HTTP Post

Hi,

I am writing a C++ program which needs to post an XML to an HTTP
server periodically and the program will run on different platforms
including w32, linux, and unix.

I see that there are some library available out there including cURL
and Libwww from w3c. I will spend some time on them myself but if
anyone are familiar with them, please share know how good they
compile/run on different platforms. Also, if there is a better HTTP
library out there, I appreciate if anyone will bring that to my
attention.

Since I need only the POST command, I'm also thinking about writing it
myself using socket. That may be even less time consuming. Am I wrong?
Any thought is greatly appreciated.

Thanks,
Andy

re: HTTP Post

Andy Lai wrote:[color=blue]
> I am writing a C++ program which needs to post an XML to an HTTP
> server periodically and the program will run on different platforms
> including w32, linux, and unix.
>
> I see that there are some library available out there including cURL
> and Libwww from w3c. I will spend some time on them myself but if
> anyone are familiar with them, please share know how good they
> compile/run on different platforms. Also, if there is a better HTTP
> library out there, I appreciate if anyone will bring that to my
> attention.
>
> Since I need only the POST command, I'm also thinking about writing it
> myself using socket. That may be even less time consuming. Am I wrong?
> Any thought is greatly appreciated.[/color]

Here is a thought: this is a C++ _language_ newsgroup. Unless you have
a _language_ question, you should find a different newsgroup, where your
issue is on topic. Try comp.infosystems.www.***

V

re: HTTP Post

Victor,

Since you seem to be the self-appointed hall-monitor for
this forum, I have a question for you.

Suppose someone has a question of the form

How to do X in C++?

where X bears no immediate relation to C++ other than it
is a general programming task which can be done in C++.
Do you consider such a question off-topic at comp.lang.c++?
If so why? In what newsgroup group should it be posted?

Suppose there is a newsgroup Z.Y.X. Would the question then
be on-topic for that newsgroup? What if there is a Victor
that haunts Z.Y.X who says

Here is a thought: this is an X newsgroup. Unless you have
an X question, you should find a different newsgroup, where
your issue is on topic. Try comp.lang.c++*.
[color=blue]
> Here is a thought: this is a C++ _language_ newsgroup. Unless you have
> a _language_ question, you should find a different newsgroup, where your
> issue is on topic. Try comp.infosystems.www.***[/color]

Keith

Exercise 1) generalize your logic to questions of the form

Q = X1 X2

and deduce whether Q is on topic at either, both, or neither
of newsgroups Z1.Y1.X1 and Z2.Y2.X2.

re: HTTP Post

Keith H Duggar wrote:
[color=blue]
> Victor,
>
> Since you seem to be the self-appointed hall-monitor for
> this forum, I have a question for you.[/color]

It's not just Victor that supports the goal of topicality, so disabuse
your pissy little self of that bogus idea.
[color=blue]
> Suppose someone has a question of the form
>
> How to do X in C++?
>
> where X bears no immediate relation to C++ other than it
> is a general programming task which can be done in C++.
> Do you consider such a question off-topic at comp.lang.c++?[/color]

I do.
[color=blue]
> If so why? In what newsgroup group should it be posted?[/color]

Usually comp.programming, unless you can be more specific.
[color=blue]
> Suppose there is a newsgroup Z.Y.X. Would the question then
> be on-topic for that newsgroup?[/color]

Who knows? You start out by checking to see if they have a FAQ list
that covers topicality and you read the group to find out what sort of
messages are typically posted.

Another whiny crybaby who can't be bothered to follow basic netiquette.




Brian

re: HTTP Post

I see that you, Keith, think it's better to be able to ask _any_ question
_anywhere_. You probably don't realize that if a group is not concerned
solely on ONE topic it'll become useless pretty soon. That's why Victor
pointed that __this___ question is not for here. And all its answers are not
for here either, because this might lead more and more people asking how to
make their brain new combo-box with the newest XYX IDE and this will destroy
the usefullness of the group.
How you judge whether it's for here or not - despite other things - a simple
"common sense". And to answer your question:
"How to do X in C++?"
__Everything__ that can be done on computer can be done in C++, actually
more things thatn in Java, C#, PHP, etc. Of course, it can be proven that
all languages are theoretically equal, but that's another story. So - do you
think that here you can ask about everything concerning computers?
-Jonan


"Keith H Duggar" <duggar@alum.mit.edu> wrote in message
news:108e0e93.0411121256.2421436f@posting.google.c om...[color=blue]
> Victor,y_
>
> Since you seem to be the self-appointed hall-monitor for
> this forum, I have a question for you.
>
> Suppose someone has a question of the form
>
> How to do X in C++?
>
> where X bears no immediate relation to C++ other than it
> is a general programming task which can be done in C++.
> Do you consider such a question off-topic at comp.lang.c++?
> If so why? In what newsgroup group should it be posted?
>
> Suppose there is a newsgroup Z.Y.X. Would the question then
> be on-topic for that newsgroup? What if there is a Victor
> that haunts Z.Y.X who says
>
> Here is a thought: this is an X newsgroup. Unless you have
> an X question, you should find a different newsgroup, where
> your issue is on topic. Try comp.lang.c++*.
>[color=green]
> > Here is a thought: this is a C++ _language_ newsgroup. Unless you have
> > a _language_ question, you should find a different newsgroup, where your
> > issue is on topic. Try comp.infosystems.www.***[/color]
>
> Keith
>
> Exercise 1) generalize your logic to questions of the form
>
> Q = X1 X2
>
> and deduce whether Q is on topic at either, both, or neither
> of newsgroups Z1.Y1.X1 and Z2.Y2.X2.[/color]

re: HTTP Post

"Keith H Duggar" <duggar@alum.mit.edu> wrote in message news:108e0e93.0411121256.2421436f@posting.google.c om...[color=blue]
> Victor,
>
> Since you seem to be the self-appointed hall-monitor for
> this forum, I have a question for you.[/color]

That statement is an unmistakable sign of a problem here.
You must be very new to Usenet since you are apparently
ignorant of the fact that topicality is always enforced (when
enforced) by volunteers in the unmoderated newsgroups.
[color=blue]
> Suppose someone has a question of the form
>
> How to do X in C++?
>
> where X bears no immediate relation to C++ other than it
> is a general programming task which can be done in C++.
> Do you consider such a question off-topic at comp.lang.c++?[/color]

I certainly consider it off-topic.
[color=blue]
> If so why?[/color]

Because the topic here is focused on C++ language issues
and issues that arise due to specific features of C++ that
are not common to most programming languages.
[color=blue]
> In what newsgroup group should it be posted?[/color]

comp.programming would be a good start, unless there is
something more specifically pertinent.
[color=blue]
> Suppose there is a newsgroup Z.Y.X. Would the question then
> be on-topic for that newsgroup? What if there is a Victor
> that haunts Z.Y.X who says[/color]

Victor does not "haunt" this newsgroup. He provides good
topical advice and helps keep it topical, a service to those who
participate as either question posers or question answerers.
[color=blue]
> Here is a thought: this is an X newsgroup. Unless you have
> an X question, you should find a different newsgroup, where
> your issue is on topic. Try comp.lang.c++*.[/color]

[From a post preceeding Mr. Duggar's, The following material
appears to have been quoted from Victor's post without attribution.][color=blue][color=green]
>> Here is a thought: this is a C++ _language_ newsgroup. Unless you have
>> a _language_ question, you should find a different newsgroup, where your
>> issue is on topic. Try comp.infosystems.www.***[/color]
>
> Keith
>
> Exercise 1) generalize your logic to questions of the form[/color]

Since Victor is not a student of yours, and has no reason to
undertake self-improvement with your guidance, why should
he go along with your "exercise" suggestions? You would do
well to drop the attitude here.
[color=blue]
> Q = X1 X2
>
> and deduce whether Q is on topic at either, both, or neither
> of newsgroups Z1.Y1.X1 and Z2.Y2.X2.[/color]

Since you seem to prefer matters simplified, and seem to have
oversimplified the issue for purposes of argumentation, let's
consider a concrete form of your abstract "exercise".

Suppose there is a newsgroup about carpentry. Suppose there
is another newsgroup about structural engineering. According
to your implied reasoning, a question such as "How do I build
a foot bridge with wood?" would be topical in either place.

--
--Larry Brasfield
email: donotspam_larry_brasfield@hotmail.com
Above views may belong only to me.

re: HTTP Post

> I see that you, Keith, think it's better to be able to ask _any_ question[color=blue]
> _anywhere_.[/color]

Striking exaggeration of what I actually asked.
[color=blue]
> You probably don't realize that if a group is not concerned
> solely on ONE topic it'll become useless pretty soon.[/color]

The question isn't whether this group should be concerned
with "ONE topic". The question was whether the OP's post
was within that "ONE topic".
[color=blue]
> That's why Victor pointed that __this___ question is not for here[/color]

In his opinion, which I dispute.
[color=blue]
> And all its answers are not for here either[/color]

Then why are you answering?
[color=blue]
> because this might lead more and more people asking how to make
> their brain new combo-box with the newest XYX IDE and this will
> destroy the usefulness of the group.[/color]

"might" is not a good enough justification for censoring topics
that some consider topical.
[color=blue]
> How you judge whether it's for here or not - despite other things - a simple
> "common sense".[/color]

I agree, and my common sense tells me Victor was wrong. I bet
the OP would have made it into c.l.c++.m as numerous similar
posts have made it. And, I consider the moderators to have
more than reasonable common sense. (see also my response to
"Default Jerk")
[color=blue]
> And to answer your question: "How to do X in C++?"
> __Everything__ that can be done on computer can be done in
> C++, actually more things thatn in Java, C#, PHP, etc. ...
> So - do you think that here you can ask about everything
> concerning computers?[/color]

If you asking how to do it in C++, yes I would say so. Or
at most they should simply be ignored. These outbursts by
the self-important "false" moderators effect no good. Though
an answer or polite nudging to a more appropriate newgroup
(if there is one) is helpful.

re: HTTP Post

> > Suppose someone has a question of the form[color=blue][color=green]
> >
> > How to do X in C++?
> >
> > where X bears no immediate relation to C++ other than it
> > is a general programming task which can be done in C++.
> > Do you consider such a question off-topic at comp.lang.c++?[/color]
>
> I do.
>[color=green]
> > If so why? In what newsgroup group should it be posted?[/color]
>
> Usually comp.programming, unless you can be more specific.
>[color=green]
> > Suppose there is a newsgroup Z.Y.X. Would the question then
> > be on-topic for that newsgroup?[/color]
>
> Who knows? You start out by checking to see if they have a FAQ list
> that covers topicality and you read the group to find out what sort of
> messages are typically posted.[/color]

Do you respect the judgment of the c.l.c++ moderators? If so
take a look at the topics in c.l.c++.m over the last week.
By your and Victor's reasoning all of the following threads
are off-topic

"Convert CString to HEX" victor participated
"Threading: early days" threads off topic
"Lint and boost"
"Mutex implementation"
"Loki visitor question"
"c++ libray for http protocol"
"Errors using RogueWave template class"

CString, Lint, Boost, Loki, and RogueWave are not part of
the C++ language. And the blessed Victor even posted in the
"off topic" CString discussion. C++ does not support
concurrency so threading and mutexes are not part of the
language. (By the way threading is a very common topic in
c.l.c++* despite the fact that C++ is not a concurrent
language.) Finally the question about http protocol libraries
is very similar to the spirit of this original post.

So if the moderators felt all those topics were topical,
where do you get off claiming they are not and why should we
care what you claim? Especially when you don't even have the
guts to associate your foul comments with your real identity.
[color=blue]
> It's not just Victor that supports the goal of topicality, so disabuse
> your pissy little self of that bogus idea.[/color]
[color=blue]
> Another whiny crybaby who can't be bothered to follow basic netiquette.[/color]

One need only read those two comments to see that it is you
who whines and can't be bothered with basic netiquette (or
even common civility for that matter).

re: HTTP Post

>[color=blue]
> Do you respect the judgment of the c.l.c++ moderators? If so
> take a look at the topics in c.l.c++.m over the last week.
> By your and Victor's reasoning all of the following threads
> are off-topic
>
> "Convert CString to HEX" victor participated
> "Threading: early days" threads off topic
> "Lint and boost"
> "Mutex implementation"
> "Loki visitor question"
> "c++ libray for http protocol"
> "Errors using RogueWave template class"
>[/color]

comp.lang.c++.moderated is a different group, no doubt they have a different
idea of topicality there.

Bottom line is that if you don't like the way this group operates you can
always leave.

john

re: HTTP Post

> comp.lang.c++.moderated is a different group, no doubt[color=blue]
> they have a different idea of topicality there.[/color]

No, they have the same view of topicality. But, let's
suppose you are right and c.l.c++ and c.l.c++.m are very
different. Fine, take a look at some recent c.l.c++ topics
in which the community actively participated without
complaint

Design question: N-dimensional tensors
library problems
C++/CLI
PDF/HTML Output Class
Fox: best GUI Lib
ncurses
Accelerated C++: [1,rows] Not so fast

By your standard these are all "off-topic" and yet even Victor
participated in the first two! And you, John, decided to post
in these "off-topic" topics

strang behaviour std:vector and XString in VC6.0
Survey: Frequency of usage of smart pointers
Design question: N-dimensional tensor

XStrings and VC6.0 are not part of the C++ language. Neither
are tensors and smart pointers (other than auto_ptr). And in
the tensor thread you responded by posting a link to boost
which is certainly not part of the C++ language. So aren't
you being a hypocrite? Or in the very least your opinion of
topicality is inconsistent.
[color=blue]
> Bottom line is that if you don't like the way this group
> operates you can always leave.[/color]

Bottom line, your hypocritical opinion doesn't carry much
weight. Furthermore, you have absolutely no control over
what others post in c.l.c++. So the best thing you can do is
simply ignore threads you feel are "off-topic" and let others
judge for themselves.

re: HTTP Post

"Larry Brasfield" <donotspam_larry_brasfield@hotmail.com> wrote[color=blue][color=green]
> > Victor,
> >
> > Since you seem to be the self-appointed hall-monitor for
> > this forum, I have a question for you.[/color]
>
> That statement is an unmistakable sign of a problem here.
> You must be very new to Usenet since you are apparently
> ignorant of the fact that topicality is always enforced (when
> enforced) by volunteers in the unmoderated newsgroups.[/color]

Either you don't know what "enforce" means or you are new
to Usenet. It should be clear that nothing is being enforced
or we wouldn't even be having this conversation.

The only power these demi-moderators have is to encourage
or point in the right direction. And frankly, when they
become rude and whiny (as they sometimes do) they perform
a disservice, not a service to the Usenet community. If a
demi-moderator can't express their opinion politely then
they should express no opinion at all and simply ignore the
post they feel is "off-topic".
[color=blue]
> Victor does not "haunt" this newsgroup.[/color]

He most certainly does. (Take a look in a dictionary for
both "haunt" and "enforce".)
[color=blue]
> He provides good
> topical advice and helps keep it topical, a service to those who
> participate as either question posers or question answerers.[/color]

Not when he becomes pretentious.
[color=blue][color=green]
> > Exercise 1) generalize your logic to questions of the form[/color]
>
> Since Victor is not a student of yours, and has no reason to
> undertake self-improvement with your guidance, why should
> he go along with your "exercise" suggestions?[/color]

For the same reasons that you decided to go along with my
exercise.
[color=blue][color=green]
> > Q = X1 X2
> >
> > and deduce whether Q is on topic at either, both, or neither
> > of newsgroups Z1.Y1.X1 and Z2.Y2.X2.[/color]
>
> Since you seem to prefer matters simplified, and seem to have
> oversimplified the issue for purposes of argumentation, let's
> consider a concrete form of your abstract "exercise".
>
> Suppose there is a newsgroup about carpentry. Suppose there
> is another newsgroup about structural engineering. According
> to your implied reasoning, a question such as "How do I build
> a foot bridge with wood?" would be topical in either place.[/color]

Absolutely! I'm glad the exercise paid off and helped you
to see my point. Building a bridge from wood would most
definitely involve both carpentry and structural engineering.
Thus, the question would certainly be on topic at both groups
though each group would probably address only the portions of
the question relevant to their group.

Indeed, I recently saw two Nova historical reconstruction
documentaries. In one they rebuilt two medieval catapults,
in the other an ancient Chinese wooden bridge

http://www.pbs.org/wgbh/nova/lostemp...na/builds.html

The teams working on these projects had both carpenters and
structural engineers working to achieve the same goal and
answer the same questions.

Thank you for completing the exercise with such a wonderful
example!

Keith

re: HTTP Post

"Keith H Duggar" <duggar@alum.mit.edu> wrote in message
news:108e0e93.0411132342.2e06d711@posting.google.c om...[color=blue][color=green]
>> comp.lang.c++.moderated is a different group, no doubt
>> they have a different idea of topicality there.[/color]
>
> No, they have the same view of topicality. But, let's
> suppose you are right and c.l.c++ and c.l.c++.m are very
> different. Fine, take a look at some recent c.l.c++ topics
> in which the community actively participated without
> complaint
>
> Design question: N-dimensional tensors
> library problems
> C++/CLI
> PDF/HTML Output Class
> Fox: best GUI Lib
> ncurses
> Accelerated C++: [1,rows] Not so fast
>
> By your standard these are all "off-topic" and yet even Victor
> participated in the first two! And you, John, decided to post
> in these "off-topic" topics
>
> strang behaviour std:vector and XString in VC6.0
> Survey: Frequency of usage of smart pointers
> Design question: N-dimensional tensor
>
> XStrings and VC6.0 are not part of the C++ language.[/color]

Just because someone mentions something that is not part of the C++ language
in the subject line does not make the post off topic.
[color=blue]
> Neither
> are tensors and smart pointers (other than auto_ptr). And in
> the tensor thread you responded by posting a link to boost
> which is certainly not part of the C++ language. So aren't
> you being a hypocrite? Or in the very least your opinion of
> topicality is inconsistent.[/color]

Where have you heard that my definition of on topic is 'part of the C++
language'. That is not my definition. You've clearly been trawling my
previous posts to find examples of 'hypocrasy', no doubt if you look hard
enough you will find examples of that, and bad manners too. Personally I
think I make a valuable contribution to this group by answering lots of
posters queries to the best of my ability, something I've yet to see from
you.
[color=blue]
>[color=green]
>> Bottom line is that if you don't like the way this group
>> operates you can always leave.[/color]
>
> Bottom line, your hypocritical opinion doesn't carry much
> weight. Furthermore, you have absolutely no control over
> what others post in c.l.c++. So the best thing you can do is
> simply ignore threads you feel are "off-topic" and let others
> judge for themselves.[/color]

I rarely just say off topic. 99% of off topic posts concern Windows
programming, and I almost always redirect people who make such posts. I
consider this to be a service both to the poster and to this group. Most of
the time I am polite about it.

Historically this group has been taken over by Windows programming questions
leaving nowhere to discuss pure C++ related issue, that is why this group is
touchy about topicality.

john

re: HTTP Post

"Keith H Duggar" <duggar@alum.mit.edu> wrote...[color=blue]
>[..blahblah.. hypocritical ..blah blah..][/color]

Do you have a point or do you just need a pissing match?

This is a free forum. Unmoderated. That means I can post here
whatever I like and as much as I like. Just like you can. Just
like many others can. Hell, anybody can.

Now, when arguing about topicality (which in itself is always on
topic, by the netiquette rules), you need to ultimately step back
and think (assuming an MIT graduate is capable of that), can you
actually bring in hypocracy when you yourself participated in
some off-topic discussions? Isn't that hypocracy in itself?

Now, don't rush to answering. Spend a few minutes evaluating your
response. And for the argument's sake, try not to make it, how
did you put it?, pretentious, hypocritical, haunting, or enforcing
something that is either not supposed to be enforced or simply
cannot be enforced. Did I cover all of it?

Now, to answer your questions.[color=blue]
>Suppose someone has a question of the form
>
> How to do X in C++?
>
>where X bears no immediate relation to C++ other than it
>is a general programming task which can be done in C++.
>Do you consider such a question off-topic at comp.lang.c++?[/color]

Yes.
[color=blue]
>If so why?[/color]

You answered it already. And you know the answer, too: because
it has no immediate relation to C++.
[color=blue]
> In what newsgroup group should it be posted?[/color]

If it is tryly a "general programming task", comp.programming.
If it's something platform-specific, like "create a bitmap" or
"make sure only one instance of the program is running", then in
a newsgroup for that platform. Read the FFAQ.

re: HTTP Post

In message <108e0e93.0411140021.5b67a8a9@posting.google.com >, Keith H
Duggar <duggar@alum.mit.edu> writes[color=blue]
>"Larry Brasfield" <donotspam_larry_brasfield@hotmail.com> wrote[/color]

[biiig context-destroying snip]
[color=blue]
>Not when he becomes pretentious.
>[color=green][color=darkred]
>> > Exercise 1) generalize your logic to questions of the form[/color][/color][/color]

A most amusing juxtaposition.

--
Richard Herring

re: HTTP Post

Keith H Duggar wrote:

[This message didn't show up on my regular news service, so I'll have
to get at it from google]
[color=blue][color=green]
> > Who knows? You start out by checking to see if they have a FAQ list
> > that covers topicality and you read the group to find out what sort[/color][/color]
of[color=blue][color=green]
> > messages are typically posted.[/color]
>
> Do you respect the judgment of the c.l.c++ moderators?[/color]

For my own postings? By and large yes. Please show some
counter-examples if you feel that I've been breaking topicality.
[color=blue]
> If so
> take a look at the topics in c.l.c++.m over the last week.
> By your and Victor's reasoning all of the following threads
> are off-topic[/color]

Ok. Sounds reasonable to me. I didn't bother to read any of those
because they were off-topic.

[color=blue]
> CString, Lint, Boost, Loki, and RogueWave are not part of
> the C++ language.[/color]

I tend to agree on Boost, but the consensus here seems to be that Boost
features will be migrating to the Standard eventually. I point out
every now and then that they aren't there yet.
[color=blue]
> And the blessed Victor even posted in the
> "off topic" CString discussion.[/color]

So? I don't know exactly what he contributed, as I didn't read it. Did
he actually post off-topic material? Or did he find topical elements
withing the thread? I've done that.
[color=blue]
> So if the moderators felt all those topics were topical,[/color]

What "moderators" are you talking about? There's just people here, no
one has any special powers. That doesn't mean we need to let things run
amok.
[color=blue]
> where do you get off claiming they are not and why should we
> care what you claim? Especially when you don't even have the
> guts to associate your foul comments with your real identity.[/color]

Oh, those were "foul"? As for my identity, why do you care? You
planning on dropping by the house? I'm out of beer, BTW.

I'm a long-time participant of CLC++. I sometimes get lazy about typing
my last name, but I'll make sure it's here this time. No doubt that
will comfort you greatly.
[color=blue][color=green]
> > It's not just Victor that supports the goal of topicality, so[/color][/color]
disabuse[color=blue][color=green]
> > your pissy little self of that bogus idea.[/color]
>[color=green]
> > Another whiny crybaby who can't be bothered to follow basic[/color][/color]
netiquette.[color=blue]
>
> One need only read those two comments to see that it is you
> who whines and can't be bothered with basic netiquette (or
> even common civility for that matter).[/color]

Calls 'em as I sees 'em. You whined and cried (the same whiny crybaby
thread we have every now and then from somebody deeply offended because
their basic usenet ineptitude was exposed).


Brian RODENBORN

re: HTTP Post

Richard Herring wrote[color=blue]
> Keith H Duggar wrote
>
> [biiig context-destroying snip]
>[color=green]
> >Not when he becomes pretentious.
> >[color=darkred]
> >> > Exercise 1) generalize your logic to questions of the form[/color][/color]
>
> A most amusing juxtaposition.[/color]

Indeed, I thought so as well.
You know, fight fire with fire.
Give him a taste of his own medicine.

re: HTTP Post

"Keith H Duggar" <duggar@alum.mit.edu> wrote...[color=blue]
> Richard Herring wrote[color=green]
>> Keith H Duggar wrote
>>
>> [biiig context-destroying snip]
>>[color=darkred]
>> >Not when he becomes pretentious.
>> >
>> >> > Exercise 1) generalize your logic to questions of the form[/color]
>>
>> A most amusing juxtaposition.[/color]
>
> Indeed, I thought so as well.
> You know, fight fire with fire.
> Give him a taste of his own medicine.[/color]

LOL