1 ;;; GNU Guix --- Functional package management for GNU
2 ;;; Copyright © 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
4 ;;; This file is part of GNU Guix.
6 ;;; GNU Guix is free software; you can redistribute it and/or modify it
7 ;;; under the terms of the GNU General Public License as published by
8 ;;; the Free Software Foundation; either version 3 of the License, or (at
9 ;;; your option) any later version.
11 ;;; GNU Guix is distributed in the hope that it will be useful, but
12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;; GNU General Public License for more details.
16 ;;; You should have received a copy of the GNU General Public License
17 ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
19 (define-module (guix tests http)
20 #:use-module (ice-9 threads)
21 #:use-module (web server)
22 #:use-module (web server http)
23 #:use-module (web response)
24 #:use-module (srfi srfi-39)
25 #:export (with-http-server
28 http-server-can-listen?
33 ;;; Code to spawn a Web server for testing purposes.
37 (define %http-server-port
38 ;; TCP port to use for the stub HTTP server.
39 (make-parameter 9999))
41 (define (open-http-server-socket)
42 "Return a listening socket for the web server. It is useful to export it so
43 that tests can check whether we succeeded opening the socket and tests skip if
47 (let ((sock (socket PF_INET SOCK_STREAM 0)))
48 (setsockopt sock SOL_SOCKET SO_REUSEADDR 1)
50 (make-socket-address AF_INET INADDR_LOOPBACK
54 (let ((err (system-error-errno args)))
55 (format (current-error-port)
56 "warning: cannot run Web server for tests: ~a~%"
60 (define (http-server-can-listen?)
61 "Return #t if we managed to open a listening socket."
62 (and=> (open-http-server-socket)
68 ;; URL to use for 'home-page' tests.
69 (string-append "http://localhost:" (number->string (%http-server-port))
72 (define* (call-with-http-server code data thunk
74 "Call THUNK with an HTTP server running and returning CODE and DATA (a
75 string) on HTTP requests."
76 (define (http-write server client response body)
78 (let* ((response (write-response response client))
79 (port (response-port response)))
83 (write-response-body response body)))
85 (quit #t) ;exit the server thread
88 ;; Mutex and condition variable to synchronize with the HTTP server.
89 (define %http-server-lock (make-mutex))
90 (define %http-server-ready (make-condition-variable))
92 (define (http-open . args)
93 "Start listening for HTTP requests and signal %HTTP-SERVER-READY."
94 (with-mutex %http-server-lock
95 (let ((result (apply (@@ (web server http) http-open) args)))
96 (signal-condition-variable %http-server-ready)
99 (define-server-impl stub-http-server
100 ;; Stripped-down version of Guile's built-in HTTP server.
102 (@@ (web server http) http-read)
104 (@@ (web server http) http-close))
106 (define (server-body)
107 (define (handle request body)
108 (values (build-response #:code code
109 #:reason-phrase "Such is life"
113 (let ((socket (open-http-server-socket)))
116 (run-server handle stub-http-server
117 `(#:socket ,socket)))
119 (close-port socket)))))
121 (with-mutex %http-server-lock
122 (let ((server (make-thread server-body)))
123 (wait-condition-variable %http-server-ready %http-server-lock)
124 ;; Normally SERVER exits automatically once it has received a request.
127 (define-syntax with-http-server
129 ((_ (code headers) data body ...)
130 (call-with-http-server code data (lambda () body ...)
132 ((_ code data body ...)
133 (call-with-http-server code data (lambda () body ...)))))
135 ;;; http.scm ends here