Root Access

That Brazilian Guy

12:32 AM

@Bob Wait, this phone is only AUD 19?

Is it carrier locked? What GSM frequencies?

And... HOW SO CHEAP?!

Journeyman Geek

carrier locked I suspect

That Brazilian Guy

"No lock in contracts". No mention on hardware GSM lock-ins.

> 4G IS AVAILABLE IN ALL CAPITAL CBDS AND ASSOCIATED AIRPORTS, MOST SURROUNDING SUBURBAN AREAS AND IN OVER 600 REGIONAL AREAS. IN OTHER COVERAGE AREAS AROUND AUSTRALIA, YOU’LL SWITCH TO 3G.

Uh...? What? Is that some sort of "fake" 4G?

> BAND SUPPORT:
Network: 3G: 850/2100MHz
GSM/EDGE:900/1800/1900MHz

Fakeness intensifies

Bob

@ThatBrazilianGuy The network supports 4G. The phone doesn't.

That Brazilian Guy

> Handsets are locked to the Telstra network. Network unlocking fees apply.

No mention of the fees on the site :(

Bob

@ThatBrazilianGuy It's cheap and pretty shoddy :P imei.info/phonedatabase/105496-zte-b815

That Brazilian Guy

12:45 AM

@Bob From the specs looks like it's better than a Defy and worse than a Moto G 1st gen.

Still, for AUD 19 it's a steal!

Shitty camera, tho.

Nice as a backup phone or as a second phone for work-only activity

Bob

@ThatBrazilianGuy sure, I'll just add it to my pile of backup phones :P

That Brazilian Guy

1:00 AM

If I were to buy one (and if they shipped to Brazil), UPS shipping AU -> BR is 7 times the price of the phone itself. =/

Journeyman Geek

of all the things I could get stuck in my head....

I have one particular arrangement of "the hedgehog cannot be buggered at all"

That Brazilian Guy

Better than getting a catchy jingle from a biometry TV AD >_<

Campanha Biometria 2017/2018

►

Journeyman Geek

I know accessisibility and all

but the signer is having too much fun

also, those finger look vaguely....

That Brazilian Guy

@JourneymanGeek familiar?

Journeyman Geek

not quuuuuuite what I was thinking.

That Brazilian Guy

1:15 AM

They don't look like penises, if that's what you mean.

Journeyman Geek

tooootally do

rightmost one on the thumbnail is especially bad

That Brazilian Guy

...now Youtube is suggesting me all kinds of kid videos.

Mahna...Mahna

►

Mahna Mahna in Japanese, with giant mechas, by a Brazilian singer:

Pato Fu - Made in Japan (Best Quality)

►

LegionMammal978

1:35 AM

wait, wut

IP has protocols for splitting messages across Ethernet packets

TCP has protocols for splitting messages across IP packets

and HTTP has protocols for splitting messages across TCP packets

(and a standard HTML web page will split its content into multiple HTTP requests)

Bob

there's no such thing as an Ethernet packet. you might be thinking of Ethernet frames

a TCP/IP packet is a single thing

HTTP does not have any idea what a TCP packet is. it views the connection as a simple stream.

also I swear I had this exact same conversation like half a year ago

That Brazilian Guy

> HTTP has protocols for splitting messages across TCP packets

Wait, what?!

Bob

if you want to be specific, TCP has segments but they're fully encapsulated in a single IP packet

LegionMammal978

Argh, I can't terminology today

Bob

huh. nevermind, TIL there actually is an Ethernet packet, while a frame is the payload

LegionMammal978

1:43 AM

But yeah, I was thinking about fragmented IP

And then you have TCP buffering and HTTP continuation

(That's what I was trying to refer to, but I can't language)

That Brazilian Guy

@LegionMammal978 Isn't HTTP a protocol in itself? And wouldn't the underlying TCP packest be totally transparent to HTTP?

Bob

qasd will probably come in and say everything I said was all wrong :P

@LegionMammal978 yea, fragmentation is ... funny

That Brazilian Guy

@Bob Who's qasd? @FML?

Bob

I suppose you could consider a single TCP segment to be fragmented across multiple IP packets

LegionMammal978

But yeah, I guess it's more about the payloads being split

Bob

1:46 AM

I need to remind myself how fragmented IDs work

LegionMammal978

IP fragments can form a single payload of TCP, buffered TCP can form a single payload of HTTP, HTTP continuations can form a single payload of HTML, etc.

Bob

yea sorry, forgot about the fragment offset field

@LegionMammal978 "buffered TCP" is tautological :P

LegionMammal978

@ThatBrazilianGuy Yes, and yes. Because HTTP is supported over a stream, you can send a message over however many TCP packets you want.

@Bob Explain?

Bob

@LegionMammal978 TCP is always buffered

to quote the spec:

> Processes transmit data by calling on the TCP and passing buffers of
data as arguments.

That Brazilian Guy

@LegionMammal978 Doesn't it directly contradict what you said earlier?

> and HTTP has protocols for splitting messages across TCP packets

LegionMammal978

1:54 AM

How is it buffered when, say, the entire payload is pushed at once, @Bob?

Bob

@LegionMammal978 You never interact with individual TCP segments/packets. The only interface the protocol exposes to higher levels is a buffer (stream)

LegionMammal978

@ThatBrazilianGuy Ah, as I said, I can't terminology, it's not so much having protocols as not being able to care

@Bob Makes sense, I guess

Bob

To the caller, you never know or care whether the payload requires multiple segments.

If you do care, you should be using UDP

LegionMammal978

I've been looking at Wireshark for an hour too long

Bob

('course, for optimisation you might look at MSS, etc.)

LegionMammal978

1:56 AM

Keeping track of various ports sending requests is tedious

Bob

@LegionMammal978 also I feel like I have to point out that an HTTP request must go over a single TCP connection

if the connection is interrupted, the entire request must be retried

That's assuming the TCP implementation (on both ends) reports the error if it's interrupted, and doesn't silently hide/retry it...

(same goes for any other protocol you put it over; HTTP technically doesn't require TCP)

this is more relevant if a proxy/tunnel/VPN is involved

LegionMammal978

And if the stream underlying TCP is interrupted temporarily, then the interrupted segment should be quietly resent and re-buffered, correct?

That is, as long as the TCP connection is maintained

Bob

@LegionMammal978 as long as TCP can do so, yes. but if TCP hits a reset (RST) or times out, HTTP will start over - it won't try to continue the previous request over a new stream

at least that's the case for all known implementations... the spec is rather more vague

LegionMammal978

So HTTP just sees entire connections, and TCP just sees a potentially faulty underlying packet-based protocol, if I'm understanding this correctly

So how does TCP not get interrupted by fragmented IP?

Bob

aha!

> 8.2.4 Client Behavior if Server Prematurely Closes Connection

they even suggest a backoff algorithm :P

LegionMammal978

2:05 AM

@Bob lol, reminds me of trying to write a program in C to properly create HTTP requests and receive the responses

Bob

@LegionMammal978 yea, that's a fun one...

LegionMammal978

It's a real pain

Bob

far as I can tell, the TCP sequence numbers are not touched

so you'll have multiple IP fragments with fragment offsets

LegionMammal978

But you'd think there'd have to be some IP buffering in order to have coherent TCP segments

Bob

that get reassembled into a single TCP segment with that same sequence number

@LegionMammal978 if you assume the whole layering thing, TCP is not aware that anything has come in until all IP fragments have been received

@LegionMammal978 IP spec (RFC 791) doesn't specify how reassembly must be performed

but they do provide an "example" (I assume in modern language that means "MAY")

> For each datagram the buffer identifier is computed as the
concatenation of the source, destination, protocol, and
identification fields. If this is a whole datagram (that is both
the fragment offset and the more fragments fields are zero), then
any reassembly resources associated with this buffer identifier
are released and the datagram is forwarded to the next step in
datagram processing.

If no other fragment with this buffer identifier is on hand then
reassembly resources are allocated. The reassembly resources

Basically, yes, there's a buffer :P

LegionMammal978

2:09 AM

Oh well, 0x011, bye

Bob

@LegionMammal978 0x011?

@JourneymanGeek This guy actually has backups! :D superuser.com/questions/1267717/…

Journeyman Geek

2:53 AM

Oh Em Gee

I should buy a lottery ticket

unrelatedly...

my dad's toilet has a stained floor

Tried floor cleaner, bleach...

guess what worked ...

Diet coke ._.

Bob

3:17 AM

In David Jones voice Beauty! — winny 8 hours ago

@JourneymanGeek ^

Journeyman Geek

... I READ IT IN THAT VOICE ;p

Rikai

5:41 AM

@JourneymanGeek quack

user226528

6:15 AM

@JourneymanGeek Only cadaver dogs

Journeyman Geek

@FleetCommand and my gran's late ratter

Burgi

8:55 AM

morning

Journeyman Geek

Woof

Burgi

@ThatBrazilianGuy not sure i follow you...

user226528

9:07 AM

@JourneymanGeek Are you saying your gran had a vermin terrier or are you referring to a social worker?

user226528

(Wweeeee I am a necromancer!)

Journeyman Geek

@FleetCommand or some varient there of.

Burgi

we watched the first season of stranger things over the weekend

really enjoyed it

user226528

I watched the first season of Blacklist. I feel I could have wasted my time in a more honorable fashion.

user226528

These yanks have lost their mojo. They don't know how to make good films anymore.

user226528

9:11 AM

I've even heard the American House of Cards is cancelled.

Burgi

er... yes....

they've cancelled house of cards because the lead actor has been accused of multiple counts of child molestation

user226528

9:41 AM

@Burgi I just read a brief plotline of House of Cards and the story of Kevin Spacey getting accused. It is funny how they resemble each other.

user226528

I am not proposing that the show producers are resorting to the same ugly tactics featured in the show. No.

user226528

I am just saying it is ... funny.

That Brazilian Guy

@Burgi It's ~~a remote code execution tool that also is~~ an image resizing library for WordPress. It fell out of favor back in 2011 after a huge vulnerability was found out. And it's unnecessary as WordPress has built-in image resizing functions since... I don't know when.

Journeyman Geek

@ThatBrazilianGuy I thought Wordpress was a remote code execution tool that was also, incidentally a blog... ;p

hides

That Brazilian Guy

WordPress is the Windows of CMS's.
(I hate Windows and don't know what to make of it)

Journeyman Geek

9:50 AM

(I run it ._.)

That Brazilian Guy

@JourneymanGeek WordPress, or Windows??

A: "yes".

Journeyman Geek

@ThatBrazilianGuy actually yes

but not wordpress on windows

That Brazilian Guy

That would be... Silly? Insane? A challenge? Ultimately pointless?
That would be like trying to run an old O/S currently, or an old browser on modern websites! Who would do that just for fun? No one here, surely!

Journeyman Geek

hah

My first webserver was.... my desktop ;p

so totally did that, tho not wordpress

it was err.... en.wikipedia.org/wiki/Xitami