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src/EthernetOverride/TCP.cpp

@@ -0,0 +1,48 @@
+#include "TCP.h"
+#include "utility/w5500.h"
+#include "utility/socket.h"
+
+ConnectionStatusSimple EthernetMaketClient::connectNonBlock(IPAddress ip, uint16_t port) {
+ 
+  if (_sock != MAX_SOCK_NUM) {
+    // Serial.println(F("connectNonBlock"));
+    uint8_t status_ = status();
+    switch (status_) {
+      case SnSR::CLOSED:
+        // Serial.println(F("CLOSED"));
+        _sock = MAX_SOCK_NUM;
+        return CONNECT_FAIL;
+        break;
+      case SnSR::ESTABLISHED:
+        // Serial.println(F("ESTABLISHED"));
+        return CONNECT_SUCCESS;
+        break;
+      default:
+        // Serial.print(F("status "));
+        // Serial.println(status_,HEX);
+        return CONNECT_CONNECTING;
+        break;
+    }
+  }
+  for (int i = 0; i < MAX_SOCK_NUM; i++) {
+    uint8_t s = w5500.readSnSR(i);
+    if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT || s == SnSR::CLOSE_WAIT) {
+      _sock = i;
+      break;
+    }
+  }
+
+  if (_sock == MAX_SOCK_NUM)
+    return CONNECT_FAIL;
+
+  _srcport++;
+  if (_srcport == 0) _srcport = 1024;
+  socket(_sock, SnMR::TCP, _srcport, 0);
+
+  if (!::connect(_sock, rawIPAddress(ip), port)) {
+    _sock = MAX_SOCK_NUM;
+    return CONNECT_FAIL;
+  }
+  
+  return CONNECT_CONNECTING;
+}