HTTPSend (Function)

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Security error in a secure transaction

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HTTPSend (Function)

In french: HTTPEnvoie

Sends an HTTP request and waits for the response from the HTTP server.

Versions 22 and later

This function is now available in browser code.

New in version 22

This function is now available in browser code.

Example

cMyRequest is httpRequest
cMyRequest..URL = "http://www.windev.com"
cMyResponse is httpResponse = HTTPSend(cMyRequest)
IF ErrorOccurred THEN
Error(ErrorInfo(errFullDetails))
ELSE
Info(cMyResponse..Content)
END

Syntax

Syntax that is using an httpRequest variable Hide the details

<HTTP response> = HTTPSend(<HTTP request>)

<HTTP response>: httpResponse variable

Name of the httpResponse variable containing the response received from the HTTP server.

<HTTP request>: httpRequest variable

Name of httpRequest variable containing the characteristics of the HTTP request that will be sent to the server.

Simplified syntax for sending a request Hide the details

<HTTP response> = HTTPSend(<URL>)

<HTTP response>: httpResponse variable

Name of httpResponse variable containing the response received from the HTTP server.

<URL>: Character string (with quotes)

URL to interrogate.

Versions 22 and later

Asynchronous syntax that is using an httpRequest variable Hide the details

HTTPSend(<HTTP request> , <WLanguage procedure>)

<HTTP request>: httpRequest variable

Name of httpRequest variable containing the characteristics of the HTTP request that will be sent to the server.

<WLanguage procedure>: Character string

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

New in version 22

Asynchronous syntax that is using an httpRequest variable Hide the details

HTTPSend(<HTTP request> , <WLanguage procedure>)

<HTTP request>: httpRequest variable

Name of httpRequest variable containing the characteristics of the HTTP request that will be sent to the server.

<WLanguage procedure>: Character string

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

Asynchronous syntax that is using an httpRequest variable Hide the details

HTTPSend(<HTTP request> , <WLanguage procedure>)

<HTTP request>: httpRequest variable

Name of httpRequest variable containing the characteristics of the HTTP request that will be sent to the server.

<WLanguage procedure>: Character string

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

Versions 22 and later

Simplified asynchronous syntax for sending a request Hide the details

HTTPSend(<URL> , <WLanguage procedure>)

<URL>: Character string (with quotes)

URL to interrogate.

<WLanguage procedure>: Procedure name

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

New in version 22

Simplified asynchronous syntax for sending a request Hide the details

HTTPSend(<URL> , <WLanguage procedure>)

<URL>: Character string (with quotes)

URL to interrogate.

<WLanguage procedure>: Procedure name

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

Simplified asynchronous syntax for sending a request Hide the details

HTTPSend(<URL> , <WLanguage procedure>)

<URL>: Character string (with quotes)

URL to interrogate.

<WLanguage procedure>: Procedure name

Name of WLanguage procedure called during the response from the HTTP server. This procedure has the following format:

PROCEDURE <Procedure name>(<Response> is httpResponse)

where <Response> is an httpResponse variable containing the response received from the HTTP server.

Remarks

Notes

To find out the runtime errors of this function, use ErrorOccurred and ErrorInfo.
If the management of cookies is implemented for the specified request (HTTPCookieManage), the cookies are updated in the httpRequest variable after the call to HTTPSend. Therefore, during the next call to HTTPSend with this request, the cookies will be taken into account.
Versions 21 and later
From version 21, the redirections are automatically taken into account in the HTTP requests. To manually process the redirections in the HTTP requests, you must use ..IgnoreError of httpRequest variable associated with the httpIgnoreRedirection constant.
New in version 21
From version 21, the redirections are automatically taken into account in the HTTP requests. To manually process the redirections in the HTTP requests, you must use ..IgnoreError of httpRequest variable associated with the httpIgnoreRedirection constant.
From version 21, the redirections are automatically taken into account in the HTTP requests. To manually process the redirections in the HTTP requests, you must use ..IgnoreError of httpRequest variable associated with the httpIgnoreRedirection constant.
Access to REST APIs from a domain other than the one hosting the site from a browser code (Cross-domain) is blocked by default (Cross-Origin Request Blocked). To avoid being blocked, specific authorizations must be configured on the Web server. This topic is covered in the following post on the support blog: https://blogs.pcsoft.fr/fr/autoriser-acces-api-rest-domaine-cors

Security error in a secure transaction

During a secure transaction, the request may fail due to security errors:

invalid certificate or certificate coming from an unknown company.
the site name specified in the certificate does not correspond to a server.
invalid or expired certificate date.
redirection to a non-secure server.

These errors are returned by ErrorInfo.

If one of these errors occurs, you can re-run the request while ignoring the errors. To do so, all you have to do is modify the ..IgnoreError property of httpRequest variable:

Error returned by ErrorInfo (with the errCode constant)	Value of ..IgnoreError property of httpRequest variable (these values can be combined)	Description

httpErrorInvalidCertificate Invalid certificate or certificate coming from an unknown company	httpIgnoreInvalidCertificate	The certificate is ignored.
httpErrorInvalidCertificateName The site name specified in the certificate does not correspond to a server	httpIgnoreInvalidCertificateName	The site name specified in the certificate is ignored.
httpErrorExpiredCertificate Invalid or expired certificate date	httpIgnoreExpiredCertificate	The certificate date is ignored
httpErrorRedirectToHTTP Redirection to a non-secure server	httpIgnoreRedirectToHTTP	The redirection to a non-secure server is allowed.
httpIgnoreRedirectToHTTPS Redirection to a secure server	httpIgnoreRedirectToHTTPS	The redirection to a secure server is allowed.
	httpIgnoreRevocation	The certificate found in the list of revoked certificates is not checked.

Notes:

When the HTTP queries are run in several threads, the HTTP.IgnoreError variable has a specific value for each thread.

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