How to send a Protonmail with c++? [closed] - c++

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my question is how to send a protonmail with c++ code? I know that c++ is a bad language for that, but I need it done with c++. I don't know which port or even which library to use, there is way to low support and documentation for that.

C++ is not a bad language, if you want to send emails via C++ I suggest you find an SMTP library, here's one:
https://github.com/embeddedmz/mailclient-cpp
There are many email protocols that services use for receiving and sending mails, SMTP is the most common one for outgoing emails, for any programming language it's not hard finding a library for such protocols.

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How to interact with a smart card in C/C++? [closed]

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Is there any open framework written in C/C++ which helps in interacting with smart card devices, here my aim is to create such a system which is platform independent by in C/C++.
I have been trying to search such Libraries but all i came across is Java based frameworks like OCF and Java Smart Card I/O API.
Any help is appreciated.
Indeed there are methods like SCardEstablishContext, SCardConnect, SCardTransmit, which you use to establish communication with the smart card, and then send commands to the card, on the APDU level.
See also here

How to canonicalize XML in C++ [closed]

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I have an in-app purchase support in my Windows Phone app, and want to add a server-side receipt verification. However, I want to canonicalize the receiptXml before sending it to server, so I am looking for a ready-to-use approach for XML canonicalization on Windows Phone.
Good libraries for C++ XML parsing are RapidXML, TinyXML, pugixml or maybe (depending on work env) Xerces-C++

Open protobuf service [closed]

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Do you know of a robust, free, ideally open source, web service that uses protobuf.
I maintain an Android library for networking and I write samples for every module. For instance, the JSON modules use Github apis to get some data from the network and illustrate the client library usage.
Do you know an equivalent for protobuf ?
Thanks in advance.
Your protobuf module could use this api to access from the android market place:
https://code.google.com/p/android-market-api/

Native C++ HTTPS REST call with certificate validation [closed]

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What library is the best to use for the purpose? Target platform is Linux.
Difficult to tell the best, but i used Qt (QNetworkAccessManager) and a Qt JSON Parser with success.
I picked up libcurl thus it is enforced with SSL certificate validation. Regarding to REST, I am able to send GET and POST requests also. However it is C but not C++ library. But it does not make a big difference for me because the syntax is pretty clear and there are lot of examples.

Is there a C++ CalDav protocol library to connect to iCloud//Yahoo [closed]

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I have started working on C++ Windows application which needs to fetch Icloud and Yahoo Calendars by connecting to the CalDav servers.
Is there a C++ library that implements this protocol?
Is there a C++ library that implements this protocol?
There's always a number of good opensource libs that implement standardised protocols like CalDav.
They are best hunted on FOSS project hosts (with the help of Google).
Here is afew:-
http://libcaldav.sourceforge.net/
http://trac.mulberrymail.com/repos/wiki/icalendar
https://code.google.com/p/kcaldav/ <- unmaintained but may be usefull
http://www.zarafa.com/ <- you might want to extract the CalDav only code from this
https://code.google.com/p/openconnector/ <- same as above