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00:29 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/dma21A
00:29 RacketCommitBot: [racket/master] fix NSProcessInfo arguments hack - Matthew Flatt
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07:36 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/H5hSpw
07:36 RacketCommitBot: [racket/master] Synch German string constants with latest. - Mike Sperber
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10:46 wtetzner: hey guys, i'm having a problem with getting the value of a malloc into a byte string
10:46 wtetzner: if i do (make-cvector* value _byte size), i get '(70 85 76 76 95 80 82 79 70 73 76 69 0)
10:46 wtetzner: but when i do (ptr-ref value _bytes), my repl crashes
10:46 wtetzner: any idea what i'm doing wrong?
10:48 ohwow: what's the output of (ctype? _bytes)?
10:48 wtetzner: #t
10:49 ohwow: hm strange
10:49 ohwow: are you sure that value is cpointer?
10:50 wtetzner: (cpointer? value) returns #t
10:55 wtetzner: maybe i need to loop over the bytes and copy them into a byte string?
11:04 wtetzner: ah, calling (make-sized-byte-string value size) works
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11:32 ohwow: is mred-designer still useful/alive?
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12:54 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/7geuBw
12:54 RacketCommitBot: [racket/master] better fix for TransformProcessType issue - Matthew Flatt
12:54 RacketCommitBot: [racket/master] cocoa: distinguish CFBundleIdentifier for 64-bit vs. 32-bit apps - Matthew Flatt
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13:18 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/IS7I2A
13:18 RacketCommitBot: [racket/master] cocoa, gtk: enable auto list-box% horizontal scrollbars - Matthew Flatt
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16:42 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/p75c_w
16:42 RacketCommitBot: [racket/master] avoid custodian shutdown during atomic FFI callback - Matthew Flatt
16:42 RacketCommitBot: [racket/master] racket/gui: fix excessive `on-size' and `on-move' callbacks - Matthew Flatt
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16:57 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/mQhDYQ
16:57 RacketCommitBot: [racket/master] win32: fix `get-file-list' with a single file result - Matthew Flatt
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19:58 vercingetorix: Hi, I am using MzScheme and am working mostly in the interpreter. I am building a site off of this and it works fine when the interpreter is running. Is there a way to have long-running process exist without having the interpreter open all the time?
20:00 neilv: 1. yes, you can run racket programs pretty much like any other programs. 2. you probably want to be using racket 5.x, not mzscheme 4.x or whatever you're using
20:00 vercingetorix: i'm using mzscheme 372
20:01 vercingetorix: after that lists are immutable so that doesn't work for me
20:01 bremner: you can have mutable lists in racket
20:01 offby1: vercingetorix: just so you know: mzscheme 372 is insanely outdated.
20:01 offby1: if it works for you, fine; but just know that you're probably two major versions behind
20:02 bremner: http://docs.racket-lang.org/reference/mpairs.html?q=mutable%20lists&q=mutable%20lists
20:02 rudybot: http://tinyurl.com/42f77mz
20:02 vercingetorix: offby1: my uses don't require new things, this is the most stable version i've found for my app
20:02 offby1: curiously enough, rudybot is PLT scheme running on ec2
20:02 offby1: vercingetorix: you can put any scheme program into a file, and run the file with "mzscheme your-file-name-here.ss"
20:03 offby1: if your program doesn't exit, then it'll keep running ... without the repl
20:03 (quit) jonrafkind: Read error: Operation timed out
20:03 offby1: simple as that
20:03 offby1: the same is true for more or less any language.
20:04 offby1: vercingetorix: I suspect either you're not asking your real question, or else I'm misunderstanding.
20:05 vercingetorix: so basically i have the interpreter doing something on port 8080 serving a site. i do the launching normally from the mzscheme interpreter
20:05 vercingetorix: i'm wondering how do i keep the process running with the interpreter and my ssh session closed?
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20:06 vercingetorix: nb: i haven't really done something like this before
20:06 vercingetorix: that's why the question is a little noobish. also am noob at vms, haven't used one ever.
20:09 offby1: vercingetorix: aha, you are indeed asking the question I suspected you were asking.  The short answer is: "gnu screen"
20:09 offby1: there is also tmu
20:09 offby1: there is also tmux
20:09 offby1: there are probably a couple of other solutions, but "screen" works so well, and is so widespread, that I wouldnt' waste time with any others
20:10 offby1 is using it at this very moment
20:10 vercingetorix: hmm, i see from wiki it keeps my session running even after leaving ssh session?
20:10 vercingetorix: how is this possible?
20:13 (part) vercingetorix: "bye and thanks everyone"
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21:09 offby1: screen is actually two programs:
21:09 offby1: a daemon and a client
21:10 offby1: the daemon is the "parent" of your mzscheme program.
21:10 offby1: The daemon never dies.
21:10 offby1: the client connects to the daemon
21:10 offby1: it's the client that dies when you close your ssh connection, but the daemon keeps on keepin on
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21:11 neilv: i haven't thought there's actually a daemon, but that's a reasonable conceptual model for explaining to a user
21:13 offby1: pretty sure there is
21:13 offby1: run "ps" some time
21:13 neilv: are you doing detach, or process backgrounding?
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21:14 neilv: oh, i see reference to a daemon option. i've never used it in a bazillion years
21:15 offby1 stares blankly
21:15 offby1: isn't that the whole point?
21:15 offby1: I type "screen -Rd" a couple times a day.
21:15 offby1: (actually I type "screen-wrapper.pl -Rd" instead for tedious technical reasons)
21:16 neilv: i've always thought you reattach to ptys, with some record-keeping in a plain file, no daemon
21:17 offby1: I actually don't know
21:17 neilv: pardon my off-topic tangent
21:19 shofetim: neilv: offby1: I'm pretty sure neilv is correct. If I start a screen session, detach it, and run ps aux | grep screen there is no screen process (daemon) running. Yet a screen -R will re-attach to it.... I'm not sure what magic is going on : )
21:20 flaggy: shofetim: there is, but it's called SCREEN
21:21 shofetim: flaggy: huh... there is, that must be its magic : )
21:41 neilv: anyway, "screen" is a convenient way to casually run racket servers.  i have used it for things like research prototypes, and for tools with web interfaces that i was running temporarily
21:42 neilv: i had one "screen" session that ran with a racket-based webcrawler in it for around a year
21:43 neilv: (btw, my mistake on the daemon.  it looks like i have been using "screen" for 20 years, and all this time it might have been leaving a "SCREEN" process around to hold the ptys, and i didn't know it)
21:44 offby1 dances like an idiot in the end zone
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21:52 vercingetorix: Hi, I came here earlier and asked about amazon EC2 and deploying MzScheme there. I'm at the stage where I have to pick an AMI and was wondering which one the rudybot here is using.
21:52 offby1: aha
21:52 offby1: hold on a second
21:53 offby1: it's one of the ones that Amazon supplies itself
21:53 vercingetorix: is the string "mzscheme" or "scheme" in it's name?
21:53 vercingetorix: i can't find any with that
21:54 vercingetorix: if there isn't, can we download the scheme we want from repos and the like?
21:54 vercingetorix: is this vm image basically like a root-access vps?
21:55 offby1: oh no
21:55 offby1: you won't find an AMI whose name includes "scheme".
21:55 offby1: You have to install mzscheme (or racket or whatever) yourself
21:55 offby1: the virtual machine is basically a freshly-installed Linux box
21:56 vercingetorix: cool
21:56 vercingetorix: i can do that
21:56 vercingetorix: thanks
21:56 neilv: i'm almost certainly going to make a racket plus stripped-down debian ec2 ami. but not immediately
21:56 offby1: amzn-ami-2011.02.1.i386-ebs (ami-3bc9997e)
21:56 offby1: neilv: ooh ooh
21:57 offby1: I bet there's some command-line tool I could have run that would have emitted that info.  But I've never explored under /opt/aws
21:57 vercingetorix: cool
21:58 neilv: sorta like i did http://lildeb.org/ - starting with stripped-down, stripping it down more, and then building it up with useful bits that will fit
21:58 vercingetorix: theoretically, couldn't one make an AMI of their desktop computer as a way to back it up?
21:58 vercingetorix: on ec2 for later in case of something happening?
21:58 neilv: i might do a custom kernel too, since you don't need much device drivers
21:58 offby1: vercingetorix: theoretically, maybe; practically, I doubt it
21:58 vercingetorix: what kinds of things do AMIs save? is it basically like an .iso you download from a distro's site?
21:59 offby1: yep
21:59 vercingetorix: cool, i'll look into google to see how to generate one, seems intriguing
21:59 offby1: except you don't have to run an installer, or partition the disk, or anything; basically you choose the AMI you want, click "start", and (in a minute or two) there it is
21:59 offby1: vercingetorix: I'd not worry about making your own AMI until you've played around with a pre-made one for a while.
22:01 vercingetorix: here's the one i grep'd that i'd like to use, what exactly is the id?
22:01 vercingetorix: IMAGE	aki-6cb44705	099720109477/ubuntu-kernels-sandbox/ubuntu-lucid-i386-linux-image-2.6.32-313-ec2-v-2.6.32-313.25import1-kernel	099720109477	available	public		i386	kernel				instance-store	paravirtual	xen
22:01 vercingetorix: the aki-6cb44705 part? or the 099... part?
22:02 dmac: I'm trying to build a web server that responds to POST requests. But whenever I try to make a post request to the built-in server, it seems to hang indefinitely. The docs say that the bulit-in web server tries to hide the specifics of GET/POST, so does that make what I want impossible with the built-in server?
22:03 neilv: dmac: you might want to post on the "users" email list, with a little more detail. i don't think the right person is on irc right now
22:03 neilv: http://lists.racket-lang.org/users/
22:04 dmac: neilv: great, thanks
22:06 neilv: http://wiki.debian.org/Cloud/AmazonEC2Image
22:06 neilv: i think i will try one of these next
22:06 vercingetorix: sweet think i found one
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22:09 vercingetorix toasts on his first ec2 instance
22:21 offby1: that didn't take long
22:21 offby1: when's the wedding?
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22:25 vercingetorix: offby1: when i finish this screen tut and have a working news.arc install facing the web :)
22:30 offby1: ah, an arc fan
22:30 offby1: that's why you're using the old mzscheme
22:50 vercingetorix: yeah
22:51 vercingetorix: strange, i've added authd port 8080 to be opened with 'ec2-authorize default -p 8080' yet I can't see anything when i go to the my ip :(
22:51 vercingetorix: is there something i'm missing?
22:51 vercingetorix: http://ec2-50-17-159-121.compute-1.amazonaws.com/
22:51 eli: vercingetorix: arc runs on newer rackets.
22:51 vercingetorix: eli: the install on the site still recommends 372 for some reason
22:52 vercingetorix: someone linked me today saying lists are mutable again, so theoretically i could use that
22:52 vercingetorix: are there security benefits to upgrading?
22:52 eli: vercingetorix: That's because they never updated it.
22:52 vercingetorix: probably
22:52 eli: (Not probably, I have worked with them on arc.)
22:53 eli: In any case, the way it works on newer versions is with a C-level hack that I've added that allows mutation of the new immutable pairs.
22:54 neilv frowns
22:54 eli: That's different from mpairs, which is what bremner pointed you at.
22:55 neilv: mpairs are a pain. they don't interoperate with pairs in other libraries. but i am horrified at the thought of someone mutating my immutable pairs
22:55 vercingetorix: oh, do i have to re-deploy or something to have the ec2-authorize rules updated?
22:55 eli: neilv: My hack is done through the ffi, where I can mutate anything.
22:56 eli: They could have translated it to work with mpairs, but chose not to.
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22:57 offby1: vercingetorix: I think you're already beyond my ec2 knowledge.
22:57 vercingetorix: you've been of great help offby1, i'm asking in #startups now
22:58 vercingetorix: much obliged, you are a gentleman and a scholar
22:58 offby1: it's true, I am
22:58 rudybot: indeed
22:58 vercingetorix: is there an official (or unofficial) amazon web services channel somewhere?
22:58 offby1: dunno.  Try #aws
22:58 vercingetorix: banned on freenode :(
22:59 offby1: but you're on freenode _now_.
22:59 vercingetorix: no, #aws is one of the "unavailable"/banned channels on freenode
22:59 offby1: ##aws looks vaguely alive
22:59 vercingetorix: along with the rest of the seedier ones like #niggers and the like
22:59 offby1: no complaints from me on that one.
23:00 vercingetorix: great success ##aws
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23:04 vercingetorix: this is so nice, now i just have to make sure this screen thing works persistently so i don't come back with everything erased ;)
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23:25 offby1: works for me
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23:25 vercingetorix: christ, is this normal for screen to hang like this??
23:26 vercingetorix: i've had to kill my xterm (locally) twice now
23:26 vercingetorix: no response from screen (taken fresh now from ubuntu 10.04.2 lucid install -- also fresh)
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23:42 MaXim_: try tmux
23:43 offby1: vercingetorix: how are you invoking it?
23:43 MaXim_: it's a little smarter than screen
23:43 vercingetorix: screen -r after sshing in
23:43 MaXim_: did you detach it first?
23:43 offby1: I always do "screen -rd"
23:43 MaXim_: it might freeze while detaching because whatever its detaching cant be contacted
23:43 offby1: and no, it's not normal for it to hang; you should see a shell prompt.
23:44 offby1: (sometimes you think it hasn't done anything, since it doesn't display anything other than that shell prompt)
23:44 MaXim_: for example i logged on on some machine and used screen, but then disconnected the network adapter
23:44 vercingetorix: offby1: well, that's the thing, it started hanging before i could
23:44 vercingetorix: so i had to just sort close the xterm on my local side and hope for the best
23:44 MaXim_: but the ssh daemon thinks its still connected
23:44 offby1: you might still have the daemon running
23:44 MaXim_: screen -d will hang in that instance
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