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bug#52434: [patch] [doc] add http-request example to web examples

From: Dr. Arne Babenhauserheide
Subject: bug#52434: [patch] [doc] add http-request example to web examples
Date: Sat, 11 Dec 2021 15:51:41 +0100
User-agent: mu4e 1.6.10; emacs 27.2


the attached patch adds a client example that access the hello-world server.

From 7d41deec7a550a186fb5e653a7007ae38fd62dbd Mon Sep 17 00:00:00 2001
From: Arne Babenhauserheide <arne_bab@web.de>
Date: Sat, 11 Dec 2021 15:43:21 +0100
Subject: [PATCH] doc: Provide full server<->client example

* doc/ref/web.texi: (Server: Hello, World!): Add Server:-Prefix to subsubsection

* doc/ref/web.texi: (Client: Visit the server): Example to access the
defined header.
 doc/ref/web.texi | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/doc/ref/web.texi b/doc/ref/web.texi
index 93cd0214f..7d54a8f42 100644
--- a/doc/ref/web.texi
+++ b/doc/ref/web.texi
@@ -1833,7 +1833,7 @@ implementation's open function.
 Well, enough about the tedious internals.  Let's make a web application!
-@subsubsection Hello, World!
+@subsubsection Server: Hello, World!
 The first program we have to write, of course, is ``Hello, World!''.
 This means that we have to implement a web handler that does what we
@@ -1870,6 +1870,30 @@ By default, the web server listens for requests on
 @code{localhost:8080}.  Visit that address in your web browser to
 test.  If you see the string, @code{Hello World!}, sweet!
+@subsubsection Client: Visit the server
+The second program talks to our server.
+(use-modules (web client)
+             (web http)
+             (web uri)
+             (ice-9 receive))
+(receive (response-status response-body) 
+  (http-request "http://localhost:8080";
+                #:method 'GET
+                #:headers `((content-encoding . (gzip deflate))
+                            (user-agent . "guile web client")
+                            (referer . ,(string->uri "http://www.gnu.org";))
+                            (accept (*/*))
+                            (content-type . (application/json)))
+                #:streaming? #f
+                #:decode-body? #t
+                #:body #f)
+         (display response-body))
+@end example
 @subsubsection Inspecting the Request
 The Hello World program above is a general greeter, responding to all

Best wishes,
Unpolitisch sein
hei├čt politisch sein,
ohne es zu merken.

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