tcpsockbuf & csdbg::tcpsockbuf::set_option ( i32  nm, const void *  val, u32  sz  )

virtual

Set a socket option (applies only for the SOL_SOCKET ioctl level)

Parameters

[in]	nm	the option name
[in]	val	the new option value
[in]	sz	the sizeof val

Returns

*this

Exceptions

csdbg::exception

Attention

This method flushes the current buffer

Definition at line 265 of file tcpsockbuf.cpp.

References __D_ASSERT, flush(), csdbg::streambuf::m_handle, and unlikely.

{
  __D_ASSERT(val != NULL);
  __D_ASSERT(sz > 0);
  if ( unlikely(val == NULL || sz == 0) )
    return *this;

  /* Flush the buffer to avoid data loss or data corruption */
  flush();

  i32 retval = setsockopt(m_handle, SOL_SOCKET, nm, val, sz);
  if ( unlikely(retval < 0) )
    throw exception(
      "failed to set socket option %d (errno %d - %s)",
      nm,
      errno,
      strerror(errno)
    );

  return *this;
}

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