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{{mirc title|/sockread Command}}
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{{mirc title|/sockread Command}}{{mIRC Guide}}
 
The '''/sockread''' command reads bytes from the receive buffer of a socket connection into a specified variable. This command must be and is to be used inside socket events.
 
The '''/sockread''' command reads bytes from the receive buffer of a socket connection into a specified variable. This command must be and is to be used inside socket events.
  
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== Switches ==
 
== Switches ==
{| class="wikitable" style="line-height: 25px;"
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{| class="wikitable" style="line-height: 25px; margin-left: 75px;"
 
|-
 
|-
 
! Switch !! Description
 
! Switch !! Description
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== Parameters ==
 
== Parameters ==
{| class="wikitable" style="line-height: 25px;"
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{| class="wikitable" style="line-height: 25px; margin-left: 75px;"
 
|-
 
|-
 
! Parameter !! Description
 
! Parameter !! Description
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     b) you were reading into a %var and there is still a terminated line in the buffer waiting to be read.  
 
     b) you were reading into a %var and there is still a terminated line in the buffer waiting to be read.  
  
This means you will miss the last line if it is not a terminated line and you are reading line by line only (and not in a binvar, although it's also easier to use on sockclose with binvar if you are reading line by line and facing this). You can read that line in the on sockclose event, {{mIRC|/sockread#Last line not showing up|see below}}.
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This means you will miss the last line if it is not a terminated line and you are reading line by line only. You can read that line in the on sockclose event, see below.
  
 
'''Note''' (fixed since mIRC 7.36): Using SSL, on sockread might not be retriggered as it should, {{mIRC|on events/on sockclose|on sockclose}} will be triggered too early with $sockerr sets to 3, you must read the receive buffer from that event
 
'''Note''' (fixed since mIRC 7.36): Using SSL, on sockread might not be retriggered as it should, {{mIRC|on events/on sockclose|on sockclose}} will be triggered too early with $sockerr sets to 3, you must read the receive buffer from that event
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}</source>
 
}</source>
  
And that, assuming what you are looking for is not on the last non terminated line (which would be missed because -f is not there, although note that you can read that last non terminated line inside the {{mIRC|on sockclose}} event), should be fine. In fact, in this specific example and in general, it will work, because you are making sure %a is a full line or nothing. Well that's why it works in most situation, you are checking that %a is a specific text, which would fail if no byte were read into %a because a terminated line couldn't be found. However, if you are in a situation where you must check that %a is $null (usually because it read an empty $crlf line), you must check {{mIRC|$sockbr}} to know if you read bytes at all, a good example of this usage is shown below, which discard the headers of HTTP (check for an empty value after /Sockread %a reads an empty $crlf line):
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And that, assuming what you are looking for is not on the last non terminated line (which would be missed because -f is not there), this should be fine. In fact, in this specific example and in general, it will work, because you are making sure %a is a full line or nothing. Well that's why it works in most situation, you are checking that %a is a specific text, which would fail if no byte were read into %a because a terminated line couldn't be found. However, if you are in a situation where you must check that %a is $null (usually because it read an empty $crlf line), you must check {{mIRC|$sockbr}} to know if you read bytes at all, a good example of this usage is shown below, which discard the headers of HTTP (check for an empty value after /Sockread %a reads an empty $crlf line):
  
 
<source lang="mIRC">
 
<source lang="mIRC">
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</source>
 
</source>
  
If you are using HTTP 1.1 and you actually want the socket to remain open, you would need to grab the value of the content-length header, store that in a variable and increase another variable with the length of what you are reading, if the length of the received buffer + the value of that variable equal the value of the content length, you should first try to see if you have a line by reading with /sockread %a, and if no byte is read, then use /sockread -f %a.
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If you are using HTTP 1.1 and you actually want the socket to remain open, you would need to grab the value of the content-length header, store that in a variable and increase another variable with the length of what you are reading, if the length of the received buffer + the value of that variable equal the value of the content length, you should first try to see if you have a line by reading with /sockread %a, and if no byte is read, then use /sockread %a.
  
 
== Example ==
 
== Example ==
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'''Note2''': too long line will produce an error.
 
'''Note2''': too long line will produce an error.
  
'''Note3''': Using SSL, the on sockread event might not be triggered though it should, you must read the rest in the on sockclose event (has been fixed since mIRC 7.36).
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'''Note3''': Using SSL, the sockread might not be triggered though there are still datas to be read, you must read the rest in the on sockclose event.
  
 
<source lang="mIRC">ON *:SOCKREAD:mySocket:{
 
<source lang="mIRC">ON *:SOCKREAD:mySocket:{
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       else {
 
       else {
 
         var %a
 
         var %a
         sockread %a
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         ;skip empty line
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         ;when we start, the next line is the chunk size, but after reading a chunk, we must parse the $crlf ending that chunk
         while ($sockbr) && (%a == $null) { sockread %a }
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         ;so if we read and %a is $null, it means we are after the start, we try to read the next line, if we can't find the next chunk in the current receive buffer, we return and allow the event to retrigger with more data.
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        sockread -f %a
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         while ($sockbr) && (%a == $null) { sockread -f %a }
 
         if (!$sockbr) || (%a == $null) return
 
         if (!$sockbr) || (%a == $null) return
 
         ;last chunk
 
         ;last chunk

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