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Re: How to ingest data from an ethernet port? (fwd)


===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
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---------- Forwarded message ----------
Date: Wed, 27 Sep 2000 17:31:58 -0400
From: address@hidden
To: Kevin Tyle <address@hidden>
Subject: Re: How to ingest data from an ethernet port?

Kevin,

LDM can read from a port, at least TCP anyway. I am feeding LDM from a
noaaport system using a port. Specify pqing -P 5001 or
whatever port you are reading in on. Here is my pqing line:

exec    "pqing -5 -f WMO -v -l /weather/ldm/logs/pqing.log -P 5004
162.113.108.72"


The -5 prevents the MD5 checksum from using the sequence number, which is
good because sequence numbers are no longer used with
NOAAPORT transmissions.  Make sure you are using the latest ldm (5.1.2),
since the earlier versions would segmentation fault when specified
with the -P command line parameter.

Good luck!

Mike


                                                                                
                                             
                    Kevin Tyle                                                  
                                             
                    <address@hidden>              To:     address@hidden        
                                 
                    Sent by:                      cc:                           
                                             
                    owner-ldm-users@unidat        bcc:                          
                                             
                    a.ucar.edu                    Subject:     How to ingest 
data from an ethernet port?                     
                                                                                
                                             
                                                                                
                                             
                    09/27/2000 04:43 PM                                         
                                             
                                                                                
                                             
                                                                                
                                             




As the sun sets on Alden, we have signed on with
Gyncorp (formerly GTE) as our data provider.  Their receiver
sends data through an Ethernet port which can then be read
on the receiving computer.  I haven't looked too closely at the
sample program they provide to read in the data, but it appears
to be UDP packets on port 9042.

Question is, how can I ingest this data into the LDM queue?
pqing can read from a file or a tty, but I don't see any way
how it can read from an ethernet-based feed.

Can anyone out there help me out on this?  Thanks!

--Kevin Tyle <address@hidden>
MESO, Inc.
Troy, NY