I am getting a url from server with lot of data as query string
(E.g. http://www.test.com/?n=1,2,3,4,5,6,7,8.....100000) and I want to open it using window.open().
But the moment I pass the URL to window.open the url which gets gets truncated. After searching for sometime I could figure out that the maximum limit for URL is 2,083 characters(IE) so it passes PART of query string and truncates the rest..
How can I overcome this?
Please let me know if I need to provide more details.
I think the only solution is to use POST instead of GET. Just use a form, instead of window.open. Please see this older answer:
https://stackoverflow.com/a/17089124/907420
You could try URL shorteners, like goo.gl or bit.ly:
https://goo.gl/
Speaking of programming, you could try to shorten your URL-s yourself, for the given example:
Exact URL for your example, shorter by ~2000 characters.
Where x..y is translated on server side as range(x, y) -> 1,2,3,4,5...100000 for x and y being 1 and 100000
If you want to stick with GET (and I would recommend that you use POST) you can try to compress the parameters. Instead of giving a huge number of parameters you create a javascript object holding the parameters, jsonfy it and you end up with a string that can be compressed and uncompressed again at the other end. Afterwards you can deserialize the JSON string and you have your parameters. Depending on the number of parameters it might still not be sufficient for a GET request.
But at the end a POST request is the best solution I think.
Related
I am encoding the query string in an Ajax call in Javascript using encodeURL() but I can't find a way to then decode it on the serverin c#.
I use HttpContext.Current.Request["ID"] to get the parameter values from the query string and in the debugger I can see that Request.QueryString is fully encoded but when I try to get the value of a particular parameter it wont Decode.
I have tried using HttpUtility.UrlDecode(HttpContext.Current.Request["ID"]) but it doesn't appear to decode it. What am I missing?
Or should I be using a completely different way too get the query values?
Ah sorry!!! - sometimes you just need someone else to ask you a question and then you see the answer yourself - on the client I was using encodeURI instead of encodeURIComponent.
I'm having some trouble receiving information through $_GET[' '].
I send a request to a PHP document, like this
procura_plano.php?plano='+plano+'&operadora='+operadora+'&contrato='+contrato+'&idade='+idade+'&acomo='+acomodacao+'&valor='+valor
because I'm using javascript to make the request. But the last value seems not to be set. Is there a limit of parameters that I can pass through the link?
Sorry for my english :/
Please note that PHP setups with the suhosin patch installed will have
a default limit of 512 characters for get parameters. Although bad
practice, most browsers (including IE) supports URLs up to around 2000
characters, while Apache has a default of 8000.
To add support for long parameters with suhosin, add
suhosin.get.max_value_length = <limit> in php.ini
For More info check this link or URL parameters- Stack Overflow
What w3 Schools say is: Yes, when sending data, the GET method adds
the data to the URL; and the length of a URL is limited (maximum URL
length is 2048 characters)
Check this, GET URL Parameters- w3 Schools
I'm writing a JavaScript function that needs to uphold three properties:
be very small and lightweight - no external libraries
encode a string in such a way as to be able to be passed as a GET parameter
this string must be decoded again at its destination
Effectively, it authenticates the user by sending his username and password to a PHP page which then verifies it. This is done via GET because I haven't yet found a way of doing a background cross-domain POST request. The trouble is that if the user has a character such as '#' or similar in his password, it doesn't get sent properly.
Currently to avoid this, I encode() the password string before sending it, which allows it to be received without problems. However, I read that PHP's urldecode() is not a perfect analog for this, as there are corner cases which are treated differently (i.e. ' ', '+', etc). Sadly I cannot find this document anymore, so I cannot quote it, but the gist was that one of them converts spaces into '+' signs, which the other treats as an actual plus sign, or something like that...
As such, I'm looking for a Javascript function that can take a string and make it URL-safe, and which has a perfect reversal function in PHP so that the original string can be recovered.
The arguably awful code I currently use to achieve this:
login.onsubmit = function(){
loginFailMsg.style.display = 'none';
var inputs = login.getElementsByTagName('input');
var formdata =
'username='+inputs[0].value+'&password='+encode(inputs[1].value);
submit.src = formtarget+'/auth/bklt?'+formdata;
userinfo = undefined;
setTimeout(getUserinfo,300);
return false;
};
encodeURIComponent, PHP will decode it automatically when populating $_POST or $_GET
'&password='+encode(inputs[1].value)
Where's encode function coming from? Seems to me the quick answer to your question is using encodeURIComponent() instead, available since JavaScript 1.5. See also Comparing escape(), encodeURI(), and encodeURIComponent(); it does not encode everything either, but does encode all the server expects it to.
(As for cross-domain AJAX POST calls, I'd really have a look at "JSON with Padding". See JSONP with jQuery that I mentioned in the comments earlier. This will also prevent issues with the timeout you've randomly chosen, and jQuery will also help you, a lot, to get rid of inputs[0].value and the like. And, as you apparently already have a MD5 hash on the server, I'd really hash the password client side as well --see Karl's answer-- and compare those hashes instead. Respect your user's password and your own time, drop that no external libraries requirement!)
I don't think there's such a thing as a reversible hash function. There are plenty of javascript md5 libraries available, however.
I need to pass html code with QueryString because im using ajax method to send post(i mean comment not the type of method) on my web site. When I write a post like that.
"Hi everybody<br />Whats'up."
its just taking "Hi everybody" removing rest of the content.
Info : Im using GET Method
Don't use escape, it's a deprecated function. Use encodeURIComponent instead:
encodeURIComponent("Hi everybody<br />Whats'up.");
Also, don't forget about Internet Explorer's 2,083 character limit in the address bar, you should use POST instead of GET if you want to avoid it.
What method are you using - GET or POST? You should be using POST. That will allow you to send full html and you don't need to use the querystring.
http://www.mywebsite.com/index.html?html_code=Hi%20everybodyWhats'up.
Using &url='+encodeURIComponent(url); to pass a URL from browser to server will encode the url but when it is decoded at the server, the parameters of url are interpreted as seperate parameters and not as part of the single url parameter.
What is the recommended way to pass urls as url parameters ?
encodeURIComponent() should work. For example,
'&url=' + encodeURIComponent("http://a.com/?q=query&n=10")
produces
"&url=http%3A%2F%2Fa.com%2F%3Fq%3Dquery%26n%3D10"
(which doesn't have any & or ? in the value).
When your server gets this url, it should be able to decode that to get the original:
param["url"] = "http://a.com/?q=query&n=10"
I'm not sure what server you're using (e.g. Rails, Django, ...) but that should work "out of the box" on any normal system.
Using '&url='+encodeURIComponent(url); to pass a URL from browser to server will encode the url
Yes, that's what you should be doing. encodeURIComponent is the correct way to encode a text value for putting in part of a query string.
but when it is decoded at the server, the parameters of url are interpreted as seperate parameters and not as part of the single url parameter.
Then the server is very broken indeed. If that's really what's happening, you need to fix it at the server end.
Code?
I ran into this issue, personally I couldn't use any of the accepted answers, but it can also be done by just encoding the url into Base 64, passing it as a parameter, and then decoding it. With javascript, you can encode a string s to base 64 with btoa(s) and decode with atob(s).
Other languages have ways of doing the same thing.
Base 64 is just kinda like representing a larger series of characters with 64 character(For ex, all the capital letters, all the lowercase, and a couple symbols). Kinda like how we represent letters in Binary. But it's nice to use, because then we can just pass base64 strings as parameters, and then they won't interfere/get interpreted in a weird fashion, and then we can decode them at the next stage.
Use escape() to url encode it, it will encode the ampersands so that does not happen.
Honestly, go with Google URL Shortener. Then you can just use the URL code in the url query string: http://example.com/url/A7dh3
In your application, take that and prepend the Google URL Shortener domain name, and do the redirect. This adds tracking to the URL through Google Analytics also. Lots of advantages in this approach. Just a short code and added tracking data, too.