Hi all,

The function StrToHostAddr in unit sockets returns for '127.0.0.1' on a little endian system the in_addr:
s_bytes[1]=1
s_bytes[2]=0
s_bytes[3]=0
s_bytes[4]=127

Is this correct?

The documentation for HostAddrToStr writes "Basically, it is the same as NetAddrToStr, but with the bytes in correct order.": http://lazarus-ccr.sourceforge.net/docs/rtl/sockets/hostaddrtostr.html This sounds as if a Net and a Host uses different ordered bytes, which makes the whole point of an "and" mask pointless.

Mattias

Mattias Gaertner wrote

This sounds as if a Net and a Host uses different ordered bytes, which makes the whole point of an "and" mask pointless.

Network order is always big endian. Host endian is just the endian of your host computer. So in most cases they are indeed different

I don't know what you mean about and mask

Ah, I confused Network format with Network mask (netmask).

Ok, so StrToHostAddr('1.2.3.4') returns the in_addr in machine order.

I wonder why TSocketStream.RemoteAddress.in_addr is in network order.

I don't know what you mean about and mask

I thought the Host and Net stand for the host and net(-mask) part of a subnet e.g. 1.2.3.4/255.255.255.0.

Mattias