Server response problem!

hi, have problem program. program reads rfid tag next send request server , waits response. if response true, program open door. have problem receiving server response. , have no idea how search in response true.

code: [select]


#include <wiegand.h>
#include <uipethernet.h>
wiegand wg;
int door = 1;
 
byte mac[] = { 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed };
ipaddress ip(192, 168, 1, 179);
byte server[] = { 192, 168, 1, 18 }; // ip serwera
ethernetclient client;
 
void setup() {
    wg.begin();
   
     pinmode(7, output);
     pinmode(8, output);
     pinmode(9, output);
     
     serial.begin(9600);
}
 
void loop() {
  if(wg.available()){
    ethernet.begin(mac, ip);
            unsigned long cardid = wg.getcode(); //kod karty
            serial.print(cardid);
           
            string = gethttpheader(cardid,door); //string z get
            serial.println("connecting...");
           
              if (client.connect(server, 80)) {
                  serial.println("connected");
                  client.println(a);
                  client.println();
                  boolean result = serverrequest();
                    if(result == true){
                         accessgranted();
                    }
                    else{
                         accessdenied();
                    }
              }
              else {
                  serial.println("connection failed");
                  loop();
              }
  }
 
 
}
boolean serverrequest(){  //zosta ta funkcja
 if (client.available()) {
    char c = client.read();
   
   
    serial.print(c);
  }
 
  if (!client.connected()) {
    serial.println();
    serial.println("disconnecting.");
    client.stop();
    for(;;);
  }
}
 
void accessdenied() {  //zamykanie
  delay(100);
  digitalwrite(8, high);
  delay(100);
  digitalwrite(8, low);
  delay(100);
  digitalwrite(8, high);
  delay(100);
  digitalwrite(8, low);
  loop();;
 
}
 
void accessgranted() {  //otwieranie
  digitalwrite(7, high);
  digitalwrite(9, high);
  delay(5000);
  digitalwrite(9, low);
  digitalwrite(7, low);
  loop();
}
 
string gethttpheader(unsigned long cardid, word door) {  //tworzenie zapytania get
 string getbegin = f("get /auth/door.php");
 string getid = f("?id=");
 string getdoor = f("&door=");
 string getend = f(" http/1.1\r\nhost: 10.0.0.22\r\n\r\n");
 return getbegin + getid + cardid + getdoor + door + getend;
}



reciving request server doesn't work. , have no idea how serch true in response.

code: [select]

    ethernet.begin(mac, ip);
this belongs in setup(), not loop(). start communication ethernet shield once!

code: [select]

string getbegin = f("get /auth/door.php");
 string getid = f("?id=");
 string getdoor = f("&door=");
 string getend = f(" http/1.1\r\nhost: 10.0.0.22\r\n\r\n");
nonsense. f() macro can not used way. there no sense trying keep string literals out of sram while simultaneously pissing away resources on string class.

code: [select]

return getbegin + getid + cardid + getdoor + door + getend;
how adding bunch of string instances , long , word (whatever f**k is) supposed work?

quote

reciving request server doesn't work.

almost because haven't gotten valid request server. stop nonsense strings. send pieces 1 @ time server, or use sprintf() construct single statement.

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