The VideoLAN Forums

Posted: **08 Apr 2021 00:45**

Here is my extension, I want to get the html index code from www.google.fr :
Everything works fine, but not data retreiving with vlc.net.recv()

Code: Select all


function descriptor()
    return  { title = "Net Test" }
end

function activate()

  -- 1. Variable from webpage to fetch
  host = "www.google.fr"
  port = 80
  path = '/'

  -- 2. connect
  local tcp = vlc.net.connect_tcp(host, port)
  if not tcp then
    vlc.msg.dbg('connexion to '..host..':'..port..' : Fail !')
    return nil
  end
  vlc.msg.dbg('connexion to '..host..':'..port..' : OK !')
  
  
  -- 3. Send GET request
  local http_request = "GET "..path.." HTTP/1.1\r\n"..
  "Host: "..host.."\r\n"..
  "\r\n"
  local count = vlc.net.send(tcp, http_request)
  vlc.msg.dbg('-> http_request sent : '..http_request)
  vlc.msg.dbg('-> '..count..' bytes sent !') -- > 0, it works !
  
  -- => send works, I've tried on my local apache test server, I've got a 200 response ! access.log : "GET / HTTP/1.1" 200 222" 
  
  
  -- 4. Receiving... -_-''
  local buffer = ""
  local chunk = vlc.net.recv(tcp, 1024)
  
  if not chunk then
    vlc.msg.dbg('error -> chunk nil !')
    return nil
  else
    vlc.msg.dbg('error -> chunk OK !')
  end
  
  
  while chunk do
    chunk = vlc.net.recv(tcp, 1024)
    buffer = buffer..chunk
    vlc.msg.dbg('recv !')
    -- it never enters this loop.... since chunk is nil....
  end
  
  
  
  
  return true
end


function deactivate()
  return true
end

And the logfile :

qt debug: activating or triggering extension 'Net Test'
lua debug: Activating extension 'Net Test'
main debug: net: connecting to www.google.fr port 80
main debug: connection succeeded (socket = 1952)
lua debug: connexion to www.google.fr:80 : OK !
lua debug: -> http_request sent : GET / HTTP/1.1 Host: www.google.fr
lua debug: -> 39 bytes sent !
lua debug: error -> chunk nil !

I'm using VLC 3.0.12 x64 on Windows 10 x64.

vlc.net.recv(tcp, 1024) returns nil !

I normaly can't use vlc.net.POLLIN because in the README.TXT :

net.poll( { fd = events } ): Implement poll function.
Returns the numbers of file descriptors with a non 0 revent. The function
modifies the input table to { fd = revents }. See "man poll". This function
is not available on Windows.

How can I do for retrieving the result string ???

Thx !

Posted: **08 Apr 2021 00:54**

OK...... The documentation is not up to date...

vlc.net.poll is available for windows !

I tried

Code: Select all

-- 3. Send GET request
  local http_request = "GET "..path.." HTTP/1.1\r\n"..
  "Host: "..host.."\r\n"..
  "\r\n"
  local count = vlc.net.send(tcp, http_request)
  vlc.msg.dbg('-> http_request sent : '..http_request)
  vlc.msg.dbg('-> '..count..' bytes sent !') -- > 0, it works !
  
  -- => send works, I've tried on my local apache test server, I've got a 200 response ! access.log : "GET / HTTP/1.1" 200 222" 
  local pollfds = {}

  pollfds[tcp] = vlc.net.POLLIN
  vlc.net.poll(pollfds)

=> résult log :

qt debug: activating or triggering extension 'Net Test'
lua debug: Activating extension 'Net Test'
main debug: net: connecting to www.google.fr port 80
main debug: connection succeeded (socket = 1960)
lua debug: connexion to www.google.fr:80 : OK !
lua debug: -> http_request sent : GET / HTTP/1.1 Host: www.google.fr
lua debug: -> 39 bytes sent !
lua debug: error -> chunk OK !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua debug: recv !
lua warning: Error while running script C:\Users\Spark\AppData\Roaming\vlc\lua\extensions\net.lua, function activate(): ...ers\Spark\AppData\Roaming\vlc\lua\extensions\net.lua:52: attempt to concatenate local 'chunk' (a nil value)
lua error: Could not activate extension!
lua debug: Deactivating 'Net Test'

just need to modify some stuffs and il will works perfectly

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vlc.net.recv() not working !!

vlc.net.recv() not working !!

Re: vlc.net.recv() not working !!