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149 lines
2.7 KiB
C++
149 lines
2.7 KiB
C++
extern "C" {
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#include "types.h"
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#include "w5100.h"
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#include "socket.h"
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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 = 0;
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Client::Client(uint8_t sock) {
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_sock = sock;
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}
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Client::Client(uint8_t *ip, uint16_t port) {
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_ip = ip;
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_port = port;
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_sock = 255;
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}
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uint8_t Client::connect() {
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if (_sock != 255)
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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 = getSn_SR(i);
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if (s == SOCK_CLOSED || s == SOCK_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 == 255)
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return 0;
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_srcport++;
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if (_srcport + 1024 == 0) _srcport = 0;
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socket(_sock, Sn_MR_TCP, _srcport + 1024, 0);
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if (!::connect(_sock, _ip, _port)) {
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_sock = 255;
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return 0;
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}
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while (status() != SOCK_ESTABLISHED) {
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delay(1);
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if (status() == SOCK_CLOSED) {
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_sock = 255;
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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 != 255)
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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 != 255)
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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 != 255)
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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 != 255)
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return getSn_RX_RSR(_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 == 255)
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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() != SOCK_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() != SOCK_CLOSED)
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close(_sock);
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EthernetClass::_server_port[_sock] = 0;
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_sock = 255;
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}
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uint8_t Client::connected() {
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if (_sock == 255) {
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return 0;
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} else {
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uint8_t s = status();
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return !(s == SOCK_LISTEN || s == SOCK_CLOSED || s == SOCK_FIN_WAIT ||
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(s == SOCK_CLOSE_WAIT && !available()));
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}
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}
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uint8_t Client::status() {
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if (_sock == 255) {
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return SOCK_CLOSED;
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} else {
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return getSn_SR(_sock);
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}
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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 == 255;
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}
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uint8_t Client::operator!=(int p) {
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return _sock != 255;
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}
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Client::operator bool() {
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return _sock != 255;
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}
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