ESP32 halts for few seconds in between writing data to client

Projects Programming
1

Hi,
I am using ESP32 Dev Kit V1 as a server and making it write the data received on Serial to client connected to it.
Problem i am facing is that it gets halted for a few seconds in between of writing data to client.
Is this the problem with client.write() function?
I am attaching that part of code in which it is writing to client.

       while(clients[0]->connected())
       { 
        WiFiClient newClient = server.available();
        if (newClient) {
        Serial.println("new client1");
       // Find the first unused space
        for (int i=0 ; i<MAX_CLIENTS ; ++i) {
        if (NULL == clients[i]) {
          clients[0] = new WiFiClient(newClient);
          break;}}}
        if(Serial.available() > 0)
        { 
         serialResponse = Serial.readStringUntil('P');
         char buf[50];
         serialResponse.toCharArray(buf, sizeof(buf));
         if(buf[2] == ',')
         {int i=3;
          int j=0;
          while(buf[i] != ',')
          {
           x[j] = buf[i];
           i++;
           j++; 
          }
          int k = i+1;
          j=0;
         while(buf[k] != ',')
         {
          y[j] = buf [k];
          k++;
          j++;
         }}
         y_val = atof(y);
         if(y_val > 9.3 && id == 1)
         {
          Serial.write("nis");
          delay(100);
          Serial.write(0x20);
          delay(100);
          Serial.write("0x71E5"); 
          delay(1000);
          Serial.write(0x0D);
          Serial.write("C");
          id = 2;
          }
         if(clients[0]->available())
          {
           String inp = clients[0]->readString();
           char stat[4];
           inp.toCharArray(stat, sizeof(stat));
           if(stat[1] == '5')
           clients[0]->stop();
          }
          if(exe){
          if(buf[0] == 'O')
          {clients[0]->println(millis());
           clients[0]->write(x);
           clients[0]->write(" ");
           clients[0]->write('\t');
           clients[0]->write(" ");
           clients[0]->write(y);
           clients[0]->write('\n');
           clients[0]->flush();
           memset(x, 0, sizeof(x));
           memset(y, 0, sizeof(y));
           memset(buf, 0, sizeof(buf));
           }}
           else
           exe = 1; 
           }
          }

Please suggest me how to resolve this.
Regards
Akansha

2

You have 1200ms of delay in the posted code. And this snippet looks quite wrong to me:

for (int i=0 ; i<MAX_CLIENTS ; ++i) {
        if (NULL == clients[i]) {
          clients[0] = new WiFiClient(newClient); //OOOPS!?
          break;}}

Please look at this and please format the code in order to make it readable.

3

Hi,
This is the loop for testing weather there is new client or not and this is only executing when there is new client connection.
Problem i am facing is delay in between data transmission and then transmitting chunks of data.
Is this the problem with client.write() function?
Regards
Akansha