If you have Win32 http API installed on your computer, we hope this article can help you solve the problem.
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These headers are controlled by the camera and are available to client applications through the HttpQueryInfo function. An application can use the same HTTP request descriptor across different HttpSendRequest calls, but the application reads any data returned before the call before calling the function again.
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The following list shows the standard sequence operations using the HTTP Server API:
- Initialize the API of the HTTP server created with the HttpInitialize function.
- Create a list using the HttpCreateHttpHandle .One
- Save and / or multiple URLs using the HttpAddUrl function.
- Always receive requests directed to URLs registered with the HttpReceiveHttpRequest function, and send HTTP responses to these requests using the httpsendhttpresponse function.
- (Optional) When submitting the response, transfer the additional object body using its HttpSendResponseEntityBody function.
- Perform cleanup operations by purchasing HttpRemoveUrl , CloseHandle and HttpTerminate .
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When using URLs, note that these are typically rendered URLs that are contained in the CookedUrl component of the HTTP_REQUEST_V1 structure and should often be used for unique tracking purposes. and for statistical purposes.
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Each application creates its own queue request. HttpCreateHttpHandle tells the application if this is a handle to the request queue. He moves this deskI typed into the HttpAddUrl function, which adds the target URL to the query string. The application receives notification of the return request internally and receives it from the request queue through the caller HttpReceiveHttpRequest , which contains a handle to the request queue. You can enable this feature to receive either request headers or entity headers and body. HttpReceiveHttpRequest also returns the RequestId for the received request, which is clearly unique for the request handle.
Typically the HttpReceiveRequestEntityBody function is used to return the request processing queue to retrieve subsequent body parts of the request block as needed.
Use the HttpReceiveClientCertificate function with applications that serve URLs using the correct security scheme (“https”) to retrieve client certificate information as needed.
Replies are sent using the HttpSendHttpResponse function. This function uses the RequestId of the corresponding request to respond to the transmission. The answer can be sent to severalThe number of API calls over time by calling the HttpSendResponseEntityBody function with the RequestId of the originally received request.
Typically, the HTTP server hides the details of the API from connection management, and its configuration and removal due to applications. However, the application can additionally determine that the connection has been lost by calling HttpWaitForDisconnect .
- If the application is not listening or responding to a URL, the URL is removed using the HttpRemoveURL function.
- If the last application is using a request queue, close the corresponding request queue handle using the CloseHandle function.
- When the application has finished using the HTTP Server API, call the HttpTerminate function.
The application is now required to validate practically relevant request headers, including content negotiation headers, as part of their use, and accordingly reject requests based on the content of the header. The HTTP Server API simply ensures that virtually every header is properly terminated and does not really contain invalid characters.
The HTTP Server API decodes messages in chunks on the receiving side, but does not bulk-encode the messages on the sending side. If separation is absolutely necessary on the send side, the application must implement it. For more information on encoding, see RFC 2616 .
By default, HttpSendHttpResponse contains “Microsoft-HTTPAPI / 1.0” as the “Server:” header. When an application specifies a server header by simply responding, this value is usually placed as the first part of the server header along with a space a, as well as “Microsoft-HTTPAPI / 1.0”.
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Win32 is a 32-bit application interface (API) for Windows 95 and later. The API consists of properties that, like Win16, are implemented in system DLLs. The underlying Win32 DLLs eventually become kernel32. dll, user32.
Many legacy Windows applications in nature still use Win32 in one form or another. Decades later, Microsoft has implemented it internally to develop Office 365, Skype, and other applications. That was 16 years ago. However, Win32 is still the predominant legacy API for learning and retraining.
The HTTP Server API decodes section comments on the receiving side, but never performs section-wise encoding on the sending side. If splitting on the link side is required, the application must implement it.
