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wininet winhttp

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Learn more. Questions tagged [wininet]. Ask Question. Learn more… Top users Synonyms. Filter by. Sorted by. Tagged with. Apply filter. HttpSendRequestA is false and return 0 Hi i am trying to download something using WinInet with a costum user agent the issue is that i fails at HttpSendRequestA the error it return is 0 i dont know what this error means i have tried However a Windows 7 user is reporting problems if though TLS options are checked I had the user try open the website Tom 3, 8 8 gold badges 58 58 silver badges bronze badges.

My issue is that on seemingly random machines, when the user navigates to a directory which they are able to do and attempts to ls i.

Will Webster 15 6 6 bronze badges. Using WinInet. In older projects, this wasn't the case. Delphi XE8, form graphics problem when called messagedlg of windows My O. DLL, the graphics of the application grainy,blurry uglyCannot get files from ftp using vba I want to download an image from ftp to use it later in a access report, the problem is the ftpgetFile returning 0 and not downloading the image in the folder.

Public Function How do I import and use a dll into R I am trying to access the methods of wininet. I am able to load the library with dyn. Col Bates - collynomial 12 12 bronze badges. How to convert it? I search a long time and I don't find the solution. I have the same problem with I tested my PHP code with a Postman request and it works.

Before Delphi Is there a way in Jmeter where The file is protected with a username and password, but it downloads an HTML file with a gpj extension. When calling wininet functions random NullReferenceException occur Not sure why but at random when calling the function InternetQueryDataAvailable a null ref exception occurs for no apparent reason sins non of the arguments which it accepts can be null: [DllImportThere are multiple benefits.

One of them is caching of the results. This is less important then it used to be. You also control what sites can be visited and that you have a log of where the traffic is going to.

You can use a transparent proxy which means that you do not need to configure your hosts with proxy settings. With a standard proxy you need to tell the hosts and applications where to go and, optionally for what sites to bypass the proxy server.

There are different options and libraries to configure the Windows proxy settings. Primarily because I wanted to automate this. Bar the options to automatically detect the proxy setting or using a script GPO or registry editing you can manually configure the settings for WinINET.

But bar using GPOs setting Proxy setting manually can be tedious, especially when you want to clean out old settings and have multiple profiles on the hosts. So I threw together a PowerShell solution to use in work group environments.

This took some research and testing to get right. I hope this help somebody and probably my future self as well. Thank you so much for this. This site uses Akismet to reduce spam.

Learn how your comment data is processed. Buy me a coffee. How to configure proxy server settings There are basically 3 ways to define proxy settings on a Windows host. You set these per user or per machine. In the latter case only a user with administrative rights can set or change the proxy server settings. WinHTTP is the best choice for non-interactive usage.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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My request is used for calling JSON. I already authenticated before calling this. So here is my working WinInet code:. With that latter call I always receive a but I should get a like I do with the first method. So I suspect something with the cookie header is wrong. Do anyone see what I'm doing wrong? Or what is the difference between the two methods?

WinHTTP vs. WinINet

Looks about right. That might point you to what you need to do. Ok, I found it. Wasn't obvious from the code I posted The string cstrMethod contains a user id that I extracted previously from the response header from an authentication call. This id is then used for constructing the method call.

So I had to trim the user id string from the header before I could use it for further calls. Learn more. Asked 10 years, 1 month ago. Active 6 years, 5 months ago. Viewed 3k times.

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Simon Linder Simon Linder 3, 3 3 gold badges 25 25 silver badges 45 45 bronze badges. Active Oldest Votes.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Strangely I had this working before but I reinstalled my system, upgraded to w7 and now I can't seem to get this code to compile.

The problem is that I'm using winhttp. Ah got it, finally by moving the winhttp include into the cpp files and putting wininet into the ftp client header. Learn more. Asked 10 years, 5 months ago. Active 10 years, 5 months ago. Viewed 3k times. Currently I have in my stdafx. Active Oldest Votes. Most likely a clash between winhttp. Serge Wautier Serge Wautier Sign up or log in Sign up using Google.

About WinHTTP

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This means that individual even non-admin users can set their own proxy settings without impacting the proxy settings of other user-accounts.

Subsequently, changes to the proxy settings can only be made by elevated applications running with Administrative permissions. On the connections tab, select a Connection and click the Settings button.

wininet winhttp

For most users, the proxy is configured by pressing the LAN Settings button at the bottom of the dialog:. Otherwise, the proxy setting specified in LAN settings is used. Settings Precedence: Part 2: The settings in this dialog box are presented in the order of their precedence. First, the Automatically detect settings option is consulted, next the automatic configuration script option is evaluated. If neither of those options is enabled or neither specifies a proxy to use, only then are the fixed proxy server settings consulted.

This process consists of two phases:. These operations may or may not be performed in parallel, depending on the network stack. Some browsers e. The user may also directly specify the URL of a proxy configuration script using the second checkbox in the dialog. The URL field below points directly at the target script e. This function is called by the browser each time that it needs to decide where to send a given request.

It returns a string which is either:. Warning: One sometimes surprising aspect of proxy scripts is that they impact the Internet Explorer Security Zone determination. Note: In Novemberthe. As a temporary workaround, this block can be removed by setting the following registry key:. Many applications cannot handle showing prompts as a part of this workflow and will fail silently. To promote interoperability, IE11 also blocks the use of Proxy Configuration scripts that require authentication.

wininet winhttp

By default, the simple UI is shown:. The Exceptions box allows you to specify what hostnames are configured to bypass the proxy. Beyond hostnames, it supports two special tokens:.

Porting WinINet Applications to WinHTTP

Unfortunately, as a part of this update, a regression was inadvertently introduced. No fix for this issue also present in IE11 is yet available. This would open a DLLHost that can be used to adjust the proxy settings during shutdown.

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wininet winhttp

Exit focus mode. Applications built on the. NET Framework typically will adopt the system proxy only when they start and do not detect changes at runtime. Also, the proxy settings can be overridden by the app. Automatic Configuration Script The user may also directly specify the URL of a proxy configuration script using the second checkbox in the dialog.

WinINET defaults to automatically bypassing the proxy for loopback addresses; this token disables that behavior. NET Framework simply ignores it.To content To menu To search. If you want to implement an HTTP client access in your application, you may consider several choices:.

For our ORM, we tried to avoid external dependencies, and did not have the need of all Indy's features and overhead. We fist wrote our own WinSock wrapper, then tried out WinInet.

When used on our testing benchmark, we found out that WinINet was dead slow. As fast as direct WinSock access, without the need of writing all the wrapper code. WinINet displays a user interface for some operations such as collecting user credentials. WinHTTP, however, handles these operations programmatically.

However, single-user applications that require FTP protocol functionality, cookie persistence, caching, automatic credential dialog handling, Internet Explorer compatibility, or downlevel platform support should consider using WinINet. Each class has its own architecture, and attaches itself to a Windows communication library, all based on WinSock API. It has been reported on our forum, and root cause was not identified yet.

This is the recommended usage from a Delphi client application. See our source code repository. Feedback are welcome on our forum. Home - Archives. RSS Entries feed.In general, WinHTTP specifies the proxy and proxy bypass servers on a per-session basis when the session is created. These settings can be overridden on a per-request basis. The following sections describe how to specify the proxy settings for a session and a request:.

The application must be running as a user account to obtain these settings. Registry settings for an individual user can be loaded into the registry by calling the LoadUserProfile function. After the registry settings for an individual user have been loaded, the application follows the steps outlined under The application is running on a user account to set the proxy name and proxy bypass servers.

Then WinHttpSetOption is called to set the proxy for the request by specifying the request handle in the hInternet parameter. The proxy configuration is the same for the entire session, and per-request changes are not needed. Skip to main content. Exit focus mode.

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