I work with quite a big environment, which I am not familiar with most of it. There is now a DUT error reported by a checker. The problem is - the checker gets data items via ports. Is there an e method that can show which monitors are connected to the checker (so that I can see which monitor drove the bad data)? Also - how can I tell where in the code the checker was connected to the monitors?
there are several ways to debug external and internal port bindings:
1) You can use the get_inbound_set() on a specific port to get all the ports it is bound to.
2) Trace commands:
to debug procedural connections:(do_bind() or connect()) - use “trace bind”.
for static generation binding (keep bind()) - use “trace gen”.
3) we recommend using the procedural approach : connect() & do_bind() , as it simplifies the debugging , and does not burden the generator.
just a side note, you can also use:
"trace esi" : use this trace only up until the run phase , to see the full attribute list that was given to every port in your environment
"show ports" : show you information about a specific port or all ports in your environment , read the doc to see what kind of information can be seen. it is recommended to use this command after all of the port bindings are done.
Related
BitBake fails for me because it can't find https://www.example.com.
My computer is an x86-64 running native Xubuntu 18.04. Network connection is via DSL. I'm using the latest versions of the OpenEmbedded/Yocto toolchain.
This is the response I get when I run BitBake:
$ bitbake -k core-image-sato
WARNING: Host distribution "ubuntu-18.04" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR: OE-core's config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
Fetcher failure for URL: 'https://www.example.com/'. URL https://www.example.com/ doesn't work.
Please ensure your host's network is configured correctly,
or set BB_NO_NETWORK = "1" to disable network access if
all required sources are on local disk.
Summary: There was 1 WARNING message shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
The networking issue, the reason why I can't access www.example.com, is a question for the SuperUser forum. My question here is, why does BitBake rely on the existence of www.example.com? What is it about that website that is so vital to BitBake's operation? Why does BitBake post an Error if it cannot find https://www.example.com?
At this time, I don't wish to set BB_NO_NETWORK = "1". I would rather understand and resolve the root cause of the problem first.
Modifying poky.conf didn't work for me (and from what I read, modifying anything under Poky is a no-no for a long term solution).
Modifying /conf/local.conf was the only solution that worked for me. Simply add one of the two options:
#check connectivity using google
CONNECTIVITY_CHECK_URIS = "https://www.google.com/"
#skip connectivity checks
CONNECTIVITY_CHECK_URIS = ""
This solution was originally found here.
For me, this appears to be a problem with my ISP (CenturyLink) not correctly resolving www.example.com. If I try to navigate to https://www.example.com in the browser address bar I just get taken to the ISP's "this is not a valid address" page.
Technically speaking, this isn't supposed to happen, but for whatever reason it does. I was able to work around this temporarily by modifying the CONNECTIVITY_CHECK_URIS in poky/meta-poky/conf/distro/poky.conf to something that actually resolves:
# The CONNECTIVITY_CHECK_URI's are used to test whether we can succesfully
# fetch from the network (and warn you if not). To disable the test set
# the variable to be empty.
# Git example url: git://git.yoctoproject.org/yocto-firewall-test;protocol=git;rev=master
CONNECTIVITY_CHECK_URIS ?= "https://www.google.com/"
See this commit for more insight and discussion on the addition of the www.example.com check. Not sure what the best long-term fix is, but the change above allowed me to build successfully.
If you want to resolve this issue without modifying poky.conf or local.conf or any of the files for that matter, just do:
$touch conf/sanity.conf
It is clearly written in meta/conf/sanity.conf that:
Expert users can confirm their sanity with "touch conf/sanity.conf"
If you don't want to execute this command on every session or build, you can comment out the line INHERIT += "sanity" from meta/conf/sanity.conf, so the file looks something like this:
Had same issue with Bell ISP when accessing example.com gave DNS error.
Solved by switching ISP's DNS IP to Google's DNS (to avoid making changes to configs):
https://developers.google.com/speed/public-dns/docs/using
At the moment I'm using Taskflow to specify my test workflow. I'm trying to understand if Robotframework can be used for my tests scenario.
For example, my typical test is:
- Start traffic on device1
- While traffic is flowing:
- Collect via SSH realtime traffic data on device2
- Collect via SSH realtime traffic data on device3
- Stop traffic on a device1
- Get output data from device2 and device3
- Check outputs
I did not find any workflow detail for Robotframework. Is it possible to design such a test in RF?
Riccardo
I believe it can be used for your scenario.
Robot Framework uses external libraries such as SSHLibrary
Here is a documentation to said library with description of concepts, keywords you can use and with examples.
A lot of things are generally possible with Robot Framework as you can always expand it's capabilities by writing your own external libraries if the commonly used ones are not matching your needs.
But it seems that this library might do exactly what you need.
You can open several connections
You can start/execute command
You can log to file or read output
...
I'm working on a coreaudio user-space hal plugin based on the example
developer.apple.com/library/mac/samplecode/AudioDriverExamples/Introduction/Intro.html
In the plug-in implementation, I plan to obtain audio data from another process i.e. CFMessagePort
However, I got the following error in console trying to create port CFMessagePortCreateLocal...
sandboxd[251]: ([2597]) coreaudiod(2597) deny mach-register com.mycompnay.audio
I did some googlging and came to this article
Technical Q&A QA1811
https://developer.apple.com/library/mac/qa/qa1811/_index.html
about adding AudioServerPlugIn_MachServices in plist but still no success.
Is there anything else I need to do to make this work (like adding entitlements, code-sign) or this is not the correct approach.?
I am not sure if MesssagePort mechanism works anymore under sandbox. would XPC Services be viable?
Thank you very much for your time. Any help is greatly appreciated
update 1:
I should be creating a remote port instead of a local in the audio plug-in. Having that said, with the AudioServerPlugIn_MachServices attribute in the plist. now there is no sandboxd[559]: ([552]) coreaudiod(552) deny mach-lookup / register message in console.
However, in my audio hal plug-in (client side) I have
CFStringRef port_name = CFSTR("com.mycompany.audio.XPCService");
CFMessagePortRef port = CFMessagePortCreateRemote(kCFAllocatorDefault, port_name);
port has return the value of 0. I tried this in a different app and it works just fine.
This is my server side:
CFStringRef port_name = CFSTR("com.mycompany.audio.XPCService");
CFMessagePortRef port = CFMessagePortCreateLocal(kCFAllocatorDefault, port_name, &callback, NULL, NULL);
CFRunLoopSourceRef runLoopSource =
CFMessagePortCreateRunLoopSource(nil, port, 0);
CFRunLoopAddSource(CFRunLoopGetCurrent(),
runLoopSource,
kCFRunLoopCommonModes);
CFRunLoopRun();
I did get a console message regarding this.
com.apple.audio.DriverHelper[1314]: The plug-in named SimpleAudioPlugIn.driver requires extending the sandbox for the mach service named com.mycompnay.audio.XPCService
anyone know why??
update 2
I noticed that when I use the debug mode with coreaudiod it does successful get the object reference of the mach service. (same thing happened when I was trying the xpc_service approach)
project scheme setting
Anyone??
I'm pretty sure I was running into the same problems in my AudioServerPlugIn. I could look up and use every Mach service I tried, except for the ones I had created. And the ones I had created worked normally from a regular process.
Eventually I read the Daemonomicon and figured out that coreaudiod (which hosts the HAL plugins) was using the global bootstrap namespace, but my service was being registered in the per-user bootstrap namespace. And since "processes using the global namespace can only see services in the global namespace" my plugin couldn't see my service.
You can use launchctl to test this by having it run the program that registers your service, but with the same bootstrap namespace as coreaudiod. You'll probably need to have rootless disabled.
# launchctl bsexec $(pgrep coreaudiod) your_service_executable
With that running, try to connect from your plugin again.
From Table 2 in the Daemonomicon, you can see that only launchd daemons use the global bootstrap namespace. That explains why coreaudiod uses it. And I think it means that your Mach service needs to be created by a launchd daemon.
To make one, create a launchd.plist for your service in /Library/LaunchDaemons. Set its owner to root:wheel and make it only writable by the owner. In it, set the MachServices key and add the name of your service:
<key>MachServices</key>
<dict>
<key>com.mycompany.audio.XPCService</key>
<true/>
</dict>
Then register it:
# launchctl bootstrap system /Library/LaunchDaemons/com.mycompany.audio.XPCService.plist
This is what I ended up with: com.bearisdriving.BGM.XPCHelper.plist.template. Note that without the UserName/GroupName keys your daemon will run as root. (The code for my service and plugin is in that repo as well, in case that's helpful.)
I ended up having to use XPC, unfortunately, but I tried CFMessagePort first and it worked fine.
It also seems to all work fine whether the plugin is signed or not. Though, as you say, you do need the AudioServerPlugIn_MachServices key in your Info.plist.
I am using the Remote System software on Eclipse. I can successfully log in to my FTP account but when I try to view the directories, I get the following message:
Message: Operation failed due to network I/O error
'java.net.SocketException: Connection reset by peer: socket write
error'
Any ideas are welcome.
Looks like there could be some negotiation issue.
Try following solution:
I've got the same exception and in my case the problem was in a
renegotiation procecess. In fact my client closed a connection when
the server tried to change a cipher suite. After digging it appears
that in the jdk 1.6 update 22 renegotiation process is disabled by
default. If your security constraints can effort this, try to enable
the unsecure renegotiation by setting the
sun.security.ssl.allowUnsafeRenegotiation system property to true.
http://www.oracle.com/technetwork/java/javase/overview/tlsreadme2-176330.html
Setting the System Properties/Mode Configuration The various modes are
set using the corresponding system properties, which must be set
before the SunJSSE library is initialized. There are several ways to
set these properties:
From the command line:
% java -Dsun.security.ssl.allowUnsafeRenegotiation=true Main Within
the application:
java.lang.System.setProperty("sun.security.ssl.allowUnsafeRenegotiation",
true); In the Java Deployment environment (Plug-In/Web Start), there
are several ways to set the system properties. (See Java Web App and
Next Generation Web Browser Plugin for more information.)
Use the Java Control Panel to set the Runtime Environment Property on
a local/per-VM basis. This creates a local deployment.properties file.
Deployers can also distribute a enterprise-wide deployment.properties
file by using the deployment.config mechanism. (See Deployment
Configuration File and Properties.)
To set a property for a specific applet, use the HTML subtag
"java_arguments" within the tag. (See Java Arguments.)
To set the property in a specific Java Web Start application or applet
using the new Plugin2 (6u10+), use the JNLP "property" sub-element of
the "resources" element. (See Resources Element.)
I am using an NSNetServiceBrowser to find services on my network. It can find them, but is unable to resolve any of them, neither mine nor the ones built in to my computer. When I check the domain of the unresolved service, I get "." for each one. The host is also always "(null)" when I NSLog it. In addition, it appears that the name of the service is actually the first part of the type (eg. I publish my service with type "_iListen._tcp." and the name shows up as "_iListen". The type also shows up as "_tcp.local."). My code for searching for services is:
[browser searchForServicesOfType:#"_services._dns-sd._udp." inDomain:#""];
Note: This is being done on an iPhone.
Browsing for "_services._dns-sd._udp." is a meta-query which lists all service types in the network. It makes no sense to resolve the responses. See Technical Q&A QA1337.
You have to browse for "_iListen._tcp." to find services of your type.
The "dns-sd" tool can be used on the OS X command line to test browsing/lookup/resolving.