Can I make the matlab http send function to use "%40" in the destination url?

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Assen Koev
Assen Koev 2024-11-11，20:24
回答： Sreeram 2024-11-18，5:43
I need to send a PUT or POST request to a url containing '%40' (encoded "@" symbol) in the destination url. I need to use the matlab.net.http send function in order to get information from the response headers.
I am not an expert on http. My problem is that regardless how I try to structure the message and send function, the sent request either includes the unencoded "@" symbol or the double-encoded '%2540', both of which trigger errors from the server.
Is there a way to force the send function to use '%40' in the destination address?
I am providing a dummy example below to show the issue because the real url (from Adobe API) is extremely long and contains API keys.
Grateful for any help on this.
import matlab.net.*
import matlab.net.http.*
% URL- NOTICE THE REQUIRED ENCODED %40 which is encoded symbol "@"
exampleURL = 'https://www.example.com/abcd%40efgh.com/ijkl?queryString=queryValue';
exampleURL_components = URI(exampleURL,'literal');
% Construct a dummy request message. This does not depend on the url.
exampleRequest = RequestMessage('PUT',[], "Irrelevant");
% Send the dummy request to original URL - The symbol "@" is DOUBLE ENCODED - causes error
[~,sentrequest,~] = send(exampleRequest,exampleURL);
disp('Sent request contains double-encoding from @ to %2540');
disp(sentrequest.RequestLine.RequestTarget);
% Send the dummy request to URI - The symbol "@" is UNENCODED - causes error
[~,sentrequest2,~] = send(exampleRequest,exampleURL_components);
disp('Sent request contains unencoded @');
disp(sentrequest2.RequestLine.RequestTarget);
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Assen Koev
Assen Koev 2024-11-11，21:46
编辑：Assen Koev 2024-11-11，21:46
A note:
It appears to me the behavior I described above comes from the internal URI function which uses
path = urlencode(obj.Path, obj.Pchar) %line 499
where the Pchar are characters that are allowed to pass unencoded and include "@". So this causes '%40' to be double encoded and '@' to be left unencoded, i.e. not allowing for '%40' to be included in the sent message. Of course, I still don't know how to get around the noted behavior.

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回答（1 个）

Sreeram
Sreeram 2024-11-18，5:43
Hi @Assen Koev,
MATLAB’s HTTP interface does not provide an option to disable encoding or force the “send” function to use a URL. The “send” function ensures that the URL is valid according to the encoding rules.
According to RFC 3986, the path of a URI may consist of characters in ‘segment-nz-nc’ and this set lists the ‘@’ character explicitly:
segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
So, the HTTP URI displayed in the last line of the code you shared is valid. You might want to consider double checking why this causes the error.
Thanks

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