(Solved)-Reading SD-Card data through TCP (Ethernet Shield + SD-Card)

Nothing in that snippet has anything to do with receiving anything. As I pointed out in your other thread, a char array and strcmp() are needed.

Sorry for my Stupid question, but when I try to use the array, I receive the message: "invalid conversion from 'char*' to 'uint8_t*'"

I have declared

char rec[10];

and I receive the error message on this line:

while (client.connected()) {
      if (client.available()) {       
        
        int charCount = client.read(rec,9);
...
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