mirror of https://github.com/noisymime/Arduino.git
140 lines
2.8 KiB
C++
140 lines
2.8 KiB
C++
#include "w5100.h"
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#include "socket.h"
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extern "C" {
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#include "string.h"
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}
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#include "WProgram.h"
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#include "Ethernet.h"
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#include "Client.h"
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#include "Server.h"
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uint16_t Client::_srcport = 1024;
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Client::Client(uint8_t sock) : _sock(sock) {
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}
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Client::Client(uint8_t *ip, uint16_t port) : _ip(ip), _port(port), _sock(MAX_SOCK_NUM) {
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}
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uint8_t Client::connect() {
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if (_sock != MAX_SOCK_NUM)
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return 0;
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for (int i = 0; i < MAX_SOCK_NUM; i++) {
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uint8_t s = W5100.readSnSR(i);
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if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT) {
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_sock = i;
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break;
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}
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}
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if (_sock == MAX_SOCK_NUM)
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return 0;
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_srcport++;
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if (_srcport == 0) _srcport = 1024;
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socket(_sock, SnMR::TCP, _srcport, 0);
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if (!::connect(_sock, _ip, _port)) {
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_sock = MAX_SOCK_NUM;
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return 0;
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}
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while (status() != SnSR::ESTABLISHED) {
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delay(1);
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if (status() == SnSR::CLOSED) {
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_sock = MAX_SOCK_NUM;
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return 0;
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}
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}
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return 1;
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}
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void Client::write(uint8_t b) {
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if (_sock != MAX_SOCK_NUM)
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send(_sock, &b, 1);
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}
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void Client::write(const char *str) {
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if (_sock != MAX_SOCK_NUM)
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send(_sock, (const uint8_t *)str, strlen(str));
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}
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void Client::write(const uint8_t *buf, size_t size) {
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if (_sock != MAX_SOCK_NUM)
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send(_sock, buf, size);
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}
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int Client::available() {
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if (_sock != MAX_SOCK_NUM)
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return W5100.getRXReceivedSize(_sock);
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return 0;
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}
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int Client::read() {
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uint8_t b;
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if (!available())
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return -1;
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recv(_sock, &b, 1);
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return b;
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}
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void Client::flush() {
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while (available())
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read();
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}
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void Client::stop() {
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if (_sock == MAX_SOCK_NUM)
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return;
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// attempt to close the connection gracefully (send a FIN to other side)
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disconnect(_sock);
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unsigned long start = millis();
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// wait a second for the connection to close
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while (status() != SnSR::CLOSED && millis() - start < 1000)
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delay(1);
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// if it hasn't closed, close it forcefully
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if (status() != SnSR::CLOSED)
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close(_sock);
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EthernetClass::_server_port[_sock] = 0;
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_sock = MAX_SOCK_NUM;
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}
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uint8_t Client::connected() {
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if (_sock == MAX_SOCK_NUM) return 0;
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uint8_t s = status();
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return !(s == SnSR::LISTEN || s == SnSR::CLOSED || s == SnSR::FIN_WAIT ||
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(s == SnSR::CLOSE_WAIT && !available()));
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}
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uint8_t Client::status() {
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if (_sock == MAX_SOCK_NUM) return SnSR::CLOSED;
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return W5100.readSnSR(_sock);
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}
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// the next three functions are a hack so we can compare the client returned
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// by Server::available() to null, or use it as the condition in an
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// if-statement. this lets us stay compatible with the Processing network
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// library.
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uint8_t Client::operator==(int p) {
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return _sock == MAX_SOCK_NUM;
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}
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uint8_t Client::operator!=(int p) {
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return _sock != MAX_SOCK_NUM;
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}
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Client::operator bool() {
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return _sock != MAX_SOCK_NUM;
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}
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