Check if file is exceeding maximum http upload size.

httpupload.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 // TODO:
-// * Check filesize limit before trying to send
 // * Check IQ replies for type='error'
 // * Update Manpages
 
@@ -163,6 +162,15 @@ func httpUpload(client *xmpp.Client, jserver string, filePath string) string {
 	if uploadComponent == "" {
 		log.Fatal("No http upload component found.")
 	}
+	maxFileSize, err := strconv.ParseInt(iqDiscoInfoXML.X[1].Field[1].Value, 10, 64)
+	if err != nil {
+		log.Fatal("Error while checking server maximum http upload file size.")
+	}
+	if fileSize > maxFileSize {
+		log.Fatal("File size " + strconv.FormatInt(fileSize/1024/1024, 10) +
+		" MB is larger than the maximum file size allowed (" +
+		strconv.FormatInt(maxFileSize/1024/1024, 10) + " MB).")
+	}
 
 	// Request http upload slot
 	id = getID()