From afdfd60b9735a916cf91fbd7a1a4b0895a88a0ba Mon Sep 17 00:00:00 2001
From: edolomb <none@example.com>
Date: Thu, 15 Mar 2018 16:25:12 +0000
Subject: Added client-http demo. It works with socket and DNS.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11776 110e8d01-0319-4d1e-a829-52ad28d1bb01
---
 .../RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c | 119 +++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c

(limited to 'demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c')

diff --git a/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c b/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c
new file mode 100644
index 000000000..bf7d33d13
--- /dev/null
+++ b/demos/ATSAMA5D2/RT-SAMA5D2-XPLAINED-LWIP-HTTP-CLIENT/web/web.c
@@ -0,0 +1,119 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/*
+ * This file is a modified version of the lwIP web server demo. The original
+ * author is unknown because the file didn't contain any license information.
+ */
+
+/**
+ * @file web.c
+ * @brief HTTP client code.
+ * @{
+ */
+
+#include "ch.h"
+
+#include "lwip/netdb.h"
+#include "lwip/sockets.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "web.h"
+#include "chprintf.h"
+
+/* HTTP request */
+static const char *REQUEST = "GET "CONFIG_RESOURCE" HTTP/1.0\r\n"
+                             "Host: "CONFIG_WEBSITE"\r\n"
+                             "User-Agent: SAMA5D2\r\n"
+                             "\r\n";
+
+static char recv_buf[100];
+
+struct addrinfo hints = {
+  .ai_family = AF_INET,
+  .ai_socktype = SOCK_STREAM,
+  };
+
+static struct addrinfo *res;
+
+/*
+ * @brief HTTP client functions.
+ */
+int http_client(void) {
+
+  /* Resolve the IP of the target website */
+  int result = getaddrinfo(CONFIG_WEBSITE, "80", &hints, &res);
+
+  if((result != 0) || (res == NULL)) {
+    chprintf((BaseSequentialStream *)&SD1, "Unable to resolve IP for target website %s\n\r", CONFIG_WEBSITE);
+    return 0;
+  }
+
+  chprintf((BaseSequentialStream *)&SD1,"Target website's IP resolved\n\r");
+
+  /* create a new socket */
+  int s = socket(AF_INET, SOCK_STREAM, 0);
+
+  if(s < 0) {
+    chprintf((BaseSequentialStream *)&SD1, "Unable to allocate a new socket\n\r");
+    return 0;
+  }
+
+  chprintf((BaseSequentialStream *)&SD1, "Socket allocated, id=%d\n\r", s);
+
+  /* connect to the specified server */
+  result = connect(s, res->ai_addr, res->ai_addrlen);
+  if(result != 0) {
+    chprintf((BaseSequentialStream *)&SD1, "Unable to connect to the target website\n\r");
+    close(s);
+    return 0;
+  }
+
+  chprintf((BaseSequentialStream *)&SD1, "Connected to the target website\n\r");
+
+  /* send the request */
+  result = write(s, REQUEST, strlen(REQUEST));
+  if(result < 0) {
+    chprintf((BaseSequentialStream *)&SD1, "Unable to send the HTTP request\r\n");
+    close(s);
+    return 0;
+  }
+  chprintf((BaseSequentialStream *)&SD1, "HTTP request sent\n\r");
+
+  /* print the response */
+  chprintf((BaseSequentialStream *)&SD1, "HTTP response:\n\r");
+  chprintf((BaseSequentialStream *)&SD1,"--------------------------------------------------------------------------------\n\r");
+  int r;
+  do {
+    memset(recv_buf, 0, sizeof(recv_buf));
+    r = read(s, recv_buf, sizeof(recv_buf) - 1);
+    for(int i = 0; i < r; i++) {
+      putchar(recv_buf[i]);
+    }
+    chprintf((BaseSequentialStream *)&SD1,"%s\n\r",recv_buf);
+  } while(r > 0);
+  chprintf((BaseSequentialStream *)&SD1, "--------------------------------------------------------------------------------\n\r");
+
+  lwip_freeaddrinfo(res);
+  close(s);
+  chprintf((BaseSequentialStream *)&SD1, "Socket closed\n\r");
+
+  return 1;
+}
+
+/** @} */
-- 
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