Re: (INDY) UDP binding and broadcast

Article View: borland.public.cppbuilder.internet.socket

Article #333

Back to borland.public.cppbuilder.internet.socket Previous Next

#333

From: Bob Gonder
Date: Tue, 15 Apr 2008 19:16

16 lines
1821 bytes

johnG wrote:

>>The Broadcast() method broadcasts to "255.255.255.255" by >default, which sends to all available subnets.
>
>Does it broadcast to all subnets accessible by a specific (physical network) network adapter, or all subnets across all adapters? Meaning that binding does not apply when calling broadcast()?

Broadcast is...broad...it goes to all nodes that meet the mask.
AFAIK it has no concept of network adapters.

Look again at Remy's last post..
        // 10.90.80.255 = broadcast address of the "10.90.80.xxx" subnet
If all of your adapters are in the 10.90.80.x range, they will all broadcast.
If one of your adapters is, say 10.90.81.x, it won't broadcast.

There is a discussion of this (it's .Net, but still applies) here:
http://msdn2.microsoft.com/en-us/library/tst0kwb1(vs.71).aspx

Technical Details

Message-ID: <54v904pjrp2jrvqic1kv3ojm6aqpub5ljd@4ax.com>

Path:

arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!news.glorb.com!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

References: <4804bc99@newsgroups.borland.com> <4804dc70$1@newsgroups.borland.com> <4804eb76$1@newsgroups.borland.com>

Show Full Headers

Complete Article Headers

X-Google-Thread: 11508e,7b3ef48fe39eea8e
X-Google-Attributes: gid11508e,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.internet.socket
Subject: Re: (INDY) UDP binding and broadcast
Date: Tue, 15 Apr 2008 12:16:38 -0700
Organization: MindSpring Enterprises, Inc.
Reply-To: notbg@notmindspring.invalid
Message-ID: <54v904pjrp2jrvqic1kv3ojm6aqpub5ljd@4ax.com>
References: <4804bc99@newsgroups.borland.com> <4804dc70$1@newsgroups.borland.com> <4804eb76$1@newsgroups.borland.com>
X-Newsreader: Forte Agent 1.93/32.576 English (American)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
NNTP-Posting-Host: 67.77.144.72
X-Trace: newsgroups.borland.com 1208286996 67.77.144.72 (15 Apr 2008 12:16:36 -0700)
Lines: 18
Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!news.glorb.com!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

Reply to Parent Message