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| author | Dean Camera <dean@fourwalledcubicle.com> | 2010-01-21 13:45:44 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2010-01-21 13:45:44 +0000 |
| commit | 03ee87b35abdb8b92e8b55ec040fa943f9a6786c (patch) | |
| tree | f6afd9650084eae3f0c92f47c6f205694168ad32 /Projects/Incomplete/Webserver/Lib/WebserverApp.c | |
| parent | 41ad6bd6d7e886412f6c12d98f040e51c3ee4fdf (diff) | |
| download | lufa-03ee87b35abdb8b92e8b55ec040fa943f9a6786c.tar.gz lufa-03ee87b35abdb8b92e8b55ec040fa943f9a6786c.tar.bz2 lufa-03ee87b35abdb8b92e8b55ec040fa943f9a6786c.zip | |
Fix up the incomplete Webserver project so that it integrates with the uIP stack correctly. Add simple HTTP webserver as a placeholder until FatFS can be integrated.
Begin to look into the RNDIS Host Class Driver, which seems to crash on test hardware after many packets have been received.
Diffstat (limited to 'Projects/Incomplete/Webserver/Lib/WebserverApp.c')
| -rw-r--r-- | Projects/Incomplete/Webserver/Lib/WebserverApp.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/Projects/Incomplete/Webserver/Lib/WebserverApp.c b/Projects/Incomplete/Webserver/Lib/WebserverApp.c new file mode 100644 index 000000000..97218b2be --- /dev/null +++ b/Projects/Incomplete/Webserver/Lib/WebserverApp.c @@ -0,0 +1,131 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Simple HTTP Webserver Application. When connected to the uIP stack,
+ * this will serve out files to HTTP clients.
+ */
+
+#include "WebserverApp.h"
+
+/** HTTP server response header, for transmission before the page contents. This indicates to the host that a page exists at the
+ * given location, and gives extra connection information.
+ */
+char PROGMEM HTTP200Header[] = "HTTP/1.1 200 OK\r\n"
+ "Server: LUFA RNDIS\r\n"
+ "Content-type: text/html\r\n"
+ "Connection: close\r\n\r\n";
+
+/** HTTP server response header, for transmission before a resource not found error. This indicates to the host that the given
+ * given URL is invalid, and gives extra error information.
+ */
+char PROGMEM HTTP404Header[] = "HTTP/1.1 404 Not Found\r\n"
+ "Server: LUFA RNDIS\r\n"
+ "Connection: close\r\n\r\n";
+
+/****************************************************************************************/
+/** HTTP page to serve to the host when a HTTP request is made. This page is too long for a single response, thus it is automatically
+ * broken up into smaller blocks and sent as a series of packets each time the webserver application callback is run.
+ */
+char PROGMEM HTTPPage[] =
+ "<html>"
+ " <head>"
+ " <title>"
+ " LUFA Webserver Demo"
+ " </title>"
+ " </head>"
+ " <body>"
+ " <h1>Hello from your USB AVR!</h1>"
+ " <p>"
+ " Hello! Welcome to the LUFA RNDIS Demo Webserver test page, running on your USB AVR via the LUFA library. This demonstrates the HTTP webserver, TCP/IP stack and RNDIS demo all running atop the LUFA USB stack."
+ " <br /><br />"
+ " <small>Project Information: <a href=\"http://www.fourwalledcubicle.com/LUFA.php\">http://www.fourwalledcubicle.com/LUFA.php</a>.</small>"
+ " <hr />"
+ " <i>LUFA Version: </i>" LUFA_VERSION_STRING
+ " </p>"
+ " </body>"
+ "</html>";
+
+void WebserverAppCallback(void)
+{
+ char* AppDataPtr = (char*)uip_appdata;
+ uint16_t AppDataSize = 0;
+
+ if (uip_closed() || uip_aborted() || uip_timedout())
+ {
+ /* Terminated or completed connection - don't send any new data */
+ return;
+ }
+ else if (uip_connected())
+ {
+ /* New connection - initialize connection state and data pointer to the appropriate HTTP header */
+ uip_conn->appstate.SendPos = HTTP200Header;
+ uip_conn->appstate.CurrentState = WEBSERVER_STATE_SendHeaders;
+ }
+
+ /* Calculate the maximum segment size and remaining data size */
+ uint16_t BytesRemaining = strlen_P(uip_conn->appstate.SendPos);
+ uint16_t MaxSegSize = uip_mss();
+
+ /* No more bytes remaining in the current data being sent - progress to next data chunk or
+ * terminate the connection once all chunks are sent */
+ if (!(BytesRemaining))
+ {
+ /* Check which data chunk we are currently sending (header or data) */
+ if (uip_conn->appstate.CurrentState == WEBSERVER_STATE_SendHeaders)
+ {
+ uip_conn->appstate.SendPos = HTTPPage;
+ uip_conn->appstate.CurrentState = WEBSERVER_STATE_SendData;
+ }
+ else if (uip_conn->appstate.CurrentState == WEBSERVER_STATE_SendData)
+ {
+ uip_close();
+ uip_conn->appstate.CurrentState = WEBSERVER_STATE_Closed;
+ }
+
+ return;
+ }
+ else if (BytesRemaining > MaxSegSize)
+ {
+ AppDataSize = MaxSegSize;
+ }
+ else
+ {
+ AppDataSize = BytesRemaining;
+ }
+
+ /* Copy over the next data segment to the application buffer, advance send position pointer */
+ strncpy_P(uip_appdata, uip_conn->appstate.SendPos, AppDataSize);
+ uip_conn->appstate.SendPos += AppDataSize;
+
+ /* Send the data to the requesting host */
+ uip_send(AppDataPtr, AppDataSize);
+}
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