read base path and create var to be used on templates for dotnet generators.

Author: HugoMario

src/main/java/io/swagger/codegen/v3/generators/dotnet/AbstractCSharpCodegen.java

@@ -15,6 +15,7 @@
 import io.swagger.codegen.v3.generators.handlebars.lambda.TitlecaseLambda;
 import io.swagger.codegen.v3.generators.handlebars.lambda.UppercaseLambda;
 import io.swagger.codegen.v3.utils.ModelUtils;
+import io.swagger.codegen.v3.utils.URLPathUtil;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.PathItem;
@@ -33,6 +34,7 @@
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
+import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -959,6 +961,18 @@ public void setPreserveNewLines(boolean preserveNewLines) {
     @Override
     public void preprocessOpenAPI(OpenAPI openAPI) {
         super.preprocessOpenAPI(openAPI);
+
+        final URL urlInfo = URLPathUtil.getServerURL(openAPI);
+        if ( urlInfo != null && urlInfo.getPort() > 0) {
+            additionalProperties.put("serverUrl", String.format("%s://%s:%s", urlInfo.getProtocol(), urlInfo.getHost(), urlInfo.getPort()));
+
+            if (StringUtils.isNotBlank(urlInfo.getPath())) {
+                additionalProperties.put("basePathWithoutHost", urlInfo.getPath());
+            }
+        } else {
+            additionalProperties.put("serverUrl", URLPathUtil.LOCAL_HOST);
+        }
+
         if (this.preserveNewLines) {
             Map<String, Schema> schemaMap = openAPI.getComponents() != null ? openAPI.getComponents().getSchemas() : null;
             if (schemaMap != null) {
@@ -1056,4 +1070,4 @@ public void postProcessParameter(CodegenParameter parameter) {
     }
 */
 
-}
+}

src/main/java/io/swagger/codegen/v3/generators/dotnet/AspNetCoreServerCodegen.java

@@ -124,18 +124,6 @@ public String getHelp() {
         return "Generates an ASP.NET Core Web API server.";
     }
 
-    @Override
-    public void preprocessOpenAPI(OpenAPI openAPI) {
-        super.preprocessOpenAPI(openAPI);
-
-        final URL urlInfo = URLPathUtil.getServerURL(openAPI);
-        if ( urlInfo != null && urlInfo.getPort() > 0) {
-            additionalProperties.put("serverUrl", urlInfo.toString());
-        } else {
-            additionalProperties.put("serverUrl", URLPathUtil.LOCAL_HOST);
-        }
-    }
-
     @Override
     public void processOpts() {
         super.processOpts();