TCPClient Read() Fails / Blocks

Troubleshooting
1

Hey Everyone. Got a TCPClient issue. Here’s my code:

#include "application.h"

TCPClient client;
byte server[] = { 192, 168, 0, 8 };

char buff[50];
int row = 0;
    
void setup()
{
  // Make sure your Serial Terminal app is closed before powering your Core
  Serial.begin(9600);
  // Now open your Serial Terminal, and hit any key to continue!
  while(!Serial.available()) SPARK_WLAN_Loop();

  Serial.println("Connecting to local server...");

  if (client.connect(server, 6000))
  {
    Serial.println("Connected. Sending welcome packet");
    
    
    sprintf(buff,"R:%d", row++);
    client.println(buff);
    
  }
  else
  {
    Serial.println("Connection failed");
  }
}

void loop()
{
    if(client)
    {
        Serial.println("New Client");
        while(client.connected())
        {
            int clientAvail = client.available();
            if(clientAvail > 0)
            {
                Serial.print(clientAvail, DEC);
                char c = client.read();
                Serial.println(c);
            }
            if(row < 10)
            {
                sprintf(buff,"R:%d", row++);
                client.println(buff);
            }
            else
            {
                client.print("close");
            }
        }
        
        Serial.println("Disconnecting from server.");
        client.stop();
        for(;;) SPARK_WLAN_Loop();
    }
}

The server listens for a connection, accepts it, and then waits for data. Once it gets data is responds with a “client wants row XXX” where X is the number the SparkCore sends. Somestimes this works great. Othertimes the core gets “hung up” on a client.read(). It’s always when Client.available() returns 1 and usually happens the first time the client attempts to read data from the server. Any ideas? Given the current inconsistency TCPClient is effectively useless to me :frowning: but I know others are using without problems so it must be my code. Help?

Thanks!