boards/sam3x-ek/examples/sam3x-ek_http_server/main.c

   1 /**
   2  * \file
   3  * <!--
   4  * This file is part of BeRTOS.
   5  *
   6  * Bertos is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * As a special exception, you may use this file as part of a free software
  21  * library without restriction.  Specifically, if other files instantiate
  22  * templates or use macros or inline functions from this file, or you compile
  23  * this file and link it with other files to produce an executable, this
  24  * file does not by itself cause the resulting executable to be covered by
  25  * the GNU General Public License.  This exception does not however
  26  * invalidate any other reasons why the executable file might be covered by
  27  * the GNU General Public License.
  28  *
  29  * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
  30  *
  31  * -->
  32  *
  33  * \author Andrea Righi <arighi@develer.com>
  34  * \author Daniele Basile <asterix@develer.com>
  35  *
  36  * \brief Simple Http server.
  37  *
  38  * This simple web server read the site's pages from SD card, and manage
  39  * the cases where SD is not present or page not found, using embedded pages.
  40  * Quering from browser some cgi page, the server return a json dictionary.
  41  */
  42
  43
  44 #include "bitmaps.h"
  45
  46 #include "hw/hw_http.h"
  47 #include "hw/hw_sd.h"
  48 #include "hw/hw_adc.h"
  49 #include "hw/hw_sdram.h"
  50 #include "hw/hw_led.h"
  51 #include "hw/hw_lcd.h"
  52
  53 // Define logging setting (for cfg/log.h module).
  54 #define LOG_LEVEL         3
  55 #define LOG_VERBOSITY     0
  56 #include <cfg/log.h>
  57 #include <cfg/debug.h>
  58
  59 #include <cpu/irq.h>
  60 #include <cpu/power.h>
  61
  62 #include <drv/timer.h>
  63 #include <drv/ser.h>
  64 #include <drv/sd.h>
  65 #include <drv/dmac_sam3.h>
  66 #include <drv/adc.h>
  67 #include <drv/lcd_hx8347.h>
  68
  69 #include <kern/proc.h>
  70 #include <kern/monitor.h>
  71 #include <struct/heap.h>
  72
  73 #include <net/http.h>
  74
  75 #include <netif/ethernetif.h>
  76
  77 #include <lwip/ip.h>
  78 #include <lwip/ip_addr.h>
  79 #include <lwip/netif.h>
  80 #include <lwip/tcpip.h>
  81 #include <lwip/dhcp.h>
  82
  83 #include <gfx/gfx.h>
  84 #include <gfx/font.h>
  85 #include <gfx/text.h>
  86
  87 #include <fs/fat.h>
  88
  89 #include <icons/bertos.h>
  90
  91 #include <stdlib.h>
  92 #include <stdio.h>
  93 #include <string.h>
  94
  95 /* Macro to unpack the ip addres from lwip format in 4 int*/
  96 #define IP_ADDR_TO_INT_TUPLE(addr) \
  97                 (int)((addr) >>  0 & 0xff), \
  98                 (int)((addr) >>  8 & 0xff), \
  99                 (int)((addr) >> 16 & 0xff), \
 100                 (int)((addr) >> 24 & 0xff)
 101
 102 /* Network interface global variables */
 103 static struct ip_addr ipaddr, netmask, gw;
 104 static struct netif netif;
 105
 106
 107 #define GET_LED_STATUS(status, led_id)     (((status) & BV((led_id))) >> (led_id))
 108 #define CLEAR_LED_STATUS(status, led_id)   ((status) &= ~BV((led_id)))
 109 #define SET_LED_STATUS(status, led_id)     ((status) |= BV((led_id)))
 110
 111 typedef struct BoardStatus
 112 {
 113         char local_ip[sizeof("123.123.123.123")];
 114         char last_connected_ip[sizeof("123.123.123.123")];
 115         uint8_t led_status;
 116         uint16_t internal_temp;
 117         uint32_t up_time;
 118         size_t tot_req;
 119 } BoardStatus;
 120
 121 static BoardStatus status;
 122 static uint8_t raster[RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)];
 123 static Bitmap *lcd_bitmap;
 124 extern Font font_gohu;
 125 static int lcd_brightness = LCD_BACKLIGHT_MAX;
 126 static struct Heap heap;
 127
 128
 129 static void init(void)
 130 {
 131         /* Enable all the interrupts */
 132         IRQ_ENABLE;
 133
 134         /* Initialize debugging module (allow kprintf(), etc.) */
 135         kdbg_init();
 136         /* Initialize system timer */
 137         timer_init();
 138
 139         /*
 140          * Kernel initialization: processes (allow to create and dispatch
 141          * processes using proc_new()).
 142          */
 143         proc_init();
 144         sdram_init();
 145         dmac_init();
 146         adc_init();
 147
 148         /* Enable the adc to read internal temperature sensor */
 149         hw_enableTempRead();
 150         LED_INIT();
 151
 152         heap_init(&heap, (void *)SDRAM_BASE, SDRAM_SIZE);
 153         lcd_bitmap = heap_allocmem(&heap, RAST_SIZE(LCD_WIDTH, LCD_HEIGHT));
 154         if (lcd_bitmap)
 155                 kprintf("Allocated memory for display raster, addr 0x%x\n", (unsigned)lcd_bitmap);
 156         else
 157         {
 158                 kprintf("Error allocating memory for LCD raster!\n");
 159         }
 160
 161         lcd_hx8347_init();
 162         lcd_setBacklight(lcd_brightness);
 163
 164         gfx_bitmapInit(lcd_bitmap, raster, LCD_WIDTH, LCD_HEIGHT);
 165         gfx_setFont(lcd_bitmap, &font_luBS14);
 166         lcd_hx8347_blitBitmap(lcd_bitmap);
 167
 168         /* Initialize TCP/IP stack */
 169         tcpip_init(NULL, NULL);
 170
 171         /* Bring up the network interface */
 172         netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ethernetif_init, tcpip_input);
 173         netif_set_default(&netif);
 174         netif_set_up(&netif);
 175 }
 176
 177 static void sec_to_hms(uint32_t sec_time, uint32_t *h, uint32_t *m,  uint32_t *s)
 178 {
 179         *m = sec_time / 60;
 180         *h = (*m) / 60;
 181         *s = sec_time - ((*m) * 60) - ((*h) * 3600);
 182 }
 183
 184 static NORETURN void proc_displayRefresh(void)
 185 {
 186         while (1)
 187         {
 188                 //LOG_INFO("Refresh display\n");
 189                 uint32_t m;
 190                 uint32_t h;
 191                 uint32_t s;
 192                 status.internal_temp = hw_convertToDegree(adc_read(ADC_TEMPERATURE_CH));
 193                 status.up_time += 5;
 194                 sec_to_hms(status.up_time, &h, &m, &s);
 195
 196                 text_xprintf(lcd_bitmap, 11, 0, TEXT_FILL, " ");
 197                 text_xprintf(lcd_bitmap, 11, 0, 0, "Board ip: %s", status.local_ip);
 198
 199                 text_xprintf(lcd_bitmap, 12, 0, TEXT_FILL, " ");
 200                 text_xprintf(lcd_bitmap, 12, 0, 0, "Last connected ip: %s", status.last_connected_ip);
 201
 202                 text_xprintf(lcd_bitmap, 13, 0, TEXT_FILL, " ");
 203                 text_xprintf(lcd_bitmap, 13, 0, 0, "Temperature: %d.%dC",       status.internal_temp / 10, status.internal_temp % 10);
 204
 205                 text_xprintf(lcd_bitmap, 14, 0, TEXT_FILL, " ");
 206                 text_xprintf(lcd_bitmap, 14, 0, 0, "Up time: %ldh %ldm %lds", h, m, s);
 207
 208                 lcd_hx8347_blitBitmap(lcd_bitmap);
 209                 lcd_hx8347_blitBitmap24(10, 0, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
 210
 211                 timer_delay(5000);
 212         }
 213 }
 214
 215
 216 static uint8_t tx_buf[2048];
 217
 218 /*
 219  * Return a JSON string of board status.
 220  */
 221 static int cgi_status(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 222 {
 223         (void)recv_buf;
 224         (void)recv_len;
 225         (void)name;
 226
 227         status.tot_req++;
 228         uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
 229         //Update board status.
 230         sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->remote_ip.addr));
 231         sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->local_ip.addr));
 232
 233         sprintf((char *)tx_buf, "{ \"local_ip\":\"%s\",\"last_connected_ip\":\"%s\", \"temp\":%d.%d,\"volt\":%d.%d,\"up_time\":%ld,\"tot_req\":%d, \
 234 \"leds\":{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}}",
 235                                                                 status.local_ip, status.last_connected_ip,
 236                                                                 status.internal_temp / 10, status.internal_temp % 10,
 237                                                                 volt / 1000, volt % 1000,
 238                                                                 status.up_time, status.tot_req,
 239                                                                 GET_LED_STATUS(status.led_status, 0),
 240                                                                 GET_LED_STATUS(status.led_status, 1),
 241                                                                 GET_LED_STATUS(status.led_status, 2));
 242
 243         http_sendOk(client, HTTP_CONTENT_JSON);
 244         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 245         return 0;
 246 }
 247
 248 static int cgi_logo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 249 {
 250         (void)recv_buf;
 251         (void)recv_len;
 252         (void)name;
 253
 254         http_sendOk(client, HTTP_CONTENT_JPEG);
 255         netconn_write(client, bertos_logo_jpg, bertos_logo_jpg_len, NETCONN_NOCOPY);
 256         return 0;
 257 }
 258
 259 /*
 260  * Return the internal micro temperature string.
 261  */
 262 static int cgi_temp(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 263 {
 264         (void)recv_buf;
 265         (void)recv_len;
 266         (void)name;
 267
 268         sprintf((char *)tx_buf, "[%d.%d]", status.internal_temp / 10, status.internal_temp % 10);
 269
 270         http_sendOk(client, HTTP_CONTENT_JSON);
 271         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 272         return 0;
 273 }
 274
 275
 276 /*
 277  * Return the board uptime.
 278  */
 279 static int cgi_uptime(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 280 {
 281         (void)recv_buf;
 282         (void)recv_len;
 283         (void)name;
 284
 285         uint32_t m;
 286         uint32_t h;
 287         uint32_t s;
 288         sec_to_hms(status.up_time, &h, &m, &s);
 289
 290         sprintf((char *)tx_buf, "[\"%ldh %ldm %lds\"]", h, m, s);
 291
 292         http_sendOk(client, HTTP_CONTENT_JSON);
 293         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 294         return 0;
 295 }
 296
 297 /*
 298  * Return the VR1 potentiometer voltage.
 299  */
 300 static int cgi_resistor(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 301 {
 302         (void)recv_buf;
 303         (void)recv_len;
 304         (void)name;
 305
 306         uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
 307         kprintf("volt %d\n", volt);
 308         sprintf((char *)tx_buf, "[ \"%d.%dV\" ]",  volt / 1000, volt % 1000);
 309
 310         http_sendOk(client, HTTP_CONTENT_JSON);
 311         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 312         return 0;
 313 }
 314
 315
 316 #define CGI_LED_ID_KEY    "n"
 317 #define CGI_LED_CMD_KEY   "set"
 318
 319 static char key_value[80];
 320
 321 /*
 322  * Reply to client the request string.
 323  */
 324 static int cgi_led(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 325 {
 326         (void)recv_buf;
 327         (void)recv_len;
 328         (void)name;
 329
 330         char *query_str = strstr(name, "?") + 1;
 331         size_t query_str_len = strlen(query_str);
 332         int led_id;
 333         int led_cmd;
 334
 335         int len = http_tokenizeGetRequest(query_str, query_str_len);
 336
 337         LOG_INFO("Found %d key/value pair\n", len);
 338
 339         if (http_getValue(query_str, query_str_len, CGI_LED_ID_KEY, key_value, sizeof(key_value)) < 0)
 340         {
 341                 LOG_ERR("key %s, not found\n", CGI_LED_ID_KEY);
 342                 goto error;
 343         }
 344
 345         LOG_INFO("Found key %s = %s\n", CGI_LED_ID_KEY, key_value);
 346         led_id = atoi(key_value);
 347
 348
 349         if (http_getValue(query_str, query_str_len, CGI_LED_CMD_KEY, key_value, sizeof(key_value)) < 0)
 350         {
 351                 LOG_ERR("key %s, not found\n", CGI_LED_CMD_KEY);
 352                 goto error;
 353         }
 354
 355         LOG_INFO("Found key %s = %s\n", CGI_LED_CMD_KEY, key_value);
 356         led_cmd = atoi(key_value);
 357
 358         if (led_cmd)
 359         {
 360                 LED_ON(led_id);
 361                 SET_LED_STATUS(status.led_status, led_id);
 362         }
 363         else
 364         {
 365                 LED_OFF(led_id);
 366                 CLEAR_LED_STATUS(status.led_status, led_id);
 367         }
 368
 369         sprintf((char *)tx_buf, "{\"n\":%d, \"set\":,%d}", led_id, led_cmd);
 370
 371         http_sendOk(client, HTTP_CONTENT_JSON);
 372         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 373         return 0;
 374
 375 error:
 376         http_sendInternalErr(client, HTTP_CONTENT_JSON);
 377         return 0;
 378 }
 379
 380 static int cgi_ledStatus(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 381 {
 382         (void)recv_buf;
 383         (void)recv_len;
 384         (void)name;
 385
 386         sprintf((char *)tx_buf, "{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}",
 387                                                                 GET_LED_STATUS(status.led_status, 0),
 388                                                                 GET_LED_STATUS(status.led_status, 1),
 389                                                                 GET_LED_STATUS(status.led_status, 2));
 390
 391         http_sendOk(client, HTTP_CONTENT_JSON);
 392         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 393         return 0;
 394 }
 395
 396
 397 #define CGI_MSG_CMD_KEY   "msg"
 398
 399 static int cgi_displayMsg(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 400 {
 401         (void)recv_buf;
 402         (void)recv_len;
 403         (void)name;
 404
 405         char *query_str = strstr(name, "?") + 1;
 406         size_t query_str_len = strlen(query_str);
 407
 408         int len = http_tokenizeGetRequest(query_str, query_str_len);
 409
 410         LOG_INFO("Found %d key/value pair\n", len);
 411
 412         if (http_getValue(query_str, query_str_len, CGI_MSG_CMD_KEY, key_value, sizeof(key_value)) < 0)
 413         {
 414                 LOG_ERR("key %s, not found\n", CGI_MSG_CMD_KEY);
 415                 goto error;
 416         }
 417
 418         LOG_INFO("Found key %s = %s\n", CGI_MSG_CMD_KEY, key_value);
 419
 420         text_xprintf(lcd_bitmap, 10, 0, TEXT_FILL, " ");
 421         text_xprintf(lcd_bitmap, 10, 0, TEXT_CENTER, "%s", key_value);
 422
 423         http_sendOk(client, HTTP_CONTENT_JSON);
 424         return 0;
 425
 426 error:
 427         http_sendInternalErr(client, HTTP_CONTENT_JSON);
 428         return 0;
 429 }
 430
 431 /*
 432  * Reply to client the request string.
 433  */
 434 static int cgi_echo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 435 {
 436         (void)name;
 437
 438         http_sendOk(client, HTTP_CONTENT_PLAIN);
 439         netconn_write(client, recv_buf, recv_len, NETCONN_COPY);
 440         return 0;
 441 }
 442
 443 /*
 444  * Return to client a string that display the CHIP ID information.
 445  * See datasheet for more detail.
 446  */
 447 static int cgi_chipInfo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 448 {
 449         (void)recv_buf;
 450         (void)recv_len;
 451         (void)name;
 452
 453         sprintf((char *)tx_buf, "{ \"core_name\":\"%s\", \"arch_name\":\"%s\", \"sram_size\":\"%s\",\"flash_size\":\"%s\", \"mem_boot_type\":\"%s\" }",
 454                                                 chipid_eproc_name(CHIPID_EPRCOC()),
 455                                                 chipid_archnames(CHIPID_ARCH()),
 456                                                 chipid_sramsize(CHIPID_SRAMSIZ()),
 457                                                 chipid_nvpsize(CHIPID_NVPSIZ()),
 458                                                 chipid_nvptype(CHIPID_NVTYP()));
 459
 460         http_sendOk(client, HTTP_CONTENT_JSON);
 461         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 462
 463         return 0;
 464 }
 465
 466
 467 static int cgi_error(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 468 {
 469         (void)client;
 470         (void)name;
 471         (void)recv_buf;
 472         (void)recv_len;
 473
 474         return -1;
 475 }
 476
 477
 478 /*
 479  * Default function that http server call every client request, if it doesn't match a cgi table.
 480  * In this implementation all client request are associate to real file stored on FAT file
 481  * sistem on SD card. If the file there is not on SD card the server reply to client the
 482  * error File not found, and send an harcoded page. In the same way, the server reply
 483  * error page if the SD card is not present.
 484  *
 485  */
 486 static int http_htmPageLoad(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
 487 {
 488         (void)recv_buf;
 489         (void)recv_len;
 490
 491         if (SD_CARD_PRESENT())
 492         {
 493
 494                 // SD fat filesystem context
 495                 Sd sd;
 496                 FATFS fs;
 497                 FatFile in_file;
 498                 FRESULT result;
 499
 500                 bool sd_ok = sd_init(&sd, NULL, 0);
 501                 if (sd_ok)
 502                 {
 503                         LOG_INFO("Mount FAT filesystem.\n");
 504                         result = f_mount(0, &fs);
 505                         if (result != FR_OK)
 506                         {
 507                                 LOG_ERR("Mounting FAT volumes error[%d]\n", result);
 508                                 sd_ok = false;
 509                                 f_mount(0, NULL);
 510                         }
 511
 512                         if (sd_ok)
 513                         {
 514                                 result = fatfile_open(&in_file, name,  FA_OPEN_EXISTING | FA_READ);
 515
 516                                 size_t count = 0;
 517                                 if (result == FR_OK)
 518                                 {
 519                                         LOG_INFO("Opened file '%s' size %ld\n", name, in_file.fat_file.fsize);
 520
 521                                         int type = http_searchContentType(name);
 522                                         http_sendOk(client, type);
 523
 524                                         while (count < in_file.fat_file.fsize)
 525                                         {
 526                                                 int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
 527                                                 netconn_write(client, tx_buf, len, NETCONN_COPY);
 528                                                 count += len;
 529                                         }
 530
 531                                         kfile_flush(&in_file.fd);
 532                                         kfile_close(&in_file.fd);
 533
 534                                         LOG_INFO("Sent: %d\n", count);
 535                                 }
 536                                 else
 537                                 {
 538                                         LOG_ERR("Unable to open file: '%s' error[%d]\n",  name, result);
 539                                         http_sendFileNotFound(client, HTTP_CONTENT_HTML);
 540                                         netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
 541                                 }
 542                         }
 543                 }
 544                 f_mount(0, NULL);
 545                 LOG_INFO("Umount FAT filesystem.\n");
 546         }
 547         else
 548         {
 549                 http_sendFileNotFound(client, HTTP_CONTENT_HTML);
 550                 netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
 551         }
 552
 553         return 0;
 554 }
 555
 556
 557 /*
 558  * Static cgi table where we associate callback to page.
 559  */
 560 static HttpCGI cgi_table[] =
 561 {
 562         { CGI_MATCH_NAME, "echo",                cgi_echo          },
 563         { CGI_MATCH_NAME, "get_temperature",     cgi_temp          },
 564         { CGI_MATCH_NAME, "get_uptime",          cgi_uptime        },
 565         { CGI_MATCH_NAME, "get_resistor",        cgi_resistor      },
 566         { CGI_MATCH_NAME, "set_led",             cgi_led           },
 567         { CGI_MATCH_NAME, "get_ledStatus",       cgi_ledStatus     },
 568         { CGI_MATCH_NAME, "error",               cgi_error         },
 569         { CGI_MATCH_NAME, "status",              cgi_status        },
 570         { CGI_MATCH_NAME, "get_chipinfo",        cgi_chipInfo      },
 571         { CGI_MATCH_NAME, "display",             cgi_displayMsg    },
 572         { CGI_MATCH_NAME, "bertos_logo_jpg",     cgi_logo          },
 573         { CGI_MATCH_NONE,  NULL,                 NULL              }
 574 };
 575
 576
 577 int main(void)
 578 {
 579         struct netconn *server;
 580
 581         /* Hardware initialization */
 582         init();
 583         http_init(http_htmPageLoad, cgi_table);
 584
 585         proc_new(proc_displayRefresh, NULL, KERN_MINSTACKSIZE * 2, NULL);
 586
 587         dhcp_start(&netif);
 588         while (!netif.ip_addr.addr)
 589                 timer_delay(DHCP_FINE_TIMER_MSECS);
 590
 591         sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
 592         sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(0));
 593         kprintf("dhcp ok: ip = %s", status.local_ip);
 594
 595         text_xprintf(lcd_bitmap, 12, 0, 0, "Board ip: %s", status.local_ip);
 596
 597         lcd_hx8347_blitBitmap(lcd_bitmap);
 598         lcd_hx8347_blitBitmap24(12, 0, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
 599
 600         server = netconn_new(NETCONN_TCP);
 601         netconn_bind(server, IP_ADDR_ANY, 80);
 602         netconn_listen(server);
 603
 604         while (1)
 605         {
 606                 http_poll(server);
 607         }
 608 }