Everything is a file descriptor. Open files, sockets, loaded frameworks
bundles, even STDIN/OUT/ERROR.
You can check if you're hitting the limit of file descriptors by
(temporarily) raising the number you can have open with setrlimit(). If you
raise it and your app stops crashing,
On Feb 4, 2015, at 9:49 PM, Graham Cox graham@bigpond.com wrote:
On 5 Feb 2015, at 12:20 pm, Roland King r...@rols.org wrote:
You should google EXC_GUARD, it’s interesting.
0x400200fe
the 02 in the middle says the guard is in dup(), which it is. The 0xfe at
the end tells
the stack trace implies anyway. That
would make it hard to simply not return a valid object. Not sure what the right
design would be there - that's one for the networking architects to ponder I
guess.
Anyway, thanks for everyone's replies - I have gained a lot of insight into
things that I didn't
design would be there - that's one for the networking
architects to ponder I guess.
I don’t think that’s very graceful, no. Since the only ‘documentation’ on
EXC_GUARD seems to be in the replies in devforums it’s hard to say exactly what
the contract is. However that reply, to my reading
On 6 Feb 2015, at 11:18 am, Roland King r...@rols.org wrote:
whatever Graham did to launch his process in this case got 256, which I
haven’t yet found a way to get a process on 10.10 to do by default yet
barring making launchd launch it.
I simply double-clicked it in the Finder. This is
there is that the API is asynchronous - it creates the object which
then starts a thread to open the socket - that's what the stack trace implies
anyway. That would make it hard to simply not return a valid object. Not sure
what the right design would be there - that's one for the networking
architects
On Thu, Feb 5, 2015, at 05:54 PM, Graham Cox wrote:
On 6 Feb 2015, at 6:48 am, Greg Parker gpar...@apple.com wrote:
You can use getrlimit(RLIMIT_NOFILE, …) to query the limit in your process,
and setrlimit(RLIMIT_NOFILE, …) to attempt to raise it. The default limit
may be as low as
On 6 Feb 2015, at 8:29 am, Graham Cox graham@bigpond.com wrote:
On 6 Feb 2015, at 11:18 am, Roland King r...@rols.org wrote:
whatever Graham did to launch his process in this case got 256, which I
haven’t yet found a way to get a process on 10.10 to do by default yet
barring
On Feb 5, 2015, at 10:22 AM, Roland King r...@rols.org wrote:
Everything is a file descriptor. Open files, sockets, loaded frameworks
bundles, even STDIN/OUT/ERROR.
You can check if you're hitting the limit of file descriptors by
(temporarily) raising the number you can have open
On Feb 5, 2015, at 7:22 AM, Roland King r...@rols.org wrote:
all of which seems to indicate processes have plenty more than 256 file
descriptors available by default. I thought 256 was left behind as a default
long ago because it was way too small.
It was definitely 256 as recently as
On Thu, Feb 5, 2015, at 06:40 PM, Roland King wrote:
On 6 Feb 2015, at 8:29 am, Graham Cox graham@bigpond.com wrote:
On 6 Feb 2015, at 11:18 am, Roland King r...@rols.org wrote:
whatever Graham did to launch his process in this case got 256, which I
haven’t yet found a way
on devforums or on the networking apple
mail list as that’s where Quinn hangs out.
That sounds like a good thing to try.
--Graham
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments
On Feb 4, 2015, at 8:21 PM, Graham Cox graham@bigpond.com wrote:
Do you or anyone else know if there's some inherent limit to the number of
simultaneous sockets that can be opened? I'm supposing that there's a 1:1
correspondence between a NSURLSession and a socket, because of the
No disrespect, but after 30+ years of developing, I am roughly conversant
with debugging strategies.
My apologies, I sent my spam before noting who I was sending it to.
Of course I know you've been a coder, actually for quite a longer time
than I have.
There are some other considerations that
and
NSURLSession, I'm opening 1 socket per task as my app starts. So around 50 in
my current test situation.
if you aren’t opening your own files/creating your own filehandles I suspect
you have a bugreport in your future.
You might also try a post in CoreOS on devforums or on the networking
There are all kinds of ways that your bug could be somewhere else,
other than where the processor finds an illegal instruction that
generates an exception that yields your panic.
There are a number of strategies for dealing with this that are quite
a lot easier than single-stepping with a
Anyone seen this? My fault, or...?
OS Version:Mac OS X 10.10.2 (14C109)
Report Version:11
Anonymous UUID:41C0442D-1002-83C7-8C29-1DCC8E683B2F
Sleep/Wake UUID: 5DE82D59-D0D8-4695-A86E-23F6ABBFAEAB
Time Awake Since Boot: 30 seconds
Time Since Wake: 6200
networking, sockets and so on. It's also not
happening consistently - I had a couple of these today and then it started
working fine. I haven't seen these before either.
I do kick off a lot of these sessions at once - it kinda depends on how the
user has configured the app, but I'm currently
Hard to tell without the code that surrounds it.
On Feb 4, 2015, at 8:00 PM, Graham Cox wrote:
Anyone seen this? My fault, or...?
OS Version:Mac OS X 10.10.2 (14C109)
Report Version:11
Anonymous UUID:41C0442D-1002-83C7-8C29-1DCC8E683B2F
Sleep/Wake UUID:
You should google EXC_GUARD, it’s interesting.
0x400200fe
the 02 in the middle says the guard is in dup(), which it is. The 0xfe at the
end tells you what file descriptor it’s on. (0xfe .. really, seems unusually if
not impossibly large for a file descriptor, you got that many files
On 5 Feb 2015, at 1:53 pm, Michael Crawford mdcrawf...@gmail.com wrote:
This Spam Has Been Brought To You By:
No disrespect, but after 30+ years of developing, I am roughly conversant with
debugging strategies.
This is not an easy one to isolate, because there's very little information on
#914791
There’s a bunch more but they all say much the same thing.
if you aren’t opening your own files/creating your own filehandles I suspect
you have a bugreport in your future.
You might also try a post in CoreOS on devforums or on the networking apple
mail list as that’s where Quinn hangs
I have an app which attempts to make an internet connection after receiving an
NSWorkspaceDidWake notification. Most of the time, the connection fails with
the error, ...internet connection appears to be offline (-1009). My guess is
the the OS has not yet reinitialized networking before my app
is the the OS has not yet reinitialized networking before my app
attempts to connect. So I added a sleepForInterval:10 to make my app wait a
bit before connecting. This seems to work just fine, but question is:
Is there a more elegant way to handle this?
Use the (C-level) SCNetworkReachability API
connection appears to be offline (-1009). My
guess is the the OS has not yet reinitialized networking before my app
attempts to connect. So I added a sleepForInterval:10 to make my app wait a
bit before connecting. This seems to work just fine, but question is:
Is there a more elegant way to handle
In working on some networking code, I've come across one test machine on our
local net that has extremely slow performance. Like orders of magnitude slower
than normal, on the same local network and using the same method (airport,
through a single router) as other machines that work just fine
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 11/22/10 5:31 PM, Graham Cox wrote:
In working on some networking code, I've come across one test machine
on our local net that has extremely slow performance. Like orders of
magnitude slower than normal, on the same local network and using
Perhaps the bandwidth has been limited using ipfw or a similar utility?
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at
On 23/11/2010, at 12:31 PM, Graham Cox wrote:
In working on some networking code, I've come across one test machine on our
local net that has extremely slow performance.
OK, looks like my Airport hardware is up the swanee.
Cut a long story short - none of the suggested diagnostics turned
and more
confused instead so far...
Thank you in advance...
James
On 2009/8/5, at 上午 2:13, Luke the Hiesterman wrote:
On Aug 4, 2009, at 11:10 AM, James Lin wrote:
Bonjour is for local area network, right?
No, Bonjour is applicable to any networking, local or wide area.
Here's some
and its
standard input), then use a conventional web server to do the actual
networking part. You could either put arguments into a POST (perhaps
send a block of XML that you can then parse at the Foundation end), or
you could stick them in the URL, and so on.
The benefit of that approach
My goal:
1. 1 iPhone running my app working as a server waiting for
connection from another iPhone from the internet.
2. Another iPhone running my app working as a client connects to
the server iPhone and send a string hi, I am James.
3. The server iPhone, upon receiving this string reply
On 6 Aug 2009, at 09:13, Roland King wrote:
I've never seen any. I assume that as well as multicast dns there
are ways to configure bonjour to point to some central DNS server
which would enable something like that to work
Yes, you can use regular unicast DNS, and query a specified DNS
On 6 Aug 2009, at 09:27, James Lin wrote:
[...]
keeps querrying the php/mysql server for message left for it with a
querry to php/mysql server inside a NSTimer (say querry once every
30 seconds).
[...]
Is this my best option given what I want to accomplish?
I'm afraid it isn't,
Can you please elaborate a bit more?
What technology option do I have when it comes to a messaging server?
What's involved on the iPhone's side?
Thank you in advance...
James
On 2009/8/6, at 下午 4:33, Keith Duncan wrote:
On 6 Aug 2009, at 09:27, James Lin wrote:
[...]
keeps querrying the
On 6 Aug 2009, at 09:27, James Lin wrote:
Is this my best option given what I want to accomplish?
Thanks in advance...
Stepping back a little bit. Are you trying to build some sort of real
time messaging service? Or does it matter if the second phone doesn't
receive the message
well...I guess you can call it some sort of real time messaging
service...
I just need to send a string from iPhoneA to iPhoneB.
And allow iPhoneB to reply with another string back to iPhoneA.
That's all I am trying to do.
I had no idea it is so difficult and involves so much.
given my state
On Aug 4, 2009, at 4:42 PM, Shawn Erickson wrote:
On Tue, Aug 4, 2009 at 11:13 AM, Luke the Hiestermanluket...@apple.com
wrote:
On Aug 4, 2009, at 11:10 AM, James Lin wrote:
Bonjour is for local area network, right?
No, Bonjour is applicable to any networking, local or wide area
On Aug 4, 2009, at 4:42 PM, Shawn Erickson wrote:
Of course, in the context of the original question (re: iPhone
networking), the iPhone is almost never going to have a public IP
address (being hidden behind WiFi or cell phone NATs).
Assuming cell carriers don't get off their butts
a string hello, I am James to the server
iPhone and the server iPhone reply with the user's choice of either Hi,
Nice to meet you or Get lost! strings.
Unless the two phones are on the same local WiFi network, due to the way
that various NATs (especially with cell phone networking), a client
Hi all,
Does anyone know the limitation of the iPhone simulator when it comes
to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket.
1. is by opening up a CFSocket
2. is by a socket wrapper class called LXSocket class obtained from
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket.
1. is by opening up a CFSocket
2. is by a socket wrapper
Safari works for me too...
The reason I am asking this seemingly redundant question is simply :
I don't have an iPhone yet (3GS won't be available in my country until
end of Aug)
and I am doing all my programming blind on the simulator.
if networking is crippled on the simulator, that means
on the simulator.
if networking is crippled on the simulator, that means my
development work has to take a break until
I get my hands on an actual iPhone..
Does anyone know?
Thank you in advance...
James
On 2009/8/4, at 下午 9:04, John C. Randolph wrote:
On Aug 4, 2009, at 5:43 AM, James Lin wrote
Networking should work on the simulator. There are several networking
related pieces of sample code that work on the simulator.
http://developer.apple.com/iphone/library/navigation/SampleCode.html
Luke
On Aug 4, 2009, at 6:48 AM, James Lin wrote:
Safari works for me too...
The reason I am
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket.
By server socket, do you mean you are trying to connect
again...
James
On 2009/8/4, at 下午 11:50, Dave Camp wrote:
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket
to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket.
By server socket, do you mean you are trying to connect to a
server somewhere, or that you are trying to open a low numbered
(i.e. 1024) port locally so that you can be a server
, I am James to the
server iPhone and the server iPhone reply with the user's choice of
either Hi, Nice to meet you or Get lost! strings.
Unless the two phones are on the same local WiFi network, due to the
way that various NATs (especially with cell phone networking), a
client will almost
and banging my head against the wall...
Any ideas/suggestions are greatly appreciated...
Thanx again...
James
On 2009/8/4, at 下午 11:50, Dave Camp wrote:
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking
/suggestions are greatly appreciated...
Thanx again...
James
On 2009/8/4, at 下午 11:50, Dave Camp wrote:
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking?
Is it crippled on the simulator?
I've tried two
networking), a
client will almost certainly not be able to connect to a server
running on the phone. Basically, the phone see only a local
(private) network, and will have an address such as 10.3.5.12.
Unfortunately, that IP address is meaningless outside of local
network (there is no way
, Dave Camp wrote:
On Aug 4, 2009, at 5:43 AM, James Lin wrote:
Hi all,
Does anyone know the limitation of the iPhone simulator when it
comes to networking?
Is it crippled on the simulator?
I've tried two seperate ways of opening up a server socket.
By server socket, do you mean you are trying
On Tue, Aug 4, 2009 at 11:13 AM, Luke the Hiestermanluket...@apple.com wrote:
On Aug 4, 2009, at 11:10 AM, James Lin wrote:
Bonjour is for local area network, right?
No, Bonjour is applicable to any networking, local or wide area. Here's some
sample code.
http://developer.apple.com/iphone
? You can't just send
arbitrary binary data to an HTTP server and expect it to work. You
have to follow the HTTP protocol as defined in the relevant RFCs.
So, my question is, does anybody know of any other ways - or good
beginner's guides - to networking in situations like
to send an arbitrary data package to it and get
one in return.
So, my question is, does anybody know of any other ways - or good
beginner's guides - to networking in situations like this?
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com
I am trying to create a networking feature for my application. What
should I use?
- BSD Sockets
- CF...
- NSSocketPort
- ...
And where is some decent information about the subject.
I would love to work a bit closer with the Core Foundation, but I am
afraid it is going down the same drain
On Wed, Apr 15, 2009 at 3:29 PM, Filip van der Meeren
fi...@code2develop.com wrote:
I am trying to create a networking feature for my application. What should I
use?
You're going to have to be more specific than that. What *kind* of
networking feature? Loading a web resource? Acting
On 15 Apr 2009, at 21:39, I. Savant wrote:
On Wed, Apr 15, 2009 at 3:29 PM, Filip van der Meeren
fi...@code2develop.com wrote:
I am trying to create a networking feature for my application. What
should I
use?
You're going to have to be more specific than that. What *kind* of
networking
/GS_Networking/
... and here ...
http://developer.apple.com/samplecode/Networking/idxCocoa-date.html
--
I.S.
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators
Hi,
What’s the best way to create a connection to a server in Cocoa + Objective-C ?
Is there another way than BSD sockets or CFSocketRef ?
___
Valentin Dan, Software Developer Direct: +1 905 886 1833
16:52
To: Valentin Dan
Cc: cocoa-dev@lists.apple.com
Subject: Re: networking question
On 10 Apr 2008, at 14:24, Valentin Dan wrote:
What’s the best way to create a connection to a server in Cocoa +
Objective-C ?
It depends what you're trying to achieve.
If your server is also implemented
On 10 Apr 2008, at 15:22, Valentin Dan wrote:
A few more details :)
- server: Windows (so absolutely not Cocoa)
- communication : XML messages (need to both send receive messages)
What kind of XML messages? Over what kind of transport? HTTP?
Something else? XML on its own is just a
On Mar 25, 2008, at 10:41 AM, Robert Claeson wrote:
Is there an API/framework to interface with the SMB/Samba/Windows
networking functionality of OS X? More specifically, I need to:
* Find the Active Directory domain (or Windows workgroup name if not
in an AD network)
* Ensure that the OS
Is there an API/framework to interface with the SMB/Samba/Windows
networking functionality of OS X? More specifically, I need to:
* Find the Active Directory domain (or Windows workgroup name if not
in an AD network)
* Ensure that the OS X user is authenticated via AD (if available)
As you
65 matches
Mail list logo
