weatherstation/firmware/libraries/WiFi/src/WiFiClient 2.cpp

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2022-09-16 09:20:19 +02:00
/*
WiFiClient.cpp - Library for Arduino Wifi shield.
Copyright (c) 2011-2014 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
extern "C" {
#include "utility/wl_definitions.h"
#include "utility/wl_types.h"
#include "string.h"
#include "utility/debug.h"
}
#include "WiFi.h"
#include "WiFiClient.h"
#include "WiFiServer.h"
#include "utility/server_drv.h"
uint16_t WiFiClient::_srcport = 1024;
WiFiClient::WiFiClient() : _sock(MAX_SOCK_NUM) {
}
WiFiClient::WiFiClient(uint8_t sock) : _sock(sock) {
}
int WiFiClient::connect(const char* host, uint16_t port) {
IPAddress remote_addr;
if (WiFi.hostByName(host, remote_addr))
{
return connect(remote_addr, port);
}
return 0;
}
int WiFiClient::connect(IPAddress ip, uint16_t port) {
_sock = getFirstSocket();
if (_sock != NO_SOCKET_AVAIL)
{
ServerDrv::startClient(uint32_t(ip), port, _sock);
WiFiClass::_state[_sock] = _sock;
unsigned long start = millis();
// wait 4 second for the connection to close
while (!connected() && millis() - start < 10000)
delay(1);
if (!connected())
{
return 0;
}
}else{
Serial.println("No Socket available");
return 0;
}
return 1;
}
size_t WiFiClient::write(uint8_t b) {
return write(&b, 1);
}
size_t WiFiClient::write(const uint8_t *buf, size_t size) {
if (_sock >= MAX_SOCK_NUM)
{
setWriteError();
return 0;
}
if (size==0)
{
setWriteError();
return 0;
}
if (!ServerDrv::sendData(_sock, buf, size))
{
setWriteError();
return 0;
}
if (!ServerDrv::checkDataSent(_sock))
{
setWriteError();
return 0;
}
return size;
}
int WiFiClient::available() {
if (_sock != 255)
{
return ServerDrv::availData(_sock);
}
return 0;
}
int WiFiClient::read() {
uint8_t b;
if (!available())
return -1;
ServerDrv::getData(_sock, &b);
return b;
}
int WiFiClient::read(uint8_t* buf, size_t size) {
// sizeof(size_t) is architecture dependent
// but we need a 16 bit data type here
uint16_t _size = size;
if (!ServerDrv::getDataBuf(_sock, buf, &_size))
return -1;
return 0;
}
int WiFiClient::peek() {
uint8_t b;
if (!available())
return -1;
ServerDrv::getData(_sock, &b, 1);
return b;
}
void WiFiClient::flush() {
// TODO: a real check to ensure transmission has been completed
}
void WiFiClient::stop() {
if (_sock == 255)
return;
ServerDrv::stopClient(_sock);
WiFiClass::_state[_sock] = NA_STATE;
int count = 0;
// wait maximum 5 secs for the connection to close
while (status() != CLOSED && ++count < 50)
delay(100);
_sock = 255;
}
uint8_t WiFiClient::connected() {
if (_sock == 255) {
return 0;
} else {
uint8_t s = status();
return !(s == LISTEN || s == CLOSED || s == FIN_WAIT_1 ||
s == FIN_WAIT_2 || s == TIME_WAIT ||
s == SYN_SENT || s== SYN_RCVD ||
(s == CLOSE_WAIT));
}
}
uint8_t WiFiClient::status() {
if (_sock == 255) {
return CLOSED;
} else {
return ServerDrv::getClientState(_sock);
}
}
WiFiClient::operator bool() {
return _sock != 255;
}
// Private Methods
uint8_t WiFiClient::getFirstSocket()
{
for (int i = 0; i < MAX_SOCK_NUM; i++) {
if (WiFiClass::_state[i] == NA_STATE)
{
return i;
}
}
return SOCK_NOT_AVAIL;
}