encode uri before send

.github/workflows/ant.yml

@@ -0,0 +1,33 @@
+# This workflow will build a Java project with ant
+
+name: Java CI with ant
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Build with ant
+      run: ANT_OPTS="-Dfile.encoding=UTF-8" ant
+    - name: Archive artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: dist-jar-zip-deb-exe-war
+        path: |
+          dist/*.jar
+          dist/*.zip
+          dist/*.deb
+          dist/*.exe
+          dist/*.war

src/java/davmail/exchange/auth/ExchangeFormAuthenticator.java

@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.net.ConnectException;
 import java.net.UnknownHostException;
+import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -219,8 +220,9 @@ public void authenticate() throws DavMailException {
             if (isHttpAuthentication && !DavGatewayHttpClientFacade.hasNTLMorNegotiate(httpClient)) {
                 httpClient.getParams().setParameter(HttpClientParams.PREEMPTIVE_AUTHENTICATION, true);
             }
-
-            exchangeUri = java.net.URI.create(method.getURI().getURI());
+            String uri = method.getURI().getURI();
+            String encodedUri = URLEncoder.encode(uri, StandardCharsets.UTF_8.toString());
+            exchangeUri = java.net.URI.create(encodedUri);
             method.releaseConnection();
 
         } catch (DavMailAuthenticationException exc) {