Http Posting using QNetworkAccessManager

[ChrisW67]

Yes it is. Your code with only the web server and file path changed, the submit button encoded, and the close() call removed:

from PyQt4 import QtCore, QtGui, QtNetwork
import sys
class Window(QtGui.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)
 
        self.netaccess = QtNetwork.QNetworkAccessManager(self)
        self._uploaders = {}
        row = 1 #this number will change per upload in real program,this is just demo
        self.address = 'http://dev/demo.php'
        stream = QtCore.QFile('icon.png')
        if stream.open(QtCore.QIODevice.ReadOnly):
            data = stream
 
            uploader = self._uploaders[row] = Uploader(row, self.netaccess)
 
            uploader.upload(data, self.address)
 
class Uploader(QtCore.QObject):
 
    def __init__(self, key, parent):
        QtCore.QObject.__init__(self, parent)
        self._key = key
        self._reply = None
 
 
    def upload(self, data, url):
        if self._reply is None:
 
            self._stream = data
 
            self._multiPart = QtNetwork.QHttpMultiPart(QtNetwork.QHttpMultiPart.FormDataType)
 
            fileName = QtCore.QFileInfo(self._stream.fileName()).fileName()
            key = 'file'
 
            imagePart = QtNetwork.QHttpPart()
            imagePart.setHeader(QtNetwork.QNetworkRequest.ContentDispositionHeader,
                     "form-data; name=\"%s\"; filename=\"%s\"" % (key, fileName))
            imagePart.setHeader(QtNetwork.QNetworkRequest.ContentTypeHeader,
                     'image/png')
            imagePart.setBodyDevice(self._stream)
 
            submitPart = QtNetwork.QHttpPart()
            submitPart.setHeader(QtNetwork.QNetworkRequest.ContentDispositionHeader,
            "form-data; name=\"submit\"")
            submitPart.setBody("submit")
 
            self._multiPart.append(imagePart)
            self._multiPart.append(submitPart)
 
            request = QtNetwork.QNetworkRequest(QtCore.QUrl(url))
            request.setHeader(QtNetwork.QNetworkRequest.ContentTypeHeader,
  'multipart/form-data; boundary=%s' % self._multiPart.boundary())
            request.setRawHeader('User-Agent','Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36')
 
            self._reply = self.parent().post(request, self._multiPart)
            self._reply.uploadProgress.connect(self.handleUploadProgress)
            self._reply.error.connect(self.handleError)
            self._reply.finished.connect(self.handleFinished)
 
 
 
    def handleUploadProgress(self, sent, total):
        print sent, total
 
    def handleFinished(self):
        print('Content: ',self._reply.readAll())#no output here :(
        self._stream.close()
        self._multiPart.deleteLater()
        self._reply.deleteLater()
        self._reply = None
        app.quit()
 
    def handleError(self):
        print('Error String :',self._reply.errorString())
        print('Error number: ',self._reply.error())
 
 
app = QtGui.QApplication(sys.argv)
demo = Window()
sys.exit(app.exec_())

from PyQt4 import QtCore, QtGui, QtNetwork
import sys
class Window(QtGui.QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)
        
        self.netaccess = QtNetwork.QNetworkAccessManager(self)
        self._uploaders = {}
        row = 1 #this number will change per upload in real program,this is just demo
        self.address = 'http://dev/demo.php'
        stream = QtCore.QFile('icon.png')
        if stream.open(QtCore.QIODevice.ReadOnly):
            data = stream
        
            uploader = self._uploaders[row] = Uploader(row, self.netaccess)
        
            uploader.upload(data, self.address)

class Uploader(QtCore.QObject):

    def __init__(self, key, parent):
        QtCore.QObject.__init__(self, parent)
        self._key = key
        self._reply = None


    def upload(self, data, url):
        if self._reply is None:

            self._stream = data

            self._multiPart = QtNetwork.QHttpMultiPart(QtNetwork.QHttpMultiPart.FormDataType)

            fileName = QtCore.QFileInfo(self._stream.fileName()).fileName()
            key = 'file'

            imagePart = QtNetwork.QHttpPart()
            imagePart.setHeader(QtNetwork.QNetworkRequest.ContentDispositionHeader,
                     "form-data; name=\"%s\"; filename=\"%s\"" % (key, fileName))
            imagePart.setHeader(QtNetwork.QNetworkRequest.ContentTypeHeader,
                     'image/png')
            imagePart.setBodyDevice(self._stream)

            submitPart = QtNetwork.QHttpPart()
            submitPart.setHeader(QtNetwork.QNetworkRequest.ContentDispositionHeader,
            "form-data; name=\"submit\"")
            submitPart.setBody("submit")

            self._multiPart.append(imagePart)
            self._multiPart.append(submitPart)

            request = QtNetwork.QNetworkRequest(QtCore.QUrl(url))
            request.setHeader(QtNetwork.QNetworkRequest.ContentTypeHeader,
  'multipart/form-data; boundary=%s' % self._multiPart.boundary())
            request.setRawHeader('User-Agent','Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36')

            self._reply = self.parent().post(request, self._multiPart)
            self._reply.uploadProgress.connect(self.handleUploadProgress)
            self._reply.error.connect(self.handleError)
            self._reply.finished.connect(self.handleFinished)



    def handleUploadProgress(self, sent, total):
        print sent, total

    def handleFinished(self):
        print('Content: ',self._reply.readAll())#no output here :(
        self._stream.close()
        self._multiPart.deleteLater()
        self._reply.deleteLater()
        self._reply = None
        app.quit()

    def handleError(self):
        print('Error String :',self._reply.errorString())
        print('Error number: ',self._reply.error())


app = QtGui.QApplication(sys.argv)
demo = Window()
sys.exit(app.exec_())

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Using this simple PHP file upload receiver:

$ cat demo.php
<html>
    <body>
        <form method="post" enctype="multipart/form-data">
            <label for="file">Filename:</label>
            <input type="file" name="file" id="file" />
            <br />
            <input type="submit" name="submit" value="Submit" />
        </form>
        <p>
            <?php
            if(isset($_POST['submit'])) {
                if ($_FILES["file"]["error"] > 0) {
                    echo "Error: " . $_FILES["file"]["error"] . "<br />";
                } else {
                    echo "Upload: " . $_FILES["file"]["name"] . "<br />";
                    echo "Type: " . $_FILES["file"]["type"] . "<br />";
                    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
                    echo "Stored in: " . $_FILES["file"]["tmp_name"];
                }
            }
            ?>
        </p>
    </body>
</html>

$ cat demo.php
<html>
    <body>
        <form method="post" enctype="multipart/form-data">
            <label for="file">Filename:</label>
            <input type="file" name="file" id="file" />
            <br />
            <input type="submit" name="submit" value="Submit" />
        </form>
        <p>
            <?php
            if(isset($_POST['submit'])) {
                if ($_FILES["file"]["error"] > 0) {
                    echo "Error: " . $_FILES["file"]["error"] . "<br />";
                } else {
                    echo "Upload: " . $_FILES["file"]["name"] . "<br />";
                    echo "Type: " . $_FILES["file"]["type"] . "<br />";
                    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
                    echo "Stored in: " . $_FILES["file"]["tmp_name"];
                }
            }
            ?>
        </p>
    </body>
</html>

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Gives this output with an artificially large icon.png:

16384 530779
32768 530779
...
524288 530779
530779 530779
('Content: ', PyQt4.QtCore.QByteArray('<html>\n    <body>\n        <form method="post" enctype="multipart/form-data">\n            <label for="file">Filename:</label>\n            <input type="file" name="file" id="file" /> \n            <br />\n            <input type="submit" name="submit" value="Submit" />\n        </form>\n        <p>\n            Upload: icon.png<br />Type: image/png<br />Size: 517.9921875 Kb<br />Stored in: /tmp/phpKg8FG7        </p>\n    </body>\n</html>\n'))

16384 530779
32768 530779
...
524288 530779
530779 530779
('Content: ', PyQt4.QtCore.QByteArray('<html>\n    <body>\n        <form method="post" enctype="multipart/form-data">\n            <label for="file">Filename:</label>\n            <input type="file" name="file" id="file" /> \n            <br />\n            <input type="submit" name="submit" value="Submit" />\n        </form>\n        <p>\n            Upload: icon.png<br />Type: image/png<br />Size: 517.9921875 Kb<br />Stored in: /tmp/phpKg8FG7        </p>\n    </body>\n</html>\n'))

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