--- a/Plugins/DicomWeb/DicomWeb.py	Thu Apr 17 18:38:02 2025 +0200
+++ b/Plugins/DicomWeb/DicomWeb.py	Thu Apr 24 10:57:43 2025 +0200
@@ -41,7 +41,7 @@
         body += bytearray('\r\n', 'ascii')
 
 
-def SendStowRaw(orthanc, uri, dicom):
+def SendStowRaw(orthanc, uri, dicom, partsContentType='application/dicom'):
     # We do not use Python's "email" package, as it uses LF (\n) for line
     # endings instead of CRLF (\r\n) for binary messages, as required by
     # RFC 1341
@@ -54,9 +54,9 @@
 
     if isinstance(dicom, list):
         for i in range(dicom):
-            _AttachPart(body, dicom[i], 'application/dicom', boundary)
+            _AttachPart(body, dicom[i], partsContentType, boundary)
     else:
-        _AttachPart(body, dicom, 'application/dicom', boundary)
+        _AttachPart(body, dicom, partsContentType, boundary)
 
     # Closing boundary
     body += bytearray('--%s--' % boundary, 'ascii')
@@ -72,8 +72,8 @@
     return (response.status, DecodeJson(content))
 
 
-def SendStow(orthanc, uri, dicom):
-    (status, content) = SendStowRaw(orthanc, uri, dicom)
+def SendStow(orthanc, uri, dicom, partsContentType='application/dicom'):
+    (status, content) = SendStowRaw(orthanc, uri, dicom, partsContentType)
     if not (status in [ 200 ]):
         raise Exception('Bad status: %d' % status)
     else:

--- a/Plugins/DicomWeb/Run.py	Thu Apr 17 18:38:02 2025 +0200
+++ b/Plugins/DicomWeb/Run.py	Thu Apr 24 10:57:43 2025 +0200
@@ -189,7 +189,10 @@
         a = SendStow(ORTHANC, args.dicomweb + '/studies', GetDatabasePath('Phenix/IM-0001-0001.dcm'))
         self.assertEqual(1, len(DoGet(ORTHANC, '/instances')))
 
-        self.assertEqual(4, len(a))
+        if IsPluginVersionAtLeast(ORTHANC, "dicom-web", 1, 19, 0):
+            self.assertEqual(3, len(a))  # DICOM_TAG_FAILED_SOP_SEQUENCE has been removed in 1.19
+        else:
+            self.assertEqual(4, len(a))
 
         # Specific character set
         self.assertTrue('00080005' in a)
@@ -198,8 +201,11 @@
         self.assertTrue(a['00081190']['Value'][0].endswith('studies/2.16.840.1.113669.632.20.1211.10000098591'))
         self.assertEqual('UR', a['00081190']['vr'])
         
-        self.assertFalse('Value' in a['00081198'])  # No error => empty sequence
-        self.assertEqual('SQ', a['00081198']['vr'])
+        if IsPluginVersionAtLeast(ORTHANC, "dicom-web", 1, 19, 0):
+            self.assertNotIn('00081198', a)  # No errors => the DICOM_TAG_FAILED_SOP_SEQUENCE shall not be present
+        else:
+            self.assertFalse('Value' in a['00081198'])  # No error => empty sequence
+            self.assertEqual('SQ', a['00081198']['vr'])
 
         self.assertEqual(1, len(a['00081199']['Value']))  # 1 success
         self.assertEqual('SQ', a['00081199']['vr'])
@@ -236,6 +242,16 @@
         self.assertEqual(1, len(parts))
         self.assertEqual(os.path.getsize(GetDatabasePath('Phenix/IM-0001-0001.dcm')), int(parts[0]))
 
+    def test_stow_like_dcm4chee(self):
+        # https://discourse.orthanc-server.org/t/orthanc-dicomweb-stowrs-server-request-response-compatibility/5763
+
+        self.assertEqual(0, len(DoGet(ORTHANC, '/instances')))
+        a = SendStow(ORTHANC, args.dicomweb + '/studies', GetDatabasePath('Phenix/IM-0001-0001.dcm'), 'application/dicom;transfer-syntax=1.2.840.10008.1.2.1')
+        self.assertEqual(1, len(DoGet(ORTHANC, '/instances')))
+
+        self.assertNotIn('00081198', a)  # No errors => the DICOM_TAG_FAILED_SOP_SEQUENCE shall not be present
+
+
         
     def test_server_get(self):
         try:
@@ -708,19 +724,24 @@
 
         
     def test_stow_errors(self):
-        def CheckSequences(a):
-            self.assertEqual(3, len(a))
+        def CheckSequences(a, expectFailedSopSequence):
+            if IsPluginVersionAtLeast(ORTHANC, "dicom-web", 1, 19, 0) and not expectFailedSopSequence:
+                self.assertEqual(2, len(a))
+                self.assertNotIn('00081198', a)
+            else:
+                self.assertEqual(3, len(a))
+                self.assertTrue('00081198' in a)
+                self.assertEqual('SQ', a['00081198']['vr'])
+
             self.assertTrue('00080005' in a)
-            self.assertTrue('00081198' in a)
             self.assertTrue('00081199' in a)
             self.assertEqual('CS', a['00080005']['vr'])
-            self.assertEqual('SQ', a['00081198']['vr'])
             self.assertEqual('SQ', a['00081199']['vr'])
         
         # Pushing an instance to a study that is not its parent
         (status, a) = SendStowRaw(ORTHANC, args.dicomweb + '/studies/nope', GetDatabasePath('Phenix/IM-0001-0001.dcm'))
         self.assertEqual(409, status)
-        CheckSequences(a)
+        CheckSequences(a, True)
 
         self.assertFalse('Value' in a['00081199'])  # No success instance
         
@@ -735,23 +756,21 @@
         # Pushing an instance with missing tags
         (status, a) = SendStowRaw(ORTHANC, args.dicomweb + '/studies', GetDatabasePath('Issue111.dcm'))
         self.assertEqual(400, status)
-        CheckSequences(a)
+        CheckSequences(a, False) # No failed instance, as tags are missing
 
-        self.assertFalse('Value' in a['00081198'])  # No failed instance, as tags are missing
         self.assertFalse('Value' in a['00081199'])  # No success instance
 
         # Pushing a file that is not in the DICOM format
         (status, a) = SendStowRaw(ORTHANC, args.dicomweb + '/studies', GetDatabasePath('Issue111.dump'))
         self.assertEqual(400, status)
-        CheckSequences(a)
+        CheckSequences(a, False) # No failed instance, as non-DICOM
 
-        self.assertFalse('Value' in a['00081198'])  # No failed instance, as non-DICOM
         self.assertFalse('Value' in a['00081199'])  # No success instance
 
         # Pushing a DICOM instance with only SOP class and instance UID
         (status, a) = SendStowRaw(ORTHANC, args.dicomweb + '/studies', GetDatabasePath('Issue196.dcm'))
         self.assertEqual(400, status)
-        CheckSequences(a)
+        CheckSequences(a, True)
 
         self.assertFalse('Value' in a['00081199'])  # No success instance