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POpycurl/curl not following the CURLOPT_TIMEOUT option
 

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  1. POpycurl/curl not following the CURLOPT_TIMEOUT option
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    <p>I have a multi-threaded script which occasionally freezes when it connects to a server but the server doesn't send anything back. Netstat shows a connected tcp socket. This happens even if I have TIMEOUT set. The timeout works fine in an unthreaded script. Here's some sample code.</p> <pre><code>def xmlscraper(url): htmlpage = StringIO.StringIO() rheader = StringIO.StringIO() c = pycurl.Curl() c.setopt(pycurl.USERAGENT, "user agent string") c.setopt(pycurl.CONNECTTIMEOUT, 60) c.setopt(pycurl.TIMEOUT, 120) c.setopt(pycurl.FOLLOWLOCATION, 1) c.setopt(pycurl.WRITEFUNCTION, htmlpage.write) c.setopt(pycurl.HEADERFUNCTION, rheader.write) c.setopt(pycurl.HTTPHEADER, ['Expect:']) c.setopt(pycurl.NOSIGNAL, 1) c.setopt(pycurl.URL, url) c.setopt(pycurl.HTTPGET, 1) pycurl.global_init(pycurl.GLOBAL_ALL) for url in urllist: t = threading.Thread(target=xmlscraper, args=(url,)) t.start() </code></pre> <p>Any help would be greatly appreciated! been trying to solve this for a few weeks now.</p> <p>edit: The urllist has about 10 urls. It doesn't seem to matter how many there are. </p> <p>edit2: I just tested this code out below. I used a php script that sleeps for 100 seconds. </p> <pre><code>import threading import pycurl def testf(): c = pycurl.Curl() c.setopt(pycurl.CONNECTTIMEOUT, 3) c.setopt(pycurl.TIMEOUT, 6) c.setopt(pycurl.NOSIGNAL, 1) c.setopt(pycurl.URL, 'http://xxx.xxx.xxx.xxx/test.php') c.setopt(pycurl.HTTPGET, 1) c.perform() t = threading.Thread(target=testf) t.start() t.join() </code></pre> <p>Pycurl in that code seems to timeout properly. So I guess it has something to do with the number of urls? GIL?</p> <p>edit3: </p> <p>I think it might have to do with libcurl itself cause sometimes when I check the script libcurl is still connected to a server for hours on end. If pycurl was properly timing out then the socket would have been closed.</p>
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    1. COhow many urls are in urllist when this problem occurs? does it still happen with only a single (or few) urls/threads?
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    2. COif you start multiple threads using your 'edit2' code, do they each timeout properly?
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    3. COyeah they work fine. Tried it out with a couple hundred spawned threads and all timed out properly.
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