Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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5.12.1
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None
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windows7 x86_64
msys2 mingw-w64-i686-qt5-static- 5.12.1
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Windows
Description
Conditions:
1. QNetworkRequest setRawHeader("Connection", "close")
2. QNetworkAccessManager post
Example:
// golang http server package main import ( "net/http" ) func IndexHandler(w http.ResponseWriter, r *http.Request) { w.Write([]byte("<html><body>test</body></html>")) } func main() { http.HandleFunc("/test", IndexHandler) http.ListenAndServe("127.0.0.1:8080", nil) }
// qt QByteArray payload; payload.append("test"); auto url = QUrl{"http://127.0.0.1:8080/test"}; QNetworkRequest req(url); req.setRawHeader("Content-Type", "application/octet-stream"); req.setRawHeader("Connection", "keep-alive"); QNetworkAccessManager http; auto reply = http.post(req, payload); QTimer timer; timer.setInterval(30000); timer.setSingleShot(true); QEventLoop loop; connect(reply, SIGNAL(finished()), &loop, SLOT(quit())); connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit())); timer.start(); loop.exec(); timer.stop(); if (reply->isRunning()) { qDebug("timeout"); reply->abort(); delete reply; return; } auto err = reply->error();//RemoteHostClosedError mostly auto html = reply->readAll(); delete reply;
Most of the time you will get RemoteHostClosedError
if replace
req.setRawHeader("Connection", "close")
with
req.setRawHeader("Connection", "keep-alive")
then everything goes well.
curl -X POST -v -H "Connection: close" -H "Content-Type: application/octet-stream" --data-binary test http://127.0.0.1:8080/test // everything's fine with curl every time // if it's http server's problem, then why curl working just fine every time ?
Obviously, QNetworkAccessManager disconnect before QNetworkReply could fetch response data.
