ESP8266 Community Forum

- Fri Aug 28, 2015 2:34 am #27214 Hi,
to me it seems to be in your variable definitions:

Code: Select all  String ServerToConnectTo;
  String PageToGet;
  ServerToConnectTo = URLtoGet.substring(0, URLtoGet.indexOf("/"));
  PageToGet = URLtoGet.substring(URLtoGet.indexOf("/"));
.
.
if (client.connect(ServerToConnectTo , 80))

"client.connect()" needs a "const char* ServerToConnectTo" definition for the host
in the .h there is no definition matching ".connect(string, int)" only ".connect(const char*, int)"

Code: Select all  virtual int connect(IPAddress ip, uint16_t port);
  virtual int connect(const char *host, uint16_t port);


- Fri Aug 28, 2015 9:19 am #27236 The String API allows to convert to "char *" using c_str() :

Code: Select allif (client.connect(ServerToConnectTo.cstr() , 80))


BTW, in the code above, we can see that the URL still have HOST hard-coded to "Host: api.ipify.org", that needs to be modified, and the "?format=json" removed ...

- Fri Aug 28, 2015 6:22 pm #27268 So now the function is just spitting out numbers.

Code: Select allString FetchWebUrl(String URLtoGet)
{
  String str;
  String ServerToConnectTo;
  String PageToGet;
  ServerToConnectTo = URLtoGet.substring(0, URLtoGet.indexOf("/"));
  PageToGet = URLtoGet.substring(URLtoGet.indexOf("/"));

  Serial.println(ServerToConnectTo);
  Serial.println(PageToGet);

  WiFiClient client;
  if (client.connect(ServerToConnectTo.c_str() , 80))
  {
    client.print(String("GET " + PageToGet + " HTTP/1.1\r\nHost: " + ServerToConnectTo + "\r\n\r\n"));
    delay(100);
    str = "";
    while (client.available())
    {
      str += String(client.read());
      delay(0);
    }
    return str;
  }
  return "";
}

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- Fri Aug 28, 2015 7:31 pm #27273 The client.read() is returning a "int", but String class constructor for "int" think that you wish to display numbers.
If you wish to display the character corresponding the this ASCII code, you need to cast it to "const char".

Code: Select allstr += String((const char)client.read());