Whether Webload(Radview) contains anything similar to VSTS's WebTest Connection Model's Connection Per User
Yes, in WebLOAD, it is called 'Multi threaded Virtual Clients'.
You set it up in the WebLOAD Console, Current Session Options -> Browser Parameters
Related
All required changes have been done to respective files like:
stalecheck=true,
keepalive is checked from HTTP request defaults,
retrycount=1,
hc.parameters file changes,
Socket timeout is 240000
Still we see "java.net.SocketException: Connection reset" in response data however I see the valid requests been passed to Server.
The issue wasnt till we reach 3000 users, worked smoothly till 3000 users.
Connection Reset has a lot of meaning, possible reasons are:
One of the server components is not able to handle load so it closes connections on its side
On JMeter side, check that you running in NON GUI mode and that neither JMeter JVM nor injector machine are overloaded which could explain this. See:
https://jmeter.apache.org/usermanual/get-started.html#non_gui
This is a follow-up to: Can create Websphere Queue Manager but not connect
I'm trying to set up MQ on a development machine, but if I try to connect to it using my domain account it's unable to authenticate (AMQ4999). Digging a little further I find this in the error logs:
AMQ8079: Access was denied when attempting to retrieve group membership
information for user 'xxx#domain'.
Now I'm well aware of the known issue with MQ where it fails to authenticate domain accounts since it's unable to access their member information, and have confirmed from the logs that this is definitely what's happening here, so I tried overriding this using the following script gleaned from the previous post:
DEFINE CHL('DOTNET.SVRCONN') CHLTYPE(SVRCONN) MCAUSER('MUSR_MQADMIN#hostname')
SET CHLAUTH('DOTNET.SVRCONN') TYPE(BLOCKUSER) USERLIST('nobody')
SET CHLAUTH('DOTNET.SVRCONN') TYPE(ADDRESSMAP) ADDRESS('*') USERSRC(CHANNEL) ACTION(ADD)
However, even with this channel in place I still cannot connect to the queue manager while logged into my domain account. I'm still plagued with the exact same error I was getting previously. One thing I did notice was that MQ Explorer reports the channel as inactive even though I started it (although judging by my reading from IBM's website this is normal).
I'm still very new to MQ so I think I'm either missing something or did something wrong, but ideally I would like to be able to set up a dev environment where I can hit the service without having to rely on the 'runas' command. I should also emphasize that this is strictly for dev/learning so obviously I'm not concerned about security.
Update:
I found out what I was doing wrong -- sure enough I was missing a step. A little more background. Upon creating the QM I was trying to connect to it using a simple C# client. Originally I wrote code that looked like this:
var queueManager = new MQQueueManager("MyQueueManager", MQC.MQCNO_STANDARD_BINDING);
Also, when trying to connect via MQExplorer both appears to be using my domain credentials to authenticate. However when I explicitly created a properties object and specified the channel like such:
var props = new Hashtable() {
[MQC.HOST_NAME_PROPERTY] = "localhost",
[MQC.PORT_PROPERTY] = 1414,
[MQC.CHANNEL_PROPERTY] = "DOTNET.SVRCONN",
[MQC.USER_ID_PROPERTY] = "DevMQUser",
[MQC.PASSWORD_PROPERTY] = "p#$$w0rd"
};
var queueManager = new MQQueueManager("MyQueueManager", props);
Then everything worked correctly. I still need to run MQExplorer.exe as a local user (even explicitly setting credentials in Connection Details > Properties doesn't seem to work), but this isn't a big deal.
Thanks for the suggestions.
Try changing...
SET CHLAUTH('DOTNET.SVRCONN') TYPE(ADDRESSMAP) ADDRESS('*') USERSRC(CHANNEL)
To...
SET CHLAUTH('DOTNET.SVRCONN') TYPE(ADDRESSMAP) ADDRESS('*') USERSRC(MAP) MCAUSER(MUSR_MQADMIN)
The USERSRC(CHANNEL) says to take the ID that is presented to the channel, in this case the local process ID of your logged-in account, to override MCAUSER.
MQ Security diagnostics
For connectivity issues over channels, grab SupportPac MS0P and install into MQ Explorer. Then turn on Authorization Events and Channel Events and recreate the problem. If the connection is blocked by a CHLAUTH record, this shows up in the Channel Event queue. If it is blocked by OAM it shows up in the QMgr Event queue. From Explorer with MS0P installed, right-clicking on the queue name from the Queues panel opens a context dialog that includes "Format event messages" as an option. Select is and MS0P will parse the PCF message into human-readable values that show all the parameters that were presented to MQ and why it blocked the connection.
IBM MQ v8
If this is v8 of MQ, you also have ID and password checking to configure. If the QMgr points to an AUTHINFO record that specifies ID and password checking (IDPWOS) the password can't be blank if the ID is set. Even if the password authentication is set to OPTIONAL the check will be made if an ID is present on the channel, which the client code will ensure is true unless specifically overridden.
I'm trying to simulate a connection drop using fiddler apart from adding latency to slow down the requests for a long time.
Thanks,
Sid
In Fiddler's AutoResponder, change the action for a matching Session to *drop or *reset.
See http://youtu.be/3YZvZnTQhpo?t=4m26s
I want to check whether any internet connection is available - i.e can I start webrequests expected to succeed.
IsCellularDataEnabled - is this true if there's GPRS/3G/etc available?
IsNetworkAvailble - is this true if VOICE CALLS are possible, or does this too have something to do with the internet?
IsCellularDataRoamingEnabled - Should I be concerned with this at all? (I know what Data Roaming is...)
IsWifiAvailable - If this false,I can still get internet from 3G.
So what I'm looking for is:
if (/*something*/){ //you can use the internet
}
thanks
(EDIT: I don't have a device readily available, otherwise I'd just try it out :) )
IsNetworkAvailable is true, if there is some kind of data connection available, no matter which (GPRS, 3G, Roaming, WiFi or via USB cable).
IsCellularDataEnabled is true if the phone is connected via a mobile data connection. It doesn't give you any status about Voice calls but only data.
IsCellularDataRoamingEnabled: The user is connected via a mobile data connection via a 3rd provider (roaming). You should only use a minimal amount of traffic because roaming data is often expensive for the user. (Because of that you can check this status)
IsWifiAvailable is true if you are connected via WiFi. If false there may be a mobile data connection via 3G and so on.
So, if you only want to know IF there is some kind of connection you can use IsNetworkAvailable - all other states are only giving you more detailed information about what kind of connection there is.
Only
if(NetworkInterface.GetIsNetworkAvailable()) {
}
http://msdn.microsoft.com/en-us/library/system.net.networkinformation.networkinterface.getisnetworkavailable.aspx
Your question contains a false assumption.
You want to know if there's a connection so your request is likely to succeed. Only the oppostie can be true though. You can only know that if there's no connection a request will definitely fail.
There are lots of reasons that it may not be possible to make a successful web request even if there's a connection to an external network available.
You MUST code to handle a request failing even if there is a connection.
Things that can stop a request from being successful even if there is a connection:
proxy servers or firewalls blocking the request
being connected to a local network which doesn't have access to the destination server
a slow network connection causing the request to timeout
the destination server being down/offline/unavailable
an error on the server
etc. ...
I'm open source developer implementing FTP client (WinSCP).
I'm trying to resume TLS/SSL session from the FTP control socket on the transfer socket.
Some FTP servers started to require this.
E.g. vsftpd:
https://scarybeastsecurity.blogspot.com/2009/02/vsftpd-210-released.html
I'm using OpenSSL to implement SSL layer.
I've tried the obvious way to implement the session resume, i.e. to use SSL_get1_session and SSL_set_session, like here:
https://www.linuxjournal.com/article/5487
Though it does not work. I'm still not able to connect to any FTP server requiring TLS session resume (like the vsftpd).
I have suspicion that the problem may be due to in my case, there are two parallel TLS connections, which cannot share the same TLS session. Which is different to the example on linuxjournal.com, where the first connection is closed before the other is opened.
I have also tried several ways to clone the session, e.g. using i2d_SSL_SESSION/d2i_SSL_SESSION. Didn't help either.
I'm really stuck here.
Thanks in advance for any help.
Using the SSL_get1_session and the SSL_set_session worked in the end. I must have used them incorrectly when trying the first time.
Once the TLS/SSL session on the control connection is established, use SSL_get1_session to retrieve the session.
I specifically do it from a callback set by the SSL_set_info_callback, when where & SSL_ST_CONNECT.
But for TLS 1.3 (SSL_version >= TLS1_3_VERSION), I had to use SSL_CTX_set_session_cache_mode with SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL_STORE | SSL_SESS_CACHE_NO_AUTO_CLEAR, and use a callback set by SSL_CTX_sess_set_new_cb.
Call the SSL_set_session with the reference to the control connection session, when setting up TLS/SSL session for the data connection.
You must specifically enable client session caching on your SSL_CTX object with:
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_CLIENT);
You may also need to increase the default session cache timeout (the default is 300 seconds), using SSL_CTX_set_timeout().
(You must also be creating your SSL objects from the same SSL_CTX object).