Kyrylo Cherneha / ModBusTCP

ModBusTCP with some fixes

HTTPD.cpp@0:d18dff347122, 2013-11-13 (annotated)

Committer:
okini3939
Date:
Wed Nov 13 01:58:04 2013 +0000
Revision:
0:d18dff347122
Child:
1:b724fdb741e7
1st build;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:d18dff347122 1 /* Copyright (C) 2013 Hiroshi Suga, MIT License
okini3939 0:d18dff347122 2 *
okini3939 0:d18dff347122 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
okini3939 0:d18dff347122 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
okini3939 0:d18dff347122 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
okini3939 0:d18dff347122 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
okini3939 0:d18dff347122 7 * furnished to do so, subject to the following conditions:
okini3939 0:d18dff347122 8 *
okini3939 0:d18dff347122 9 * The above copyright notice and this permission notice shall be included in all copies or
okini3939 0:d18dff347122 10 * substantial portions of the Software.
okini3939 0:d18dff347122 11 *
okini3939 0:d18dff347122 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
okini3939 0:d18dff347122 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
okini3939 0:d18dff347122 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
okini3939 0:d18dff347122 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
okini3939 0:d18dff347122 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
okini3939 0:d18dff347122 17 */
okini3939 0:d18dff347122 18
okini3939 0:d18dff347122 19 #include "HTTPD.h"
okini3939 0:d18dff347122 20
okini3939 0:d18dff347122 21 HTTPD * HTTPD::_inst;
okini3939 0:d18dff347122 22
okini3939 0:d18dff347122 23 HTTPD::HTTPD () {
okini3939 0:d18dff347122 24 _inst = this;
okini3939 0:d18dff347122 25 memset(_state, 0, sizeof(_state));
okini3939 0:d18dff347122 26 _handler_count = 0;
okini3939 0:d18dff347122 27 }
okini3939 0:d18dff347122 28
okini3939 0:d18dff347122 29 int HTTPD::start (int port) {
okini3939 0:d18dff347122 30 int i;
okini3939 0:d18dff347122 31
okini3939 0:d18dff347122 32 for (i = 0; i < HTTPD_MAX_CLIENTS; i ++) {
okini3939 0:d18dff347122 33 _state[i].buf = new CircBuffer<char>(HTTPD_BUF_SIZE);
okini3939 0:d18dff347122 34 _state[i].thread = new Thread(child, (void*)i, osPriorityNormal, HTTPD_STACK_SIZE);
okini3939 0:d18dff347122 35 _state[i].client = new TCPSocketConnection;
okini3939 0:d18dff347122 36 }
okini3939 0:d18dff347122 37 #ifdef HTTPD_ENABLE_CLOSER
okini3939 0:d18dff347122 38 _state[HTTPD_MAX_CLIENTS].thread = new Thread(closer, (void*)HTTPD_MAX_CLIENTS, osPriorityNormal, 128);
okini3939 0:d18dff347122 39 _state[HTTPD_MAX_CLIENTS].client = new TCPSocketConnection;
okini3939 0:d18dff347122 40 #endif
okini3939 0:d18dff347122 41
okini3939 0:d18dff347122 42 _server.bind(port);
okini3939 0:d18dff347122 43 _server.listen();
okini3939 0:d18dff347122 44 _daemon = new Thread(daemon, NULL, osPriorityNormal, 256);
okini3939 0:d18dff347122 45 return 0;
okini3939 0:d18dff347122 46 }
okini3939 0:d18dff347122 47
okini3939 0:d18dff347122 48 void HTTPD::daemon (void const *args) {
okini3939 0:d18dff347122 49 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 50 int i, t = 0;
okini3939 0:d18dff347122 51
okini3939 0:d18dff347122 52 INFO("Wait for new connection...\r\n");
okini3939 0:d18dff347122 53 for (;;) {
okini3939 0:d18dff347122 54 if (t >= 0) {
okini3939 0:d18dff347122 55 if (httpd->_server.accept(*httpd->_state[t].client) == 0) {
okini3939 0:d18dff347122 56 INFO("accept %d\r\n", t);
okini3939 0:d18dff347122 57 httpd->_state[t].thread->signal_set(1);
okini3939 0:d18dff347122 58 }
okini3939 0:d18dff347122 59 } else {
okini3939 0:d18dff347122 60 #ifdef HTTPD_ENABLE_CLOSER
okini3939 0:d18dff347122 61 if (httpd->_server.accept(*httpd->_state[HTTPD_MAX_CLIENTS].client) == 0) {
okini3939 0:d18dff347122 62 INFO("accept x\r\n");
okini3939 0:d18dff347122 63 httpd->_state[HTTPD_MAX_CLIENTS].thread->signal_set(1);
okini3939 0:d18dff347122 64 }
okini3939 0:d18dff347122 65 #endif
okini3939 0:d18dff347122 66 }
okini3939 0:d18dff347122 67
okini3939 0:d18dff347122 68 t = -1;
okini3939 0:d18dff347122 69 for (i = 0; i < HTTPD_MAX_CLIENTS; i ++) {
okini3939 0:d18dff347122 70 if (httpd->_state[i].thread->get_state() == Thread::WaitingAnd) {
okini3939 0:d18dff347122 71 if (t < 0) t = i; // next empty thread
okini3939 0:d18dff347122 72 }
okini3939 0:d18dff347122 73 }
okini3939 0:d18dff347122 74 }
okini3939 0:d18dff347122 75 }
okini3939 0:d18dff347122 76
okini3939 0:d18dff347122 77 void HTTPD::child (void const *arg) {
okini3939 0:d18dff347122 78 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 79 int id = (int)arg;
okini3939 0:d18dff347122 80 int i, n;
okini3939 0:d18dff347122 81 char buf[HTTPD_BUF_SIZE];
okini3939 0:d18dff347122 82
okini3939 0:d18dff347122 83 for (;;) {
okini3939 0:d18dff347122 84 Thread::signal_wait(1);
okini3939 0:d18dff347122 85
okini3939 0:d18dff347122 86 httpd->_state[id].mode = MODE_REQUEST;
okini3939 0:d18dff347122 87 httpd->_state[id].buf->flush();
okini3939 0:d18dff347122 88 httpd->_state[id].keepalive = 0;
okini3939 0:d18dff347122 89 INFO("Connection from %s\r\n", httpd->_state[id].client->get_address());
okini3939 0:d18dff347122 90 httpd->_state[id].client->set_blocking(false, HTTPD_TIMEOUT);
okini3939 0:d18dff347122 91 for (;;) {
okini3939 0:d18dff347122 92 if (! httpd->_state[id].client->is_connected()) break;
okini3939 0:d18dff347122 93
okini3939 0:d18dff347122 94 n = httpd->_state[id].client->receive(buf, sizeof(buf));
okini3939 0:d18dff347122 95 if (n < 0) break;
okini3939 0:d18dff347122 96 buf[n] = 0;
okini3939 0:d18dff347122 97 // DBG("Recv %d '%s'", n, buf);
okini3939 0:d18dff347122 98
okini3939 0:d18dff347122 99 for (i = 0; i < n; i ++) {
okini3939 0:d18dff347122 100 httpd->recvData(id, buf[i]);
okini3939 0:d18dff347122 101 }
okini3939 0:d18dff347122 102 }
okini3939 0:d18dff347122 103
okini3939 0:d18dff347122 104 httpd->_state[id].client->close();
okini3939 0:d18dff347122 105 INFO("Close %s\r\n", httpd->_state[id].client->get_address());
okini3939 0:d18dff347122 106 }
okini3939 0:d18dff347122 107 }
okini3939 0:d18dff347122 108
okini3939 0:d18dff347122 109 void HTTPD::closer (void const *arg) {
okini3939 0:d18dff347122 110 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 111 int id = (int)arg;
okini3939 0:d18dff347122 112
okini3939 0:d18dff347122 113 for (;;) {
okini3939 0:d18dff347122 114 Thread::signal_wait(1);
okini3939 0:d18dff347122 115
okini3939 0:d18dff347122 116 httpd->_state[id].client->close();
okini3939 0:d18dff347122 117 INFO("Close %s\r\n", httpd->_state[id].client->get_address());
okini3939 0:d18dff347122 118 }
okini3939 0:d18dff347122 119 }
okini3939 0:d18dff347122 120