Rob Dobson
A simple web server mainly based on ideas from Jasper Schuurmans Netduino web server
Dependents: RdBlindsServer SpideyWallWeb RdGasUseMonitor
A fast and reliable web server for MBED! http://robdobson.com/2015/08/a-reliable-mbed-webserver/
It has a very neat way to implement REST commands and can serve files from local storage (on LPC1768 for instance) and from SD cards. It also has a caching facility which is particularly useful for serving files from local storage.
The server can be run in the main() thread (and has a sub-2ms response time if this is done) or in a mbed-rtos thread which increases the response time to (a still respectable) 30ms or so.
The latest project that uses this is here - https://developer.mbed.org/users/Bobty/code/SpideyWallWeb/
int main (void)
{
// Ethernet interface
EthernetInterface::init();
// Connect ethernet
EthernetInterface::connect();
// Init the web server
pc.printf("Starting web server\r\n");
char* baseWebFolder = "/sd/"; // should be /sd/ for SDcard files - not used for local file system
RdWebServer webServer;
// Add commands to handle the home page and favicon
webServer.addCommand("", RdWebServerCmdDef::CMD_LOCALFILE, NULL, "index.htm", true);
webServer.addCommand("favicon.ico", RdWebServerCmdDef::CMD_LOCALFILE, NULL, NULL, true);
// Add the lightwall control commands
webServer.addCommand("name", RdWebServerCmdDef::CMD_CALLBACK, &lightwallGetSystemName);
webServer.addCommand("clear", RdWebServerCmdDef::CMD_CALLBACK, &lightwallClear);
webServer.addCommand("rawfill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallRawFill);
webServer.addCommand("fill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallFill);
webServer.addCommand("showleds", RdWebServerCmdDef::CMD_CALLBACK, &lightwallShowLeds);
// Start the server
webServer.init(WEBPORT, &led4, baseWebFolder);
webServer.run();
}
// Get system name - No arguments required
char* lightwallGetSystemName(int method, char*cmdStr, char* argStr, char* msgBuffer, int msgLen,
int contentLen, unsigned char* pPayload, int payloadLen, int splitPayloadPos)
{
// Perform any required actions here ....
// ...
// Return the system name
return systemName;
}
This server was originally based on a Netduino web server from Jasper Schuurmans but has been optimised for speed.
Revision 12:c14ffd4ec125, committed 2015-05-03
- Comitter:
- Bobty
- Date:
- Sun May 03 20:41:35 2015 +0000
- Parent:
- 11:cec51b430b20
- Child:
- 13:4f9c09d3da13
- Commit message:
- Added debugging macros
Changed in this revision
| RdWebServer.cpp | Show annotated file Show diff for this revision Revisions of this file |
| RdWebServer.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/RdWebServer.cpp Sun May 03 18:59:42 2015 +0000
+++ b/RdWebServer.cpp Sun May 03 20:41:35 2015 +0000
@@ -4,6 +4,8 @@
More details at http://robdobson.com/2013/10/moving-my-window-shades-control-to-mbed/
*/
+#define RDWEB_DEBUG 5
+
#include "RdWebServer.h"
#define MAX_CMDSTR_LEN 100
@@ -24,6 +26,8 @@
bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
{
+ printf("Here\r\n");
+ RD_INFO("Here\r\n");
_port = port;
_pStatusLed = pStatusLed;
_pBaseWebFolder = pBaseWebFolder;
@@ -184,6 +188,7 @@
RD_INFO("Requesting file %s\n\r", inFileName);
+#ifdef SUPPORT_FOLDER_VIEW
if ((strlen(inFileName) > 0) && (inFileName[strlen(inFileName)-1] == '/'))
{
RD_INFO("Request directory %s%s\r\n", _pBaseWebFolder, inFileName);
@@ -209,6 +214,7 @@
client.send(httpHeader,strlen(httpHeader));
}
else
+#endif
{
sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
RD_INFO("Filename %s\r\n", filename);
@@ -258,6 +264,9 @@
void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible)
{
+
+#ifdef SUPPORT_LOCAL_FILESYSTEM
+
const int HTTPD_MAX_FNAME_LENGTH = 127;
char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
@@ -325,10 +334,21 @@
client.send_all(fileBuf, rdCnt);
fclose(fp);
}
+
+#else
+
+ RD_WARN("Local file system not supported\r\n");
+ sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
+ client.send(httpHeader,strlen(httpHeader));
+ client.send_all(inFileName,strlen(inFileName));
+
+#endif
}
bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
{
+#ifdef SUPPORT_LOCAL_FILESYSTEM
+
RD_INFO("Reading into cache %s\n\r", fileName);
LocalFileSystem local("local");
FILE* fp = fopen(fileName, "r");
@@ -376,6 +396,9 @@
RD_DBG("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
_bCacheValid = true;
return true;
+#else
+ return false;
+#endif
}
bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
--- a/RdWebServer.h Sun May 03 18:59:42 2015 +0000
+++ b/RdWebServer.h Sun May 03 20:41:35 2015 +0000
@@ -10,26 +10,48 @@
#include "mbed.h"
#include "EthernetInterface.h"
-#if defined(DEBUG) && (DEBUG > 3)
+#ifdef RDWEB_DEBUG
+#if (RDWEB_DEBUG > 3)
#define RD_DBG(x, ...) std::printf("[RD_DBG: %s:%d]" x "\r\n", __FILE__, __LINE__, ##__VA_ARGS__);
#else
#define RD_DBG(x, ...)
#endif
-#if defined(DEBUG) && (DEBUG > 2)
+#else
+#define RD_DBG(x, ...)
+#endif
+
+#ifdef RDWEB_DEBUG
+#if (RDWEB_DEBUG > 2)
#define RD_INFO(x, ...) std::printf("[RD_INFO: %s:%d]" x "\r\n", __FILE__, __LINE__, ##__VA_ARGS__);
#else
#define RD_INFO(x, ...)
#endif
-#if defined(DEBUG) && (DEBUG > 1)
+#else
+#define RD_INFO(x, ...)
+#endif
+
+#ifdef RDWEB_DEBUG
+#if (RDWEB_DEBUG > 1)
#define RD_WARN(x, ...) std::printf("[RD_WARNING: %s:%d]" x "\r\n", __FILE__, __LINE__, ##__VA_ARGS__);
#else
#define RD_WARN(x, ...)
#endif
-#if defined(DEBUG) && (DEBUG > 0)
+#else
+#define RD_WARN(x, ...)
+#endif
+
+#ifdef RDWEB_DEBUG
+#if (RDWEB_DEBUG > 0)
#define RD_ERR(x, ...) std::printf("[RD_ERR: %s:%d]" x "\r\n", __FILE__, __LINE__, ##__VA_ARGS__);
#else
#define RD_ERR(x, ...)
#endif
+#else
+#define RD_ERR(x, ...)
+#endif
+
+//#define SUPPORT_LOCAL_FILESYSTEM 1
+//#define SUPPORT_FOLDER_VIEW 1
extern RawSerial pc;