AMETEK Powervar / HTTPD

HTTP Server, WebSocket support

Fork of HTTPD by Suga koubou

HTTPD.cpp@1:b724fdb741e7, 2017-06-15 (annotated)

Committer:
dgriffin65
Date:
Thu Jun 15 20:17:24 2017 +0000
Revision:
1:b724fdb741e7
Parent:
0:d18dff347122 
Updated to mbed-os

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
dgriffin65 1:b724fdb741e7 29 int HTTPD::start (NetworkStack *ns, int port) {
okini3939 0:d18dff347122 30 int i;
okini3939 0:d18dff347122 31
dgriffin65 1:b724fdb741e7 32 m_ns = ns;
dgriffin65 1:b724fdb741e7 33
okini3939 0:d18dff347122 34 for (i = 0; i < HTTPD_MAX_CLIENTS; i ++) {
okini3939 0:d18dff347122 35 _state[i].buf = new CircBuffer<char>(HTTPD_BUF_SIZE);
dgriffin65 1:b724fdb741e7 36 _state[i].thread = new Thread(osPriorityNormal, HTTPD_STACK_SIZE);
dgriffin65 1:b724fdb741e7 37 _state[i].client = new TCPSocket();
dgriffin65 1:b724fdb741e7 38 _state[i].thread->start(callback(child, (void*)i));
okini3939 0:d18dff347122 39 }
dgriffin65 1:b724fdb741e7 40
okini3939 0:d18dff347122 41 #ifdef HTTPD_ENABLE_CLOSER
okini3939 0:d18dff347122 42 _state[HTTPD_MAX_CLIENTS].thread = new Thread(closer, (void*)HTTPD_MAX_CLIENTS, osPriorityNormal, 128);
dgriffin65 1:b724fdb741e7 43 _state[HTTPD_MAX_CLIENTS].client = new TCPSocket(m_ns);
okini3939 0:d18dff347122 44 #endif
okini3939 0:d18dff347122 45
dgriffin65 1:b724fdb741e7 46 _server.open(m_ns);
okini3939 0:d18dff347122 47 _server.bind(port);
dgriffin65 1:b724fdb741e7 48 _server.set_blocking(true);
okini3939 0:d18dff347122 49 _server.listen();
dgriffin65 1:b724fdb741e7 50 _daemon = new Thread(osPriorityNormal, HTTPD_STACK_SIZE);
dgriffin65 1:b724fdb741e7 51 _daemon->start(HTTPD::daemon);
okini3939 0:d18dff347122 52 return 0;
okini3939 0:d18dff347122 53 }
okini3939 0:d18dff347122 54
dgriffin65 1:b724fdb741e7 55 void HTTPD::daemon () {
okini3939 0:d18dff347122 56 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 57 int i, t = 0;
okini3939 0:d18dff347122 58
okini3939 0:d18dff347122 59 INFO("Wait for new connection...\r\n");
okini3939 0:d18dff347122 60 for (;;) {
okini3939 0:d18dff347122 61 if (t >= 0) {
dgriffin65 1:b724fdb741e7 62 if (httpd->_server.accept(httpd->_state[t].client) == 0) {
okini3939 0:d18dff347122 63 INFO("accept %d\r\n", t);
okini3939 0:d18dff347122 64 httpd->_state[t].thread->signal_set(1);
okini3939 0:d18dff347122 65 }
okini3939 0:d18dff347122 66 } else {
okini3939 0:d18dff347122 67 #ifdef HTTPD_ENABLE_CLOSER
dgriffin65 1:b724fdb741e7 68 if (httpd->_server.accept(httpd->_state[HTTPD_MAX_CLIENTS].client) == 0) {
okini3939 0:d18dff347122 69 INFO("accept x\r\n");
okini3939 0:d18dff347122 70 httpd->_state[HTTPD_MAX_CLIENTS].thread->signal_set(1);
okini3939 0:d18dff347122 71 }
okini3939 0:d18dff347122 72 #endif
okini3939 0:d18dff347122 73 }
okini3939 0:d18dff347122 74
okini3939 0:d18dff347122 75 t = -1;
okini3939 0:d18dff347122 76 for (i = 0; i < HTTPD_MAX_CLIENTS; i ++) {
okini3939 0:d18dff347122 77 if (httpd->_state[i].thread->get_state() == Thread::WaitingAnd) {
okini3939 0:d18dff347122 78 if (t < 0) t = i; // next empty thread
okini3939 0:d18dff347122 79 }
okini3939 0:d18dff347122 80 }
okini3939 0:d18dff347122 81 }
okini3939 0:d18dff347122 82 }
okini3939 0:d18dff347122 83
okini3939 0:d18dff347122 84 void HTTPD::child (void const *arg) {
okini3939 0:d18dff347122 85 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 86 int id = (int)arg;
okini3939 0:d18dff347122 87 int i, n;
okini3939 0:d18dff347122 88 char buf[HTTPD_BUF_SIZE];
okini3939 0:d18dff347122 89
okini3939 0:d18dff347122 90 for (;;) {
okini3939 0:d18dff347122 91 Thread::signal_wait(1);
okini3939 0:d18dff347122 92 httpd->_state[id].mode = MODE_REQUEST;
okini3939 0:d18dff347122 93 httpd->_state[id].buf->flush();
okini3939 0:d18dff347122 94 httpd->_state[id].keepalive = 0;
dgriffin65 1:b724fdb741e7 95 INFO("Connection from client\r\n");
dgriffin65 1:b724fdb741e7 96 // INFO("Connection from %s\r\n", httpd->_state[id].client->get_ip_address());
dgriffin65 1:b724fdb741e7 97
dgriffin65 1:b724fdb741e7 98 httpd->_state[id].client->set_blocking(false);
dgriffin65 1:b724fdb741e7 99 httpd->_state[id].client->set_timeout(HTTPD_TIMEOUT);
dgriffin65 1:b724fdb741e7 100
okini3939 0:d18dff347122 101 for (;;) {
dgriffin65 1:b724fdb741e7 102 //if (! httpd->_state[id].client->is_connected()) break;
okini3939 0:d18dff347122 103
dgriffin65 1:b724fdb741e7 104 n = httpd->_state[id].client->recv(buf, sizeof(buf));
dgriffin65 1:b724fdb741e7 105
dgriffin65 1:b724fdb741e7 106 if (n < 0 ) {
dgriffin65 1:b724fdb741e7 107 printf("HTTPD::child breaking n = %d\r\n", n);
dgriffin65 1:b724fdb741e7 108 break;
dgriffin65 1:b724fdb741e7 109 }
okini3939 0:d18dff347122 110 buf[n] = 0;
dgriffin65 1:b724fdb741e7 111 //DBG("Recv %d ", n);
dgriffin65 1:b724fdb741e7 112 DBG("Recv %d '%s'", n, buf);
okini3939 0:d18dff347122 113
okini3939 0:d18dff347122 114 for (i = 0; i < n; i ++) {
okini3939 0:d18dff347122 115 httpd->recvData(id, buf[i]);
okini3939 0:d18dff347122 116 }
okini3939 0:d18dff347122 117 }
okini3939 0:d18dff347122 118
okini3939 0:d18dff347122 119 httpd->_state[id].client->close();
dgriffin65 1:b724fdb741e7 120 INFO("Closed client connection\r\n");
dgriffin65 1:b724fdb741e7 121 //INFO("Close %s\r\n", httpd->_state[id].client->get_ip_address());
okini3939 0:d18dff347122 122 }
okini3939 0:d18dff347122 123 }
okini3939 0:d18dff347122 124
okini3939 0:d18dff347122 125 void HTTPD::closer (void const *arg) {
okini3939 0:d18dff347122 126 HTTPD *httpd = HTTPD::getInstance();
okini3939 0:d18dff347122 127 int id = (int)arg;
okini3939 0:d18dff347122 128
okini3939 0:d18dff347122 129 for (;;) {
okini3939 0:d18dff347122 130 Thread::signal_wait(1);
okini3939 0:d18dff347122 131
okini3939 0:d18dff347122 132 httpd->_state[id].client->close();
dgriffin65 1:b724fdb741e7 133 INFO("Closed client connection\r\n");
dgriffin65 1:b724fdb741e7 134 //INFO("Close %s\r\n", httpd->_state[id].client->get_ip_address());
okini3939 0:d18dff347122 135 }
okini3939 0:d18dff347122 136 }
okini3939 0:d18dff347122 137