Example program with HTTPServer and sensor data streaming over TCPSockets, using Donatien Garnier's Net APIs and services code on top of LWIP. Files StreamServer.h and .cpp encapsulate streaming over TCPSockets. Broadcast is done by sendToAll(), and all incoming data is echoed back to the client. Echo code can be replaced with some remote control of the streaming interface. See main() that shows how to periodically send some data to all subscribed clients. To subscribe, a client should open a socket at <mbed_ip> port 123. I used few lines in TCL code to set up a quick sink for the data. HTTP files are served on port 80 concurrently to the streaming.

Dependencies:   mbed

Revision:
0:e614f7875b60
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/services/mysql/sha1.h	Sat Jun 12 06:01:50 2010 +0000
@@ -0,0 +1,145 @@
+/**
+ * \file sha1.h
+ *
+ *  Copyright (C) 2006-2010, Paul Bakker <polarssl_maintainer at polarssl.org>
+ *  All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef POLARSSL_SHA1_H
+#define POLARSSL_SHA1_H
+
+/**
+ * \brief          SHA-1 context structure
+ */
+typedef struct
+{
+    unsigned long total[2];     /*!< number of bytes processed  */
+    unsigned long state[5];     /*!< intermediate digest state  */
+    unsigned char buffer[64];   /*!< data block being processed */
+
+    unsigned char ipad[64];     /*!< HMAC: inner padding        */
+    unsigned char opad[64];     /*!< HMAC: outer padding        */
+}
+sha1_context;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          SHA-1 context setup
+ *
+ * \param ctx      context to be initialized
+ */
+void sha1_starts( sha1_context *ctx );
+
+/**
+ * \brief          SHA-1 process buffer
+ *
+ * \param ctx      SHA-1 context
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ */
+void sha1_update( sha1_context *ctx, const unsigned char *input, int ilen );
+
+/**
+ * \brief          SHA-1 final digest
+ *
+ * \param ctx      SHA-1 context
+ * \param output   SHA-1 checksum result
+ */
+void sha1_finish( sha1_context *ctx, unsigned char output[20] );
+
+/**
+ * \brief          Output = SHA-1( input buffer )
+ *
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ * \param output   SHA-1 checksum result
+ */
+void sha1( const unsigned char *input, int ilen, unsigned char output[20] );
+
+#if 0 //No need for that
+/**
+ * \brief          Output = SHA-1( file contents )
+ *
+ * \param path     input file name
+ * \param output   SHA-1 checksum result
+ *
+ * \return         0 if successful, 1 if fopen failed,
+ *                 or 2 if fread failed
+ */
+int sha1_file( const char *path, unsigned char output[20] );
+#endif
+
+/**
+ * \brief          SHA-1 HMAC context setup
+ *
+ * \param ctx      HMAC context to be initialized
+ * \param key      HMAC secret key
+ * \param keylen   length of the HMAC key
+ */
+void sha1_hmac_starts( sha1_context *ctx, const unsigned char *key, int keylen );
+
+/**
+ * \brief          SHA-1 HMAC process buffer
+ *
+ * \param ctx      HMAC context
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ */
+void sha1_hmac_update( sha1_context *ctx, const unsigned char *input, int ilen );
+
+/**
+ * \brief          SHA-1 HMAC final digest
+ *
+ * \param ctx      HMAC context
+ * \param output   SHA-1 HMAC checksum result
+ */
+void sha1_hmac_finish( sha1_context *ctx, unsigned char output[20] );
+
+/**
+ * \brief          SHA-1 HMAC context reset
+ *
+ * \param ctx      HMAC context to be reset
+ */
+void sha1_hmac_reset( sha1_context *ctx );
+
+/**
+ * \brief          Output = HMAC-SHA-1( hmac key, input buffer )
+ *
+ * \param key      HMAC secret key
+ * \param keylen   length of the HMAC key
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ * \param output   HMAC-SHA-1 result
+ */
+void sha1_hmac( const unsigned char *key, int keylen,
+                const unsigned char *input, int ilen,
+                unsigned char output[20] );
+
+/**
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int sha1_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* sha1.h */