Hi, I am new to perl, I have requirement that Perl script has to send UDP Packet to other machine where C application receives the PDU. I know how to decode the PDU in C application after receiving from the socket, but not sure how to encode the PDU in perl script, could anybody help me here ? At the sender side(Perl) has to send three unsigned 32 bit numbers followed by one unsinged 16bit number in the PDU, At the receiving end(C application) has the following code snippet n= recvfrom(sd,msg,MAX_MSG,0,(struct sockaddr*)&cliAddr,&cliLen); char* ptr=msg; printf("1st value %d ",ntohl(*(int*)ptr)); ptr=ptr+sizeof(int); printf("2nd value %d",ntohl(*(int*)ptr)); ptr=ptr+sizeof(int); printf("3rd value %d",ntohl(*(int*)ptr)); ptr=ptr+sizeof(int); pritnf("final value %d",ntohs(*(unsigned short)ptr)); How to encode the PDU in perl script sothat the above decode statements correctly receives values. can 'pack' api in perl achieves that ????

In reply to Perl socket programming by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.