Managing HTTPS Headers in SuiteScript for Integration

HTTP headers are essential components of web requests and responses, providing critical metadata about the transaction. In SuiteScript, understanding how these headers function, especially regarding integration, is crucial for developers. Here’s a comprehensive overview of HTTPS header information, default behaviors, and practices in the context of NetSuite integration.

What are HTTP Headers?

HTTP headers consist of a case-insensitive name followed by a colon and a value, providing additional information about the request or response. It’s important to note that when defining custom headers, underscores should be avoided in the names. For a comprehensive list of standard HTTP and HTTPS headers, you can refer to documentation like that from Mozilla.

Default Content-Type Headers

When using the https.post(options) method in SuiteScript, specifying a Content-Type header is optional. If omitted, NetSuite automatically assigns a default value depending on the nature of the request body:

Response Encoding

By default, the https.ServerResponse encodes text responses in UTF-8. If your application requires a different encoding for a file return, alternatives can be explored — see the related guides for more details.

Blocked HTTPS Headers

Not all headers can be set manually in SuiteScript, particularly within the N/https module methods. Attempting to set values for certain blocked headers results in discarded values. Here is a summary of the general HTTPS headers that are restricted:

Suitelet Response HTTPS Header Restrictions

In addition to the headers mentioned above, some headers are explicitly blocked when using the https.ServerResponse objects in Suitelets. If you attempt to set these headers, it will trigger an SSS_INVALID_HEADER error. The blocked headers for Suitelet responses include:

Conclusion

Being aware of HTTPS header management is particularly important for developers working on integrations within NetSuite. By understanding both the default values and the limitations imposed by blocked headers, scripts can be designed more effectively to handle requests and responses within the NetSuite ecosystem.

Key Takeaways

• HTTP headers provide essential metadata for requests and responses.
• Default Content-Type values depend on the type of request body sent.
• Certain headers are blocked from manual setting in SuiteScript.
• Knowledge of blocked headers helps avoid runtime errors in applications.

Source: This article is based on Oracle's official NetSuite documentation.