send() function returns more bytes that it was required c++

Question

I am doing a socket program and, after my server is connected with the device, I am trying to send a message to him. But the send() function returns a number of bytes greater th

Answer 1

You did not mean sizeof(HEX_bufferMessage). The type of HEX_bufferMessage is [presumably] char*, and the size of a char* is 8 bytes on your [64-bit] system.

Pass the number 7 instead, preferably using a constant, and get rid of that dynamic allocation if the value 7 really is fixed.

const int BUF_SIZE = 7;
char HEX_bufferMessage[BUF_SIZE];

// ...

retorno = send(sckSloMo, &HEX_bufferMessage[0], BUF_SIZE, 0);