HTTP header may be damaged - fix, unit test

"HTTP/1.1 100 CONTINUE\r\n"
If the header from a server is splitted between two packets
the first packet contains "HTTP/1.1 100" and the second one
contains " CONTINUE\r\n", one space (0x20) is skipped. After
processing the line looks in this way "HTTP/1.1 100CONTINUE".
QHttpNetworkReplyPrivate::readStatus(QAbstractSocket *socket)
is called twice, if a http header is splitted as above.
The function always removes whitespace from the beginning of a packet,
even if it is the second part of a http header

QHttpNetworkReply returns QNetworkReply::RemoteHostClosedError
due to damaged http header during processing.

Task-number: QTBUG-27161

Backported qtbase/60f4fc8b706db9cbeacd5dc4886a7aa347daafc0

Change-Id: I07ec43641bbb9966285a8a1f57a51fb27d2643d4
Reviewed-by: Shane Kearns <shane.kearns@accenture.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/network/access/qhttpnetworkreply.cpp b/src/network/access/qhttpnetworkreply.cpp
index 03ac2b2beb..759d5ab262 100644
--- a/src/network/access/qhttpnetworkreply.cpp
+++ b/src/network/access/qhttpnetworkreply.cpp
@@ -517,7 +517,7 @@ qint64 QHttpNetworkReplyPrivate::readStatus(QAbstractSocket *socket)
             return -1; // unexpected EOF
         else if (haveRead == 0)
             break; // read more later
-        else if (haveRead == 1 && bytes == 0 && (c == 11 || c == '\n' || c == '\r' || c == ' ' || c == 31))
+        else if (haveRead == 1 && fragment.size() == 0 && (c == 11 || c == '\n' || c == '\r' || c == ' ' || c == 31))
             continue; // Ignore all whitespace that was trailing froma previous request on that socket
 
         bytes++;