Is it possible, to upload a file to a HTTP webserver in a firemonkey delphi application? If yes, how? I've searched a lot, but I haven't found anything useful. Firemonkey is not really popular yet, so there is not enough source about the topic.
Yes, for file uploads to a web server (HTTP) you can use the Indy TIdHTTP component.
Internet Direct (Indy) 10.6 supports all Delphi target platforms.
Uploading usually is done with a HTTP POST request. There are many example for POST with TIdHTTP, and examples how to configure TIdHTTP for standard HTTP and HTTPS (TLS) servers on Stack Overflow.
Related
I've got a custom HTTP Server created using Delphi 7 and Ararat Synapse which receives HTTP GET from another application with a simple set of variables.
For example: http://myserver.com/get?Variable1=adsds&Variable2=asdasdasdsa&Variable3=aasdsadasdsad
The application source is similar to this - http://searchco.de/codesearch/view/13374072
Now, my customer needs me provide a SOAP interface. Completely new to SOAP, I did some research and found it to be very complicated. I would like to know what's the easier way to incorporate this interface to my HTTP server. Or should I find ready made SOAP To HTTP Conversion app if there is such a software. Thank you.
Note: I'm not the original developer of the HTTP Server.
There is a Web Service Toolkit for Free Pascal and Delphi which can be used to write SOAP servers.
I have not yet used it myself but it is in active development and might be compatible with Synapse.
Update: the current version seems to include support for Internet Direct (Indy) and Synapse (HTTP server and TCP server).
You need to write a SOAP server, which not only generates SOAP responses from SOAP requests, but which also provides a WSDL document telling the users what requests they can make.
Since your completely new to SOAP here are some 'starter' links:
General:
SOAP, WDSL, HTTP, XSD? What the?
List of publicly available web services (I would start writring a small testapp that consumes SOAP)
With Delphi:
Developing Web Services with Delphi
Web Services Made Easy With Delphi
Web services with Delphi
The fact that you are using Delphi 7 makes things more difficult, since later versions have better support:
Debugging/Testing Win32 SOAP Web Services (D2007). Bob has more SOAP articles
For testing both serving and consuming SOAP you should use SoapUI, a great free tool (What is SOAPUI?).
Once you are up to the WDSL you should know what types of WSDL exist and the whole namespaces mess...
Could you give me a tip on how can implement a rest webserver using just webbroker?
I know newer versions of delphi has this REST/JSON/DATASNAP features, but i´m stuck with BDS2006.
Basically i need to interact with other application and the guys are asking me to make this webserver application and provide just five methods over the internet/vpn. Don´t need to be running inside IIS or Apache.
I´ve googled a lot but the answers always point to 2010 and up versions. All that readings lead me to use the webappdebug template make some actions and respond to GET/POST/PUT/DELETE with some JSON objects.
The problem is ... I´m not well versed with webbroker, how can i achive this?
THANKS IN ADVANCE, ANY HELP WILL BE WELLCOME.
Our full RESTful Client-Server framework is availble, including an ORM (and much more), named mORMot.
It is an Open Source project, running from Delphi 6 up to XE2 - so it will work with Delphi 2006 (I've tested it with Delphi 7 and 2007 so I do not see any reason why BDS 2006 would fail).
It is able to serve Objects and Services (just like DataSnap) using JSON, in a secured (using per URL authentication) RESTful protocol.
It is able to use any Database engine back-end, with a SQLite3 kernel. You can even use without any database layer at all (that is without SQLite3), if you need only the RESTful services and in-memory objects feature (you can persist the objects with JSON or in binary format, but you won't be able to use advanced features like cross-table search).
More than 700 pages of documentation available.
For HTTP/1.1 communication, it is not based on WebBroker (nor IIS, nor Apache), but it will use directly the high-speed http.sys kernel-mode service.
Long ago I started some "web applications" using Delphi 2007 and WebBroker (TWebModule). At the time I assumed you needed a webserver such as Apache or Microsoft IIS in order to create any sort of website. Additionally I don't use most of the Apache features (except for Virtual Server so I can have multiple domains on a single ip address and SSL). So to me Apache is just an extra layer and makes makes debugging difficult.
Now enter Indy (TIdHTTPServer). If I understand correctly, Indy IS a webserver. So by using Indy I am no longer bound to use Apache or some other webserver. Is this correct?
Will I have any issues supporting the Virtual Servers in an Indy environment? And what about SSL. I have searched the literature and from what I can see it fully supports SSL certificates.
I am now in the process of porting some of my application from WebBroker to Indy. This mostly entails replacing within my code references of Request: TWebRequest with ARequestInfo: TIdHTTPRequestInfo and references to Response: TWebResponse with AResponseInfo: TIdHTTPResponseInfo.
Is there anyway to use the TWebModule architecture within Indy so that I don't need to do all of this rewriting?
Lastly is there anything else I need to be concerned with? My goal is to take Apache out of the loop.
Yes, you can use Indy's TidHTTPServer as a webserver, but it's much lower-level than IIS or Apache. There is no concept of virtual servers - this you would have to implement yourself.
Indy does support SSL as well via the OpenSSL dll's.
I imagine the biggest concerns you will have will be security related...there are millions and millions of sites running Apache or IIS and there are a ton of people devoted to finding flaws in those platforms, with a bunch of people fixing some of those flaws as they come up. Not so with Indy... there's one or two guys that respond on newsgroups to bugs that you discover. (One guy in particular, who will probably respond to your question here as well.)
Now, I use Indy HTTP server (along with SecureBlackBox SSL support) and I find it to be great for my purposes.
Indy HTTP server calls the WinSock API, and is able to implement:
A full HTTP/1.1 server;
A full HTTPS server (using either OpenSSL libraries or other third parties, like SecureBlackBox).
AFAIK you can use Indy to publish web modules.
See http://www.2p.cz/files/2p.cz/downloads/howto/indy_soap_web_services_in_delphi.pdf
You can also use other servers, for instance directly the kernel-mode http.sys server, which is used by ISS and .Net WCF for instance, and known to be very stable and efficient (it bypasses the WinSock APIs). Of course, it will serve HTTPS conent, if needed. It is available in standard since Windows XP SP2, and therefore in Vista and Seven. Using this component will let Microsoft will do all the debugging work for you, and it will be updated with the host OS. I use it for instance in our Client-Server ORM, or directly to replace a deprecated DCOM connection, with very good speed and stability on customer side.
Regarding virtual servers - the HTTP 1.1 spec requires clients to send a Host request header so virtual servers know which domain is being used specifically to handle the case when multiple domains have the same IP. TIdHTTPRequestInfo has a Host property for that value. In fact, TIdHTTPServer internally validates to makes sure that an HTTP 1.1 request has the Host header before firing any of its OnCommand... events.
We recently started using a Squid HTTP proxy server which provides squid-2.5-ntlmssp authentification.
Does somebody know if NTLMSSP is supported by one of the popular HTTP client libraries for Delphi (Indy, Synapse, ICS, nsoftware ...)?
Update: I just read in Wikipedia that
The Windows Service offering the acceptor side of NTLMSSP has been
removed from Windows Vista and Windows Server 2008 in favor of the
newer Kerberos authentication protocol.
So I guess that this auth method will be replaced by Kerberos soon - anyway I'll leave this question - for 'historic studies', or companies which always are a little behind current rocket-science etc. ;)
Related question: How can I get a Kerberos ticket with Delphi?
It seems Wininet should support it when enabled in the registry.
Indy includes a unit named IdAuthenticationNTLM.pas so it probably supports it, too.
Is it possible to convert Delphi SoapServer application to use TCP/IP?
From your comment to your question it sounds like you are looking to get rid of SOAP, and use something else to communicatie over a TCP/IP connection.
The question one could ask is why do you want to convert to non-SOAP comm over TCP/IP?
But the answer to whether it is possible is: of course this is possible, there are many application servers using TCP/IP for communication without using SOAP as their communication's protocol.
You will need some kind of protocol for communication between server and clients. You could roll your own, but doing what SOAP is doing for you now: receiving and responding to commands from clients (or method invocation) and marshalling data/objects between server and clients is not a trivial task.
So I'd suggest you have a look at other remoting libraries for client/server communication, such as:
Remobjects: http://www.remobjects.com/
kbmMW: http://components4developers.com/
As others have said, SOAP is just XML on http/https, and usually does already use TCP.
That said, you could simply treat it as raw socket data or http data. i.e. you could make a client that just uses http POST to send a string to the server. The string would contain an XML SOAP request, and would be treated by the server as if it were SOAP. Likewise, you could build the server in a non-SOAP fashion, just accepting XML and returning XML, and the client wouldn't know the difference.
You can use Fiddler2 to play with this. You can build requests and send them via HTTP Post. The server has no idea that you're not a SOAP client.
Chris
If you're talking about pre-Delphi
2009 DataSnap, meaning COM based
DataSnap, then you have to use a third
layer utility to do the communication.
That utility named sockets.exe is
included with Delphi, and is in the
same dir as Delphi (Program
Files\\\\bin
If it is Delphi 2009 or better, then
DataSnap has built-in TCP/IP
functionality. You use
TDSTCPServerTransporter component.
Update: Ups! for some reason I did read DataSnap SoapServer (wich neither exists, but I did think of Soap Connection).
A Soap Server Application needs the "server" part, meaning a web server. SOAP is an technologie that runs over HTTP protocol, so I don't think it could be "converted".
DataSnap could do the job, or Indy TIdTCPServer or some of the derived classes.