Hello noble monks, I'm trying to edit http requests on the fly, for that I've got proxy, that intercepts requests, edits them, and then sends them along... This works fine, until you start POSTing things using some binary encoding... then it apears that my messing with those bytes removes '^M' characters and replaces them with unix newlines ie, incoming request looks like this: 
POST /something/fileupload.html^M
HTTP/1.1^M
Accept: image/pjpeg, */*^M
Accept-Language: pl^M
Content-Type: multipart/form-data;
boundary=---------------------------7d42228760176^M
and outgoing looks like this: 
POST /something/fileupload.html
HTTP/1.1
Accept: image/pjpeg, */*
Accept-Language: pl
Content-Type: multipart/form-data;
boundary=---------------------------7d42228760176
After receiving such request webservers hang, waiting for client to finish... entering '^M' anywhere makes them continue. Question is - how to go about this? My code looks roughly like this: 
@indata=split(/^M/,$data);
foreach (@indata) {
$dataout.=$_;
};

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... I also tried this: 
@indata=split(/^M/,$data);
foreach (@indata) {
  push @outdata,$_;
};
$outdata=join(/^M/,@outdata);

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But it seems like the only way to put "^M" character in outgoing string is to 
$outdata.="^MHelloWorld^M";

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Is there some way to make perl use "^M" in newlines? I already tried setting $/="\r\n";$\="\r\n", but that doesen't change this behaviour.

In reply to Web and newlines, aka perl vs ^M by Eyck

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