I am trying to send a GET request to a PHP file uploaded on web by ESP8266, but I want do it directly by serial monitor. Every thing is right and the GET request sends correctly but the PHP file does not execute.
When I try to call the PHP file in browser and run http://readsensor.epizy.com/esp_post.php?temperature=11&humidity=11 it executes and data changes correctly on web.
Here is my serial monitor
AT+CIPSTART="TCP","readsensor.epizy.com",80
CONNECT
OK
AT+CIPSEND=85
OK
>
Recv 85 bytes
SEND OK
+IPD,1099:HTTP/1.1 200 OK
Server: nginx
Date: Sun, 15 Jul 2018 12:59:01 GMT
Content-Type: text/html
Content-Length: 870
Connection: keep-alive
Vary: Accept-Encoding
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control: no-cache
<html><body><script type="text/javascript" src="/aes.js" ></script>
<script>function toNumbers(d){var e=[];d.replace(/(..)/g,function(d)
{e.push(parseInt(d,16))});return e}function toHex(){for(var d=
[],d=1==arguments.length&&arguments[0].constructor==Array?
arguments[0]:arguments,e="",f=0;f<d.length;f++)e+=
(16>d[f]?"0":"")+d[f].toString(16);return e.toLowerCase()}var
a=toNumbers("f655ba9d09a112d4968c63579db590b4"),b=toNumbers
("98344c2eee86c3994890592585b49f80"),c=toNumbers
("248813c2e30a32e656e03e29a770b794");document.cookie="__test=
"+toHex(slowAES.decrypt(c,2,a,b))+"; expires=Thu, 31-Dec-37 23:55:55 GMT;
path=/"; location.href="http://readsensor.epizy.com/esp_post.php?
temperature=40&humidity=40&i=1";</script><noscript>This site requires
Javascript to work, please enable Javascript in your browser or use a browser
with Javascript support</noscript></body></html>CLOSED
Because of this part of response
This site requires Javascript to work, please enable Javascript in your browser or use a browser with Javascript support
I checked my web browser to enable script and even changed it but still I facing this error.
My server is NGINX. Is there a problem with the server?
Look at the error message.
This site requires Javascript to work, please enable Javascript in your browser or use a browser with Javascript support
Then look at the code that is returned by the server:
document.cookie="__test="+toHex(slowAES.decrypt(c,2,a,b))+"; expires=Thu, 31-Dec-37 23:55:55 GMT;
It sets a cookie…
location.href="http://readsensor.epizy.com/esp_post.php?
temperature=40&humidity=40&i=1";
… then redirects the browser.
So either:
You are requesting a URL which isn't http://readsensor.epizy.com/esp_post.php, and then the JavaScript doesn't run, and you never request the PHP or
The PHP checks to see if a cookie is set, and if it is not, it outputs JavaScript to set it, and then redirect to run the script again.
If the problem is the former, then you just need to change your code to request the first URL in the first place.
If it is the latter, then you'll need to send the cookie data. You might be able to hard code that into your program, or you might need to parse the response to extract the right values for the cookie from the script.
Related
When I did a networks course I learned about HTTP Request and Response messages and I know how to code in php reasonably enough to get around. Now my question is, the PHP has to have some link to HTTP request and response message but how. I can't seem to see the link between the two. My reasoning for asking this is that I am using the Twitter API console tool to query their api. The tool sends the following HTTP request:
GET /1.1/search/tweets.json?q=%40twitterapi HTTP/1.1
Authorization:
OAuth oauth_consumer_key="DC0se*******YdC8r4Smg",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1410970037",oauth_nonce="2453***055",oauth_version="1.0",oauth_token="796782156-ZhpFtSyPN5K3G**********088Z50Bo7aMWxkvgW",oauth_signature="Jes9MMAk**********CxsKm%2BCJs%3D"
Host:
api.twitter.com
X-Target-URI:
https://api.twitter.com
Connection:
Keep-Alive
and then I get a HTTP response:
HTTP/1.1 200 OK
x-frame-options:
SAMEORIGIN
content-type:
application/json;charset=utf-8
x-rate-limit-remaining:
177
last-modified:
Wed, 17 Sep 2014 16:07:17 GMT
status:
200 OK
date:
Wed, 17 Sep 2014 16:07:17 GMT
x-transaction:
491****a8cb3f7bd
pragma:
no-cache
cache-control:
no-cache, no-store, must-revalidate, pre-check=0, post-check=0
x-xss-protection:
1; mode=block
x-content-type-options:
nosniff
x-rate-limit-limit:
180
expires:
Tue, 31 Mar 1981 05:00:00 GMT
set-cookie:
lang=en
set-cookie:
guest_id=v1%3A14109******2451388; Domain=.twitter.com; Path=/; Expires=Fri, 16-Sep-2016 16:07:17 UTC
content-length:
59281
x-rate-limit-reset:
1410970526
server:
tfe_b
strict-transport-security:
max-age=631138519
x-access-level:
read-write-directmessages
So how do these HTTP request and response messages fit into PHP? Does PHP auto generate this? How do I add authorization to PHP requests etc? I'm confused about the deeper workings of PHP
When the client sends the HTTP request to the server, there has to be something to receive the HTTP request, which is called a web server. Examples of web servers are Apache, IIS, Nginx, etc. You can also write your own server, which can handle input however it wants. In this case, I'll assume that you are requesting a PHP file.
When the web server captures the HTTP request, it determines how it should be handled. If the file requested is tweets.json, it will go make sure that file exists, and then pass control over to PHP.
PHP then begins its execution, and performs any logic that the script needs to do, meaning it could go to the database, it reads, writes and makes decisions based cookies, it does math, etc.
When the PHP script is done, it will return a HTML page as well as a bunch of headers back to the web server that called it. From there, the web server turns the HTML page and headers back into a HTTP request to respond.
That is a pretty simple overview, and web servers can work in many different ways, but this is a simple example of how it could work in a introductory use-case. In more complex scenarios, people can write their own web servers, which perform more complex logic inside of the web server software, rather than passing it off to PHP.
When it comes down to it, PHP files are just scripts that the web server executes when they are called, they provide the HTTP request as input, and get a web page and headers as output.
I have a website with some images sent from php script.
Every time ETag is sent and checked with next request. That works fine. On first page open all files are downloaded with 200 Ok and with the next with 304 Not Modified.
But I noticed that some file sent directly from http server are event not checked for beeing modified if I re-open the page but are while reloading (F5).
If I open the page for the first time:
Files from web server: 200 Ok
Files from php script: 200 Ok
If I press F5:
Files from web server: 304 Not Modified
Files from php script: 304 Not Modified
If I reopen the page:
Files from web server: NO REQUEST
Files from php script: 304 Not Modified
What I want to do is to make browser skip checking whether my files where modified or not and display the cached version.
So I checked respones that http and php script are sending to browser:
Static content from http server:
Accept-Ranges bytes
Connection keep-alive
Content-Length 22033
Content-Type image/png
Date Sat, 15 Mar 2014 10:42:06 GMT
Etag "523c1617-5611"
Last-Modified Fri, 20 Sep 2013 09:32:07 GMT
Server nginx
Content served by php script:
Connection keep-alive
Content-Type image/jpeg
Date Sat, 15 Mar 2014 10:45:16 GMT
Etag c4ca4238a0b923820dcc509a6f75849b
Server nginx
Transfer-Encoding chunked
So the differences are:
Accept-Ranges, Content-Length, Last-Modified, Transfer-Encoding
But the only one which I THINK could make browser not check for update is Last-Modified. So if I add Last-Modified to my php script - would browser skip checking for update?
Ok, found an anwser.
Last-Modified: with firefox made image-loading something like random.
Cache-Control: max-age=... completly stopped checking whether image was modified
I am experiencing intermittent issues when using the Pingdom monitoring tool to check the status of my website.
Every 10-15 minutes I get an alert to say that a 302 has been found. What I can't understand is - i'm not doing any 302 temporary redirects. I am, however, doing 301 redirects (in certain circumstances).
Could this be a false positive from Pingdom?
Also, I have a redirect in code that does this. Would not specifying the HTTP response code
cause an issue here?
header('Location: http://www.ayrshireminis.com');
exit();
The Pingdom data:
Request 1
GET / HTTP/1.0
User-Agent: Pingdom.com_bot_version_1.4_(http://www.pingdom.com/)
Host: www.ayrshireminis.com
Received header
302 Found
Date: Tue, 24 Jul 2012 13:13:25 GMT
Server: Apache
Set-Cookie: prev_session_id=2a7001f5caa79bd36995953bf4853675; expires=Thu, 23-Aug-2012 13:13:25 GMT; path=/; domain=ayrshireminis.com
Location: http://www.ayrshireminis.com/
Vary: Accept-Encoding
Connection: close
Content-Type: text/html; charset=ISO-8859-1
Looks to me like a cookie is being set on the response, then redirecting you to the same page. Because Pingdom uses a number of different monitoring sources, that cookie redirect behavior will cause a lot of problems. Then again, you may need it for actual website visitors.
Rather than monitor the root of the webpage, I would recommend creating a separate /status page just for Pingdom that:
Doesn't set or use cookies
Performs a cheap end-to-end health check of the application and backing services
Returns a 200 response code only if everything checks out OK
I am trying to use curl to download a torrent file the url is
http://torcache.net/torrent/006DDC8C407ACCDAF810BCFF41E77299A373296A.torrent
You will notice that upon getting to the page the download of the file is blocked for a few seconds via javascript, I was wondering if there is anyway to bypass this while using curl and php?
Thanks
The file is not blocked via javascript, that's just an informal message if you request that file. The redirect then is done via javascript.
You can simulate the request your own, the important part here is that you add the HTTP Referrer request header. Example:
$ curl -I -H 'Referer: http://torcache.net/torrent/006DDC8C407ACCDAF810BCFF41E77299A373296A.torrent' http://torcache.net/torrent/006DDC8C407ACCDAF810BCFF41E77299A373296A.torrent
HTTP/1.1 200 OK
Server: nginx/1.3.0
Date: Sun, 10 Jun 2012 17:13:59 GMT
Content-Type: application/x-bittorrent
Content-Length: 10767
Last-Modified: Sat, 09 Jun 2012 22:17:03 GMT
Connection: keep-alive
Content-Encoding: gzip
Accept-Ranges: bytes
Referrer is one thing to check, mind the typo in the HTTP specs, see Wikipedia.
This is kind of a carry on from a question asked yesterday: Can't seem to get a web page's contents via cURL - user agent and HTTP headers both set?
I'm attempting to access a url's contents, the problem is the way this url handles request.
The url: http://www.deindeal.ch/deals/atlas-grand-hotel-2-naechte-30-2/
First request (without cookies):
After "learning" to use curl in the command line (props to #d3v3us), a simple request curl -i http://www.deindeal.ch/deals/atlas-grand-hotel-2-naechte-30-2/ shows the following:
curl -i http://www.deindeal.ch/deals/atlas-grand-hote
l-2-naechte-30-2/
HTTP/1.1 302 FOUND
Date: Fri, 30 Dec 2011 13:15:00 GMT
Server: Apache/2.2.16 (Debian)
Vary: Accept-Language,Cookie,Accept-Encoding
Content-Language: de
Set-Cookie: csrftoken=edc8c77fc74f5e788c53488afba4e50a; Domain=www.deindeal.ch;
Max-Age=31449600; Path=/
Set-Cookie: generic_cookie=1; Path=/
Set-Cookie: sessionid=740a8a2cb9fb51166dcf865e35b91888; expires=Fri, 27-Jan-2012
13:15:00 GMT; Max-Age=2419200; Path=/
Location: http://www.deindeal.ch/welcome/?deal_slug=atlas-grand-hotel-2-naechte-
30-2
Content-Length: 0
Connection: close
Content-Type: text/html; charset=utf-8
Second request (with cookies):
So, I save the cookie using -c, check that it saves as cookie.txt, and run the request again with the addition of -b cookie.txt, getting this:
curl -i -b cookie.txt http://www.deindeal.ch/deals/atlas-grand-hotel-2-naechte-3
0-2/
HTTP/1.1 302 FOUND
Date: Fri, 30 Dec 2011 13:38:17 GMT
Server: Apache/2.2.16 (Debian)
Vary: Accept-Language,Cookie,Accept-Encoding
Content-Language: de
Set-Cookie: csrftoken=49f5c804d399f8581253630631692f5f; Domain=www.deindeal.ch; Max-Age=31449600; P
ath=/
Location: http://www.deindeal.ch/welcome/?deal_slug=atlas-grand-hotel-2-naechte-30-2
Content-Length: 0
Connection: close
Content-Type: text/html; charset=utf-8
To me this looks like exactly the same contents, minus one or two parameters in the cookie, but maybe I'm overlooking something?
I'm attempting to get the curl request to function and return the same contents as when requesting that url via a browser, but I'm not sure what I should do next.
Note: I've tagged this PHP, as I am using PHP to make the requests, I've simply using command line to easily show the returned headers - so if there's any other PHP libraries or methods that would work (better, or in a place that cURL wouldn't), please feel free to suggest any.
Any help would be greatly appreciated ;).
You need this,
curl -iL -c cookie.txt -b cookie.txt http://www.deindeal.ch/deals/atlas-grand-hotel-2-naechte-3
-b flag is used to read cookie from . For a file to be used to save cookie after the http transaction use -c flag. Its called cookie jar.
Using WebGet (Sorry, Its written by me) pulling the contents is quite simple.
require "WebGet.php";
$w = new WebGet();
$w->cookieFile = 'cookie.txt'; // must be writable
$w->requestContent("https://github.com/shiplu/dxtool");
print_r($w->responseHeaders) // prints response headers
print_r($w->cachedContent) // prints url content
I may be misunderstanding your question, but a 302 response means content found, and you just need to follow the "Location" right? cUrl will only perform one request, unlike your browser which will see that 302 (set the cookies, just like you're doing) then follow that location header. It looks like your location has a "?" in it that isn't in the original. Run cUrl, with that same cookie jar, on the Location url.
http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#3xx_Redirection