Max-Forwards: Here max-forwards is 13 which becomes zero but still didn't reach the destination as a result returns Too Many Hops .
rpm
-ivh
http://fedora.mirrors.pair.com/epel/6/i386/epel-release-6-8.noarch.rpm -
See more at:
http://www.broexperts.com/2013/02/how-to-install-filezilla-on-centos-6-3/#sthash.RWxG1cem.dpuf
rpm
-ivh
http://fedora.mirrors.pair.com/epel/6/i386/epel-release-6-8.noarch.rpm -
See more at:
http://www.broexperts.com/2013/02/how-to-install-filezilla-on-centos-6-3/#sthash.RWxG1cem.dpuf
You have a Centos PC and trying to access the root user's Desktop from a Windows PC. You can see the shared folder in the \Network\Centos_PC_IP, but can't access the folder when you double click.
The pop window arise with a error -
You do not have permission to access in windows \\CENTOS_IP\\root. Contact your network administrator to request access.
Solution:
First you need to check you samba settings in your centos pc by command -
testparm
After that you need to do a little change o your /etc/samba/smb.conf file.
Find the folder you shared from root in this file.
It will be like --
[root]
path = /root/Desktop
read only = No
Change it to -
[root]
force user = root
force group = root
path = /root/Desktop
read only = No
And restart the samba by --
/sbin/service smb restart
And you are done!
[Solved by Abdullah Al Mamun @ Eyeball Networks Inc]
Now a days many people like software developers uses 2 or more OS. So the people who have multiple PC's with different OS need to share the files or folder between them. So how?
Solution:
Requirement:
i. Samba
ii. LAN connection
Step 1. Install samba by giving command in centos console -
yum install samba
Step 2. Configure samba by opening smb.conf
vi /etc/samba/smb.conf
i. Create a workgroup in which you are going to share the files/folders.
by default it is like -
workgroup = MYGROUP
change it to -
netbios name = your_host_name
workgroup = workgroup
because windows system has default group named as WORKGROUP.
ii. Now create a shared resource , where you will indicate the path of the folder you want to share.
Where [myshare] is the folder name what you want people to see in their PC.
"path" is the path of your shared folder.
Step 3. Make sure your firewall allows SAMBA.
Step 4. Now test the settings of SAMBA by --
# testparm
Load smb config files from /etc/samba/smb.conf
rlimit_max: rlimit_max (1024) below minimum Windows limit (16384)
Processing section "[myshare]"
Loaded services file OK.
Server role: ROLE_STANDALONE
Press enter to see a dump of your service definitions
Step 5. Disable SELinux by-
setenforce 0
To permanently set it modify the /etc/selinux/config file and set the value of -
Requirement: You want to make an "app", which displays a login screen,
and users can log in. If the login is correct, open a new window, where users can do other staff. Then how can you do this?
Ans:
Step 1. Create a layout xml for the new window. In my case I have created one
named newwindow.xml . The entry are as follows --
In android it is extreme necessary to use button and do many thing on click or touch of this button.
So how you can do this ?
Ans: It's pretty simple!
Just find out the -- findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener);
It is generated by default in new android sdk. The bold portion is the touch listener for button which is implemented on bellow of your main activity class.
You can do your thing on overriden function OnTouch.
If you want to do it for click and many button here is the way --
View.OnClickListener ButtonListener = new View.OnClickListener(){
public void onClick(View view) { switch (view.getId()) {
case R.id.dummy_button: setContentView(R.layout.newwindow); break;
case R.id.dummy_button1: setContentView(R.layout.newwindow1); break;
case R.id.dummy_button2: setContentView(R.layout.newwindow2); break; } }
Ques: How to centre buttons on screen horizontally and vertically ?
Default Screen:
Ans: You need to use a Relative Layout for android GUI in the activity_fullscreen.xml or whatever you name it. You just need to add the android:layout_centerInParent="true" on your relative layout scope.
In default android generate the layout as linear layout for your GUI activity. In that activity you can't use android:layout_centerInParent="true".
It will generate warning as ---
Invalid layout param in a LinearLayout: layout_centerInParent activity_fullscreen.xml /YourProject/res/layout line 52 Android Lint Problem
How?:
Step 1. First open the layout xml from /YourProject/res/layout .
Step 2. Change all of the <FrameLayout> ... </FrameLayout> to <RelativeLayout> ... </RelativeLayout>.
Step 3. Delete default button code portion from you xml and add the following
ClientDlg.cpp is the class where all the action from user's are taken and initiated. The interaction with GUI to logic is so great and easy which will help any developer to understand the flow of code.
Function for login --
void CClientDlg::OnBnClickedButton2()
{
// TODO: Add your control notification handler code here
cTh = AfxBeginThread(
StaticThreadFunc,
this);
Client.cpp class is the MFC GUI initiation class. You can have a look here ..
BOOL CClientApp::InitInstance()
{
// InitCommonControlsEx() is required on Windows XP if an application
// manifest specifies use of ComCtl32.dll version 6 or later to enable
// visual styles. Otherwise, any window creation will fail.
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);
CWinApp::InitInstance();
AfxEnableControlContainer();
// Create the shell manager, in case the dialog contains
// any shell tree view or shell list view controls.
CShellManager *pShellManager = new CShellManager;
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
CClientDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}
// Delete the shell manager created above.
if (pShellManager != NULL)
{
delete pShellManager;
}
// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}
As in my previous post I have talk about server , now it's time for client. This client will use as multi chat client with our very own server. In this client you need to provide server IP ,PORT and an USERNAME.
Then just click the log in button and you are in if you get an welcome message from server.
Technology used:
i. C++
ii. Microsoft visual Studio 2010
iii. MFC GUI
iv. Winshock2 Socket
v. TCP/UDP
vi. Windows Thread
This project consist of 3 classes.
1. Client.cpp 2. ClientDlg.cpp 3. ClientCon.cpp
Lets start with core portion -- I mean the network level connection portion.
I have used the Winshock2 library for the purpose of network communication.
You can use this library on windows with MVS 2010 by including library --
# include <winsock2.h>
And as it is multi user and have GUI so we need thread. For this I have used Windows thread.
You can use this windows thread just by adding ---
# include <Windows.h>
So, why we are late. Lets start....
ClientCon.cpp -- class works for network level connection and data send receive.
void ClientCon::StartConnect(string sAddress, int iPort, string sUsername)
{
struct sockaddr_in server;
char *message , server_reply[2000];
int recv_size;
m_pUser = sUsername;
On StartConnect() Client initiate its socket and connect with server. Client also start listening for messages from server here. All the message from other client will traverse through server and will reach to every client.
This Class also have the function to send the message to server/other client.
Now we will talk about the other MFC GUI portion which I have created and used threaded model.
When in GUI the start button is clicked by providing port number on PORT text box this server start by creating a thread independent from GUI. You can start the server by ENTER also.
Here is some code snap for help --
void CServerDlg::OnBnClickedButton1()
{
// TODO: Add your control notification handler code here
UINT CServerDlg::ThreadFunc()
{
// Do your thing, this thread now has access to all the classes member variables
CString txtname;
GetDlgItemText(IDC_EDIT1, txtname);
int iPort = _wtoi( txtname.GetString() );
we will now demonstrate about the class Server.cpp .
This class is the start point of the server project. It is basically used to call the MFC instance.
There will be some preview of the class here as MFC is out of scope at the moment --
BOOL CServerApp::InitInstance()
{
// InitCommonControlsEx() is required on Windows XP if an application
// manifest specifies use of ComCtl32.dll version 6 or later to enable
// visual styles. Otherwise, any window creation will fail.
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);
CWinApp::InitInstance();
AfxEnableControlContainer();
// Create the shell manager, in case the dialog contains
// any shell tree view or shell list view controls.
CShellManager *pShellManager = new CShellManager;
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
CServerDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}
// Delete the shell manager created above.
if (pShellManager != NULL)
{
delete pShellManager;
}
// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}
Multi-client chat server is open source as I have created it. In this server multiple user can log in and communicate with one another as multicast user. In reality it can use as a chat room server. Can be modified as peer to peer (p2p) text chat. It can also be used as a backbone of a video conferencing project. It has a beautiful and easy to use user interface in MFC. This project is compatible with Microsoft visual studio 2010. I will describe the use of class and function with source code.
Technology used:
i. C++
ii. Microsoft visual Studio 2010
iii. MFC GUI
iv. Winshock2 Socket
v. TCP/UDP
vi. Windows Thread
Lets start with core portion -- I mean the network level connection portion.
I have used the Winshock2 library for the purpose of network communication.
You can use this library on windows with MVS 2010 by including library --
# include <winsock2.h>
And as it is multi user and have GUI so we need thread. For this I have used Windows thread.
You can use this windows thread just by adding ---
# include <Windows.h>
So, why we are late. Lets start....
ServerManager.cpp -- core network connection class. In that class I have also demonstrate how to fetch the remote client IP address from a socket connection.
if (new_socket == INVALID_SOCKET)
{
printf("accept failed with error code : %d" , WSAGetLastError());
return;
}
}
StartListening(int iPort) Initiate a socket and Start listening on a particular port for incoming connections.
This bold letter means it can accept multiple connection( client ). In that function we used a static global variable to count the connection globally and a global static SOCKET array to stored the socket's pointer for future use from thread.
How ?
You can see on that function I have used windows thread. Here I accept the incoming connection and make a thread for every connection.
In DataThreadFunc(LPVOID pParam) I have used the winshock send() API to sending the welcome to the client by client socket.
Here I also have a while loop with recv() API which continue to listening for client messages.
This is a static function which is called for every incoming connection for 1 time.
After receiving a message from a client this thread server now sends this message to every socket it has on its SOCKET array by fetching the socket.
NOTE : Any smart mind can modified this function and can use for p2p message chat.
Here IDC_EDIT1 is the Control Edit Text and txtname is the input at the moment we call.
Convert it to integer or int :
int iPort = _atoi( txtname.GetString() );
int iPort = _wtoi( txtname.GetString() );
// if you use wide charater formats
Append text to Edit Control :
void CServerDlg::AppendTextToEditCtrl(CEdit& edit, LPCTSTR pszText) { // get the initial text length int nLength = edit.GetWindowTextLength(); // put the selection at the end of text edit.SetSel(nLength, nLength); // replace the selection edit.ReplaceSel(pszText); }
ISSUE: In server client scenario it is mandatory to use thread where sever is listening on a particular port.
Now in click of stop button ,how to stop this running thread.
UINT CServerDlg::ThreadFunc() { // Do your thing, this thread now has access to all the classes member variables CString txtname; GetDlgItemText(IDC_EDIT1, txtname); int iPort = _wtoi( txtname.GetString() ); m_pServer = new ServerManager(this); m_pServer->StartListening(iPort);
// while loop on start listening that are blocking call
return 0; }
Step 5. Now to close the thread from clicking stop button ---
void CServerDlg::OnBnClickedStop() { // TODO: Add your control notification handler code here CloseHandle(m_Thread_handle); delete m_pServer; }
ISSUE: This Android SDK requires Android Developer Toolkit version 22.0.0 or above. Current version is 21.1.0.2013-2-6-0-46. Please update ADT to the latest version.
Wait for Eclipse to fetch the repository. An item named Developer tools will appear in the list.
Mark it for install, press Next and follow the steps to install the ADT tools.
When finished, it will ask to restart Eclipse. Make sure you do this.
When Eclipse restarts, all your Android SDK packages should show up again.
ISSUE: In a GUI project there is lots of calculation and works are needed to be done in background when necessary . So when a button pressed or a certain action initiate the GUI may stop responding for you.
SOLUTION: In default when a MFC project is created the GUI portion has thread. So make sure the other necessary works are done on another thread (eg: calculation, process, response , internet query ).
You can have a better and great idea about thread use in mfc from this simple post
ISSUE: How to create windows multi-threaded program in c++ ?
SOLUTION: Now a day maximum project or software has multiple process running at a same process.Or a gui application needs to do some work on background which is blocking. Or may be you are going to design or create a network application ,so it becomes mandatory to be an expert of Threading now a days.
UINT __cdecl MyClass::CallingFunctionForThread(LPVOID pParam){MyClass*pMyClass=reinterpret_cast<MyClass*>(pParam);
UINT ret =pMyClass->WorkingFunction();return ret;}
UINT MyClass::WorkingFunction(){// You can do anything as a class member function and run it on your thread.}
Start thread from any where by adding the followings --
When you are developing MFC project in most cases it becomes necessary to convert between 'CString' and 'std::string' .
SOLUTION:
'CString' to 'std::string':
CString sTest ("Matrix");
// Convert a TCHAR string to a LPCSTR
CT2CA CStringToAscii(sTest);
// construct a std::string using the LPCSTR input
std::string sResultedString (CStringToAscii);
IntelliSense: #error directive: Please use the /MD switch for _AFXDLL builds c:\program files (x86)\microsoft visual studio 10.0\vc\atlmfc\include\afxver_.h 81 3
Solution:
There's a bug where the settings of a generated MFC project would show
"Multi-threaded Debug DLL (/MDd)"; however, it doesn't pass that
argument to the intellisense engine. To workaround this problem, please
try the following:
Step 1. Right-click the Project.
Step 2. Go to
Config Properties->C/C++-> Code Gen ->. Double-click "Runtime
Library" and set to "Multi-threaded Debug DLL (/MDd)" . If this value
already appears to be set, make sure it is by selecting it again (it
should then appear as bold).
ISSUE: How to disable/enable cleint version filter on Microsoft lync server 2010/2013
SOLUTION:
Go to lync server front end. Then open lync server control panel.
In the left navigation bar, click Clients, and then click Client Version Configuration.
On the Client Version Configuration page, double-click the Global configuration in the list.
In the Edit Client Version Configuration dialog box, verify that the Enable version control check box is selected and then, under Default action, select one of the following:
Allow Allows the client to log on if the client version does not match any filter in the Client version policies list.
Block Prevents the client from logging on if the client version does not match any filter in the Client version policies list.
Block with URL Prevents the client from logging on if the client version does not match any filter in the Client version policies list, and include an error message containing a URL where a newer client can be downloaded.
Allow with URL Allows the client to log on if the client version does not match any filter in the Client version policies list, and include an error message containing a URL where a newer client can be downloaded.
If you selected Block with URL, type the client download URL to include in the error message in the URL box.
ISSUE: When a lync client make a call to a custom client this issue arise.
SIP/2.0 415 Unsupported Media Type Via: SIP/2.0/TLS
192.168.0.3:5061;branch=z9hG4bKD46A59CA.99BC04A5AF342A99;branched=FALSE;ms-internal-info="beEdEaEIWfaYJeF8c6BZ3b0XKNdvQ3PyQaRPEpAEarjbWlBLyZ_eZHbgAA" Via:
SIP/2.0/TLS
192.168.0.4:55803;branch=z9hG4bK36072482.06B5227EC88DCA9A;branched=FALSE;ms-received-port=55803;ms-received-cid=162D00 Via: SIP/2.0/TLS 192.168.0.100:50797;received=x.x.x.x;ms-received-port=50797;ms-received-cid=8C00 Record-Route:
<sip:FE.domain.local:5061;transport=tls;opaque=state:T:F:Ci.R16a800;lr;ms-route-sig=adlkYhe7OeBeVys8TvobWpLmx2HSLx-xldaLJ-jRlgx4mlBLyZI12ObwAA>;tag=D5120ECF36260EB267FB812D17DAE391 From: "Test User 3" <sip:test3@fe.local>;tag=be345768e2;epid=3bcd1d97b8 To: <sip:demouser@fe.local>;epid=13757352 Call-ID: ff8f03c39c46499db228eab1eb58fed9 CSeq: 1 INVITE
Authorization:
NTLM qop="auth", realm="SIP Communications Service", opaque="E74376CA",
targetname="FE.domain.local", version=4, crand="13757352", cnum ="5",
response="01000000ed10b4deaa20de6f64000000" Ms-client-diagnostics: 51004; reason="Action initiated by user" Content-Length: 0
WHY?
This issue arise due to inability of providing support for specific media type. In short--
If you ask a media player to play media it can play. But, if you ask a media player to open a pdf it is not possible ,because it doesn't have that feature.
ISSUE 1: When make a call in lync client after certain message transaction lync caller get 481 Call Leg Does Not Exist .
SIP/2.0 481 Call Leg Does Not Exist
Authentication-Info: NTLM qop="auth", opaque="9436E22E", srand="8E281C5D", snum="12", rspauth="010000002be81caccb7d825264000000", targetname="FE.domain.local", realm="SIP Communications Service", version=4
From: <sip:demouser@edge.com>;tag=1375799463;epid=13757994
To: <sip:test3@fe.local>;tag=D5120ECF36260EB267FB812D17DAE391
Call-ID: 2jXhMAF7GVJhUA2Y8r4181MM6OlpCbvsjhzTH2Oc
CSeq: 1 CANCEL
Via: SIP/2.0/TLS x.x.x.x:59631;branch=2OyLJ5KO1GNvDbbGyOpb1pn8l2F1tFUmjiVRcvv1;received=192.168.0.101;ms-received-port=59631;ms-received-cid=1B2E00
ms-diagnostics: 2;reason="See response code and reason phrase";HRESULT="0xC3E93C09(PE_E_TRANSACTION_DOES_NOT_EXIST)";source="FE.domain.local"
Server: RTC/4.0
Content-Length: 0
WHY?
In that case it is not your problem. It means, the call that you are referring is already destroyed or cleaned from the knowledge of lync server.
ISSUE 2: If this issue arise from remote to local or local to remote lync client call or external to internal moc call then this issue identified as another issue.
SIP/2.0 481 Call Leg/Transaction Does Not Exist
WHY?
This means your local interface of lync server is failing certificate authentication with public interface of edge server. It means that certificate assignment is not correct for local and public interface of edge server.
SOLUTION:
1. Assign public cert to edge server's external interface.
i). Make sure that cert has the FQDN of edge server (ex: edge.domain.com)
ii). Make sure that cert has the FQDN of sip server (ex:sip.domain.com)
iii). Make sure that cert has the FQDN of avauth server (ex:av.domain.com)
iv). Make sure that cert has the FQDN of access server (ex:access.domain.com)
v). Make sure that cert has the FQDN of webconf server (ex:webconf.domain.com)
2. Assign local certificate to edge server local interface. 3. Assign local certificate to a/v server local interface.
The proper assignment of certificate what to follow has provided by microsoft as follows-
ISSUE: When in a project make clean; make command is given although there is hundreds of files it only build one or first file of a project and stop building.
SOLUTION: It's easy. Just give command make clean;make all . You file find that your make file is working perfectly.
ISSUE: You can change video resolution on lync client by increasing/decreasing the capture window size. The video resolution change can be either of these following type --
ISSUE: When a lync user start call negotiation with federated user this 400 Malformed route header problem arise.
WHY?
As the federated user's are most of the case out of the local lync server and they are not the user of this local lync server edge end, they often need clear and concrete route header so that server could extract route header value in-order and route the message to remote federated client end.
SOLUTION: When a Lync caller get response (200 OK) against an INVITE request, this response has the Record route: in order of callee arrangement. So now you need to make reverse of these Route and used it in caller end. ex: if the order is 1---->3 in callee response ,in caller next request it will be 3--->1 .
SIP/2.0 488 Not Acceptable Here
Via: SIP/2.0/TLS x.x.x.x:33360;branch=18n2L9K88eMlGn7CcctT9RwKSB1FebW397VI5uG1;received=192.168.0.101;ms-received-port=33360;ms-received-cid=5D100
From: <sip:x.x.x.x:5061;transport=tls>;tag=1375467581;epid=13754675
To: <sip:test@xx.local>;epid=6c823739d0;tag=29db7c0aab
Call-ID: BHQjMXffBDJ3cWfS4CAvb2wTByEnCZT2xxb7jecK
CSeq: 1 INVITE
User-Agent: UCCAPI/4.0.7577.0 OC/4.0.7577.0 (Microsoft Lync 2010)
Ms-client-diagnostics: 52001; reason="Client side general processing error."
Content-Length: 0
CAUSE:
In that case this issue arise more invalid sdp. From sdp we can see
m=audio 41520 TCP RTP/SAVP 0 101 ---- Invalid
m=audio 41520 TCP/RTP/SAVP 0 101 ---- Valid
