Webhook: allow setting generic response-headers

packages/cli/src/WebhookHelpers.ts

@@ -149,6 +149,16 @@ export function getWorkflowWebhooks(workflow: Workflow, additionalData: IWorkflo
 			};
 		}
 
+		if (webhookData.webhookDescription['responseHeaders'] !== undefined) {
+			const responseHeaders = workflow.getComplexParameterValue(workflowStartNode, webhookData.webhookDescription['responseHeaders'], undefined) as any;
+
+			if (responseHeaders !== undefined && responseHeaders['entries'] !== undefined) {
+				for (const item of responseHeaders['entries']) {
+					res.setHeader(item['name'], item['value'])
+				}
+			}
+		}
+
 		if (webhookResultData.noWebhookResponse === true && didSendResponse === false) {
 			// The response got already send
 			responseCallback(null, {

packages/nodes-base/nodes/Webhook.node.ts

@@ -85,6 +85,7 @@ export class Webhook implements INodeType {
 				responseBinaryPropertyName: '={{$parameter["responseBinaryPropertyName"]}}',
 				responseContentType: '={{$parameter["options"]["responseContentType"]}}',
 				responsePropertyName: '={{$parameter["options"]["responsePropertyName"]}}',
+				responseHeaders: '={{$parameter["options"]["responseHeaders"]}}',
 				path: '={{$parameter["path"]}}',
 			},
 		],
@@ -268,6 +269,39 @@ export class Webhook implements INodeType {
 						placeholder: 'application/xml',
 						description: 'Set a custom content-type to return if another one as the "application/json" should be returned.',
 					},
+					{
+						displayName: 'Response Headers',
+						name: 'responseHeaders',
+						placeholder: 'Add Response Header',
+						description: 'Add headers to the webhook response.',
+						type: 'fixedCollection',
+						typeOptions: {
+							multipleValues: true,
+						},
+						default: {},
+						options: [
+							{
+								name: 'entries',
+								displayName: 'Entries',
+								values: [
+									{
+										displayName: 'Name',
+										name: 'name',
+										type: 'string',
+										default: '',
+										description: 'Name of the header.',
+									},
+									{
+										displayName: 'Value',
+										name: 'value',
+										type: 'string',
+										default: '',
+										description: 'Value of the header.',
+									},
+								]
+							},
+						],
+					},
 					{
 						displayName: 'Property Name',
 						name: 'responsePropertyName',

packages/workflow/src/Workflow.ts

@@ -734,7 +734,33 @@ export class Workflow {
 		return this.getParameterValue(parameterValue, runData, runIndex, itemIndex, node.name, connectionInputData) as boolean | number | string | undefined;
 	}
 
+	/**
+	 * Resolves value of complex parameter. But does not work for workflow-data.
+	 *
+	 * @param {INode} node
+	 * @param {(NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[])} parameterValue
+	 * @param {(NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[] | undefined)} [defaultValue]
+	 * @returns {(NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[] | undefined)}
+	 * @memberof Workflow
+	 */
+	getComplexParameterValue(node: INode, parameterValue: NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[], defaultValue: NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[] | undefined = undefined): NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[] | undefined {
+		if (parameterValue === undefined) {
+			// Value is not set so return the default
+			return defaultValue;
+		}
 
+		// Get the value of the node (can be an expression)
+		const runIndex = 0;
+		const itemIndex = 0;
+		const connectionInputData: INodeExecutionData[] = [];
+		const runData: IRunExecutionData = {
+			resultData: {
+				runData: {},
+			}
+		};
+
+		return this.getParameterValue(parameterValue, runData, runIndex, itemIndex, node.name, connectionInputData);
+	}
 
 	/**
 	 * Returns from which of the given nodes the workflow should get started from