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HTTP status codes are crucial indicators that web servers use to communicate with clients about the result of their request. The 100 Continue status code is one of them. When a client sends a request to the server, the server may respond with a 100 Continue status code to indicate that the initial part of the request has been received and understood, and the client should continue with the request or ignore it if it has already been completed.
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Expect
header. If a client sends a request with the Expect: 100-continue
header, the server may respond with 100 Continue before the client sends the request body, based on its criteria.Implementing the 100 Continue status code in JavaScript requires understanding how to handle HTTP requests and responses. Below is a simple example using the fetch
API:
fetch('<https://example.com/resource>', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Expect': '100-continue'
},
body: JSON.stringify(data)
}).then(response => {
if (response.status === 100) {
// Continue with the request
return response.json();
} else {
// Handle other status codes
throw new Error('Unexpected status code: ' + response.status);
}
}).then(data => {
// Handle response data
}).catch(error => {
// Handle errors
});
Testing the 100 Continue status code in Postman is straightforward:
Expect: 100-continue
if necessary.Testing the 100 Continue status code in Chrome DevTools involves:
HTTP/1.1 100 Continue
in the response headers.Debug and fix API errors with Zipy Error Monitoring.
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A: Use the 100 Continue status code when the server needs to indicate readiness to receive the rest of the request body, typically in scenarios involving large data uploads.
A: No, it's not mandatory. Its usage depends on the server's implementation and the specific requirements of the application.
A: Yes, the client can ignore the 100 Continue response and proceed with sending the request body anyway.
A: The server decides based on its internal logic and any criteria specified in the request headers, such as the Expect
header.
A: One potential drawback is increased complexity in handling requests and responses, especially for applications dealing with large volumes of data.
Understanding the 100 Continue HTTP status code is crucial for efficient communication between clients and servers, especially in scenarios involving large data transfers. By implementing best practices and testing methodologies, developers can ensure smooth handling of requests and responses. For advanced error monitoring and handling capabilities, consider using Zipy's tool with session replay functionality.
Feel free to comment or write to us in case you have any further questions at support@zipy.ai. We would be happy to help you. In case you want to explore for your app, you can sign up or book a demo.