sockets - read ()

• Read from a file descriptor
• blocking function. returns only when there are bytes to read
• It is not an error for the return value to be less than count

  /*
   * READ ( )    
   *
   * RETURN
   * ======
   * # bytes read
   * 0 = EOF (socket closed by peer)
   */
  #include <unistd.h>
  
  ssize_t read (int fd,             // in:  file descriptor to read from
                void* buf,          // out: buffer to write to
                size_t count);      // in:  max # of bytes to read
  

readn( )

readline( )