💋 😱 👈🏽 Ethernet Library oder warum es in der Natur keine Server auf Arduino gibt 😝 📁 👉🏾

Arduino Mega Server. , Arduino Ethernet Library, Ethernet Shield W5100. , Arduino.

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Arduino

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arduino\libraries\Ethernet

, , EthernetServer.cpp

EthernetClient EthernetServer::available() {
  accept();

  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
    EthernetClient client(sock);
    if (EthernetClass::_server_port[sock] == _port &&
        (client.status() == SnSR::ESTABLISHED ||
         client.status() == SnSR::CLOSE_WAIT)) {
      if (client.available()) {
        // XXX: don't always pick the lowest numbered socket.
        return client;
      }
    }
  }
  return EthernetClient(MAX_SOCK_NUM);
}

( ) Ethernet Library . , . , , , , , .


        // XXX: don't always pick the lowest numbered socket.

Freunde, alles ist im Klartext geschrieben. In einer freien Übersetzung klingt es ungefähr so: "Es funktioniert, aber nicht immer." Moment mal, was bedeutet "nicht immer"? Wir haben keinen Sonntagslotto-Club. Und wenn es nicht funktioniert, was dann? Aber wenn "nicht funktioniert" und Probleme mit einer Verzögerung von zehn Sekunden beginnen.

Und der Autor wusste definitiv davon, wie das Selbstwertgefühl seiner Schöpfung zeigt - drei x. Keine Kommentare. Diese Bibliothek ist die Basis für viele Klone, und diese drei Xs wandern von einem Projekt zum anderen. Wenn Sie Entwickler sind, können Sie dieses Problem nicht nur einmal bemerken, ohne den Netzwerkaustausch zu testen. Auch kein Kommentar.

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EthernetClient EthernetServer::available_(int sock) {
  accept_(sock);
  EthernetClient client(sock);
  if (EthernetClass::_server_port[sock] == _port &&
      (client.status() == SnSR::ESTABLISHED ||
       client.status() == SnSR::CLOSE_WAIT)) {
    if (client.available()) {
      return client;
    }
  }
  return EthernetClient(MAX_SOCK_NUM);
}

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« » accept, .

void EthernetServer::accept_(int sock) {
  int listening = 0;
  EthernetClient client(sock);

  if (EthernetClass::_server_port[sock] == _port) {
    if (client.status() == SnSR::LISTEN) {
      listening = 1;
    } 
    else if (client.status() == SnSR::CLOSE_WAIT && !client.available()) {
      client.stop();
    }
  } 

  if (!listening) {
    //begin();
    begin_(sock); // added
  }
}

EthernetServer.h

class EthernetServer : 
public Server {
private:
  uint16_t _port;
  //void accept();
  void accept_(int sock);
public:
  EthernetServer(uint16_t);
  //EthernetClient available();
  EthernetClient available_(int sock);
  virtual void begin();
  virtual void begin_(int sock);
  virtual size_t write(uint8_t);
  virtual size_t write(const uint8_t *buf, size_t size);
  using Print::write;
};

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3 — 5 , .

EthernetServer.cpp

/*
Mod for Arduino Mega Server project
fix bug delay answer server
*/

#include «w5100.h»
#include «socket.h»
extern «C» {
#include «string.h»
}

#include «Ethernet.h»
#include «EthernetClient.h»
#include «EthernetServer.h»

EthernetServer::EthernetServer(uint16_t port) {
_port = port;
}

void EthernetServer::begin() {
for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (client.status() == SnSR::CLOSED) {
socket(sock, SnMR::TCP, _port, 0);
listen(sock);
EthernetClass::_server_port[sock] = _port;
break;
}
}
}

void EthernetServer::begin_(int sock) {
EthernetClient client(sock);
if (client.status() == SnSR::CLOSED) {
socket(sock, SnMR::TCP, _port, 0);
listen(sock);
EthernetClass::_server_port[sock] = _port;
}
}

/*

void EthernetServer::accept() {
int listening = 0;

for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);

if (EthernetClass::_server_port[sock] == _port) {
if (client.status() == SnSR::LISTEN) {
listening = 1;
}
else if (client.status() == SnSR::CLOSE_WAIT && !client.available()) {
client.stop();
}
}
}

if (!listening) {
begin();
}
}

*/

void EthernetServer::accept_(int sock) {
int listening = 0;
EthernetClient client(sock);

if (EthernetClass::_server_port[sock] == _port) {
if (client.status() == SnSR::LISTEN) {
listening = 1;
}
else if (client.status() == SnSR::CLOSE_WAIT && !client.available()) {
client.stop();
}
}

if (!listening) {
//begin();
begin_(sock); // added
}
}

/*

EthernetClient EthernetServer::available() {
accept();

for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (EthernetClass::_server_port[sock] == _port &&
(client.status() == SnSR::ESTABLISHED ||
client.status() == SnSR::CLOSE_WAIT)) {
if (client.available()) {
// XXX: don't always pick the lowest numbered socket.
return client;
}
}
}
return EthernetClient(MAX_SOCK_NUM);
}

*/

EthernetClient EthernetServer::available_(int sock) {
accept_(sock);
EthernetClient client(sock);
if (EthernetClass::_server_port[sock] == _port &&
(client.status() == SnSR::ESTABLISHED ||
client.status() == SnSR::CLOSE_WAIT)) {
if (client.available()) {
return client;
}
}
return EthernetClient(MAX_SOCK_NUM);
}

size_t EthernetServer::write(uint8_t b) {
return write(&b, 1);
}

size_t EthernetServer::write(const uint8_t *buffer, size_t size) {
size_t n = 0;
//accept();

for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
accept_(sock); // added
EthernetClient client(sock);

if (EthernetClass::_server_port[sock] == _port &&
client.status() == SnSR::ESTABLISHED) {
n += client.write(buffer, size);
}
}
return n;
}

EthernetServer.h

/*
Mod for Arduino Mega Server project
fix bug delay answer server
*/

#ifndef ethernetserver_h
#define ethernetserver_h

#include «Server.h»

class EthernetClient;

class EthernetServer:
public Server {
private:
uint16_t _port;
//void accept();
void accept_(int sock);
public:
EthernetServer(uint16_t);
//EthernetClient available();
EthernetClient available_(int sock);
virtual void begin();
virtual void begin_(int sock);
virtual size_t write(uint8_t);
virtual size_t write(const uint8_t *buf, size_t size);
using Print::write;
};

#endif

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, . , AMS .

  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
    EthernetClient sclient = server.available_(sock);
    serverWorks2(sclient);
  }

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void serverWorks2(EthernetClient sclient) {
...
}

, Arduino Mega Server. . , . , AMS — MajorDoMo.

Arduino Ethernet Library .

. Youtube Arduino Mega Server, .

Ethernet Library oder warum es in der Natur keine Server auf Arduino gibt

Arduino

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