fast open close tcp

Projects Programming
1

hello
i want to make rfid reader for scan item in a shopping storage. some time rfid read 10 or more tag in 1 second . i have to use this senario :

1 : scan RFID
2 : Open TCP Socket From Arduino To Server(port 1050 on PC)
3 : Send TAG ID + Some Data to Server
4 : if item expire date is over server response
5 : Close TCP
6 : check telnet server(port 1060 On arduino) on arduino for received some data from PC

i check telnet server and client example but if open/close tcp fast, Ethernet shield will not close port correctly and after 4-5 minute all 4 socket on shied is in open mode and cant open new socket.(open close 20 time in 1-2 second for test)
also check httpclient sample but it is tooo slow . each request take 1000~1300 mili second to open and close. request send fast to server but when i want read response in arduino it take too much time.

what is best solution for me ?
my board : Mega2560
Ethernet Shield : W5100
RFID Reader : RC522
TCP Server on PC Programming language: C#

any example will help me if you have.

2

also check httpclient sample but it is tooo slow . each request take 1000~1300 mili second to open and close. request send fast to server but when i want read response in arduino it take too much time.

Did you check code full of delays...?

3

J-M-L:
Did you check code full of delays...?

i check used time with this method :

 int startTime = millis();
 httpClient.setHttpResponseTimeout(500);
 int err = 0;

 err = httpClient.get(kPath); // Take 20~25 mili
 if (err == 0)
 {
 Serial.println("startedRequest ok");

 err = httpClient.responseStatusCode(); //Take 1100~1250 mili just on time, 
//other read()  dont take much time . if delete this line other read() take 1200~ milis !!

 if (err >= 0)
 {
 Serial.print("Got status code: ");
 Serial.println(err);

 // Usually you'd check that the response code is 200 or a
 // similar "success" code (200-299) before carrying on,
 // but we'll print out whatever response we get

 // If you are interesting in the response headers, you
 // can read them here:
 while(httpClient.headerAvailable())
 {
  String headerName = httpClient.readHeaderName();
  String headerValue = httpClient.readHeaderValue();
  Serial.print(headerName);
  Serial.print(": ");
  Serial.println(headerValue);
 }

 int bodyLen = httpClient.contentLength();
 Serial.print("Content length is: ");
 Serial.println(bodyLen);
 Serial.println();
 Serial.println("Body returned follows:");

 // Now we've got to the body, so we can print it out
 unsigned long timeoutStart = millis();
 char c;
 // Whilst we haven't timed out & haven't reached the end of the body
 while ((httpClient.connected() || httpClient.available()) &&
 (!httpClient.endOfBodyReached()) &&
 ((millis() - timeoutStart) < kNetworkTimeout))
 {
 if (httpClient.available())
 {
 c = httpClient.read();
 // Print out this character
 // Serial.print(c);

 // We read something, reset the timeout counter
 timeoutStart = millis();
 }
 else
 {
 // We haven't got any data, so let's pause to allow some to
 // arrive
 delay(kNetworkDelay);
 }
 }
 }
 else
 {
 Serial.print("Getting response failed: ");
 Serial.println(err);
 }
 }
 else
 {
 Serial.print("Connect failed: ");
 Serial.println(err);
 }

 httpClient.stop();

 int endTime = millis();

 int avgTime= endTime  - startTime;


 Serial.println(avgTime);

if i try to read response it take too much time . when i check with socket, this server will response in 100-150 milis . but socket will down after few minute if i try to open/close socket fast . i check and w5100 all socket all are open when i see connect failed message .