[Home](./index.md) > [sip.js](./sip.js.md) > [UserAgentCore](./sip.js.useragentcore.md) > [makeOutgoingRequestMessage](./sip.js.useragentcore.makeoutgoingrequestmessage.md) ## UserAgentCore.makeOutgoingRequestMessage() method Outgoing request message factory function. Signature: ```typescript makeOutgoingRequestMessage(method: string, requestURI: URI, fromURI: URI, toURI: URI, options: OutgoingRequestMessageOptions, extraHeaders?: Array, body?: Body): OutgoingRequestMessage; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | method | string | Method. | | requestURI | URI | Request-URI. | | fromURI | URI | From URI. | | toURI | URI | To URI. | | options | OutgoingRequestMessageOptions | Request options. | | extraHeaders | Array<string> | Extra headers to add. | | body | Body | Message body. | Returns: `OutgoingRequestMessage`