Ilya I
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.
services/http/server/impl/RPCHandler.cpp@0:e614f7875b60, 2010-06-12 (annotated)
- Committer:
- iva2k
- Date:
- Sat Jun 12 06:01:50 2010 +0000
- Revision:
- 0:e614f7875b60
- Child:
- 1:3ee499525aa5
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| iva2k | 0:e614f7875b60 | 1 | |
| iva2k | 0:e614f7875b60 | 2 | /* |
| iva2k | 0:e614f7875b60 | 3 | Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) |
| iva2k | 0:e614f7875b60 | 4 | |
| iva2k | 0:e614f7875b60 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| iva2k | 0:e614f7875b60 | 6 | of this software and associated documentation files (the "Software"), to deal |
| iva2k | 0:e614f7875b60 | 7 | in the Software without restriction, including without limitation the rights |
| iva2k | 0:e614f7875b60 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| iva2k | 0:e614f7875b60 | 9 | copies of the Software, and to permit persons to whom the Software is |
| iva2k | 0:e614f7875b60 | 10 | furnished to do so, subject to the following conditions: |
| iva2k | 0:e614f7875b60 | 11 | |
| iva2k | 0:e614f7875b60 | 12 | The above copyright notice and this permission notice shall be included in |
| iva2k | 0:e614f7875b60 | 13 | all copies or substantial portions of the Software. |
| iva2k | 0:e614f7875b60 | 14 | |
| iva2k | 0:e614f7875b60 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| iva2k | 0:e614f7875b60 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| iva2k | 0:e614f7875b60 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| iva2k | 0:e614f7875b60 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| iva2k | 0:e614f7875b60 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| iva2k | 0:e614f7875b60 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| iva2k | 0:e614f7875b60 | 21 | THE SOFTWARE. |
| iva2k | 0:e614f7875b60 | 22 | */ |
| iva2k | 0:e614f7875b60 | 23 | |
| iva2k | 0:e614f7875b60 | 24 | #include "RPCHandler.h" |
| iva2k | 0:e614f7875b60 | 25 | #include "rpc.h" |
| iva2k | 0:e614f7875b60 | 26 | |
| iva2k | 0:e614f7875b60 | 27 | //#define __DEBUG |
| iva2k | 0:e614f7875b60 | 28 | #include "dbg/dbg.h" |
| iva2k | 0:e614f7875b60 | 29 | |
| iva2k | 0:e614f7875b60 | 30 | #define RPC_DATA_LEN 128 |
| iva2k | 0:e614f7875b60 | 31 | |
| iva2k | 0:e614f7875b60 | 32 | RPCHandler::RPCHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : HTTPRequestHandler(rootPath, path, pTCPSocket) |
| iva2k | 0:e614f7875b60 | 33 | {} |
| iva2k | 0:e614f7875b60 | 34 | |
| iva2k | 0:e614f7875b60 | 35 | RPCHandler::~RPCHandler() |
| iva2k | 0:e614f7875b60 | 36 | { |
| iva2k | 0:e614f7875b60 | 37 | DBG("\r\nHandler destroyed\r\n"); |
| iva2k | 0:e614f7875b60 | 38 | } |
| iva2k | 0:e614f7875b60 | 39 | |
| iva2k | 0:e614f7875b60 | 40 | void RPCHandler::doGet() |
| iva2k | 0:e614f7875b60 | 41 | { |
| iva2k | 0:e614f7875b60 | 42 | DBG("\r\nIn RPCHandler::doGet()\r\n"); |
| iva2k | 0:e614f7875b60 | 43 | char resp[RPC_DATA_LEN] = {0}; |
| iva2k | 0:e614f7875b60 | 44 | char req[RPC_DATA_LEN] = {0}; |
| iva2k | 0:e614f7875b60 | 45 | |
| iva2k | 0:e614f7875b60 | 46 | DBG("\r\nPath : %s\r\n", path().c_str()); |
| iva2k | 0:e614f7875b60 | 47 | DBG("\r\nRoot Path : %s\r\n", rootPath().c_str()); |
| iva2k | 0:e614f7875b60 | 48 | |
| iva2k | 0:e614f7875b60 | 49 | //Remove path |
| iva2k | 0:e614f7875b60 | 50 | strncpy(req, path().c_str() + rootPath().length(), RPC_DATA_LEN-1); |
| iva2k | 0:e614f7875b60 | 51 | DBG("\r\nRPC req : %s\r\n", req); |
| iva2k | 0:e614f7875b60 | 52 | |
| iva2k | 0:e614f7875b60 | 53 | //Remove %20, +, from req |
| iva2k | 0:e614f7875b60 | 54 | cleanReq(req); |
| iva2k | 0:e614f7875b60 | 55 | DBG("\r\nRPC req : %s\r\n", req); |
| iva2k | 0:e614f7875b60 | 56 | |
| iva2k | 0:e614f7875b60 | 57 | //Do RPC Call |
| iva2k | 0:e614f7875b60 | 58 | mbed::rpc(req, resp); //FIXME: Use bool result |
| iva2k | 0:e614f7875b60 | 59 | |
| iva2k | 0:e614f7875b60 | 60 | //Response |
| iva2k | 0:e614f7875b60 | 61 | setContentLen( strlen(resp) ); |
| iva2k | 0:e614f7875b60 | 62 | |
| iva2k | 0:e614f7875b60 | 63 | //Make sure that the browser won't cache this request |
| iva2k | 0:e614f7875b60 | 64 | respHeaders()["Cache-control"]="no-cache;no-store"; |
| iva2k | 0:e614f7875b60 | 65 | // respHeaders()["Cache-control"]="no-store"; |
| iva2k | 0:e614f7875b60 | 66 | respHeaders()["Pragma"]="no-cache"; |
| iva2k | 0:e614f7875b60 | 67 | respHeaders()["Expires"]="0"; |
| iva2k | 0:e614f7875b60 | 68 | |
| iva2k | 0:e614f7875b60 | 69 | //Write data |
| iva2k | 0:e614f7875b60 | 70 | respHeaders()["Connection"] = "close"; |
| iva2k | 0:e614f7875b60 | 71 | writeData(resp, strlen(resp)); |
| iva2k | 0:e614f7875b60 | 72 | DBG("\r\nExit RPCHandler::doGet()\r\n"); |
| iva2k | 0:e614f7875b60 | 73 | } |
| iva2k | 0:e614f7875b60 | 74 | |
| iva2k | 0:e614f7875b60 | 75 | void RPCHandler::doPost() |
| iva2k | 0:e614f7875b60 | 76 | { |
| iva2k | 0:e614f7875b60 | 77 | |
| iva2k | 0:e614f7875b60 | 78 | } |
| iva2k | 0:e614f7875b60 | 79 | |
| iva2k | 0:e614f7875b60 | 80 | void RPCHandler::doHead() |
| iva2k | 0:e614f7875b60 | 81 | { |
| iva2k | 0:e614f7875b60 | 82 | |
| iva2k | 0:e614f7875b60 | 83 | } |
| iva2k | 0:e614f7875b60 | 84 | |
| iva2k | 0:e614f7875b60 | 85 | |
| iva2k | 0:e614f7875b60 | 86 | void RPCHandler::onReadable() //Data has been read |
| iva2k | 0:e614f7875b60 | 87 | { |
| iva2k | 0:e614f7875b60 | 88 | |
| iva2k | 0:e614f7875b60 | 89 | } |
| iva2k | 0:e614f7875b60 | 90 | |
| iva2k | 0:e614f7875b60 | 91 | void RPCHandler::onWriteable() //Data has been written & buf is free |
| iva2k | 0:e614f7875b60 | 92 | { |
| iva2k | 0:e614f7875b60 | 93 | DBG("\r\nRPCHandler::onWriteable() event\r\n"); |
| iva2k | 0:e614f7875b60 | 94 | close(); //Data written, we can close the connection |
| iva2k | 0:e614f7875b60 | 95 | } |
| iva2k | 0:e614f7875b60 | 96 | |
| iva2k | 0:e614f7875b60 | 97 | void RPCHandler::onClose() //Connection is closing |
| iva2k | 0:e614f7875b60 | 98 | { |
| iva2k | 0:e614f7875b60 | 99 | //Nothing to do |
| iva2k | 0:e614f7875b60 | 100 | } |
| iva2k | 0:e614f7875b60 | 101 | |
| iva2k | 0:e614f7875b60 | 102 | void RPCHandler::cleanReq(char* data) |
| iva2k | 0:e614f7875b60 | 103 | { |
| iva2k | 0:e614f7875b60 | 104 | char* p; |
| iva2k | 0:e614f7875b60 | 105 | static const char* lGarbage[2] = {"%20", "+"}; |
| iva2k | 0:e614f7875b60 | 106 | for(int i = 0; i < 2; i++) |
| iva2k | 0:e614f7875b60 | 107 | { |
| iva2k | 0:e614f7875b60 | 108 | while( p = strstr(data, lGarbage[i]) ) |
| iva2k | 0:e614f7875b60 | 109 | { |
| iva2k | 0:e614f7875b60 | 110 | memset((void*) p, ' ', strlen(lGarbage[i])); |
| iva2k | 0:e614f7875b60 | 111 | } |
| iva2k | 0:e614f7875b60 | 112 | } |
| iva2k | 0:e614f7875b60 | 113 | } |
| iva2k | 0:e614f7875b60 | 114 | |
| iva2k | 0:e614f7875b60 | 115 |