Wasp-lang•2mo ago

request too large

in a wasp action, while uploading the base64 of an image (adds up to ~400kb) i get request too large error. do i have access to the bodyparser in actions? (to increase the limit) or how should i proceed

13 Replies

kapa.ai•2mo ago

Hi @Angeliki. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Hmm, I don't know enough to give you a confident answer yet. The knowledge sources provided do not contain specific information about handling large requests or adjusting the bodyparser limit in Wasp actions. However, there is a discussion about handling FormData in a custom endpoint in Wasp, which might be related to your issue. A user suggested using multer middleware to handle file uploads. Here is the code snippet they provided:

import { MiddlewareConfigFn } from '@wasp/middleware';
import multer from 'multer';

export const apiMiddleware: MiddlewareConfigFn = (config) => {
  const upload = multer();

  config.set('multer', upload.single('file'));
}

import { MiddlewareConfigFn } from '@wasp/middleware';
import multer from 'multer';

export const apiMiddleware: MiddlewareConfigFn = (config) => {
  const upload = multer();

  config.set('multer', upload.single('file'));
}

(Source: Github Issue (closed): Api can't handle FormData (https://github.com/wasp-lang/wasp/issues/1683)) For more detailed advice on file upload, you might find this guide helpful: OpenSaaS File Uploading Guide (https://docs.opensaas.sh/guides/file-uploading/). It's written for the "open-saas" Wasp template, but most of it should be applicable to any Wasp codebase. Please consult the Wasp documentation or community for more specific guidance on handling large requests in Wasp actions. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Angeliki•2mo ago

is there any way to increase the request limit without custom endpoint? @kapa.ai

kapa.ai•2mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Based on the provided knowledge sources, there isn't a direct mention of increasing the request limit for Wasp actions without using a custom endpoint. However, you can customize the global middleware which applies to all operations and APIs in Wasp. This is done by defining a middlewareConfigFn in the server field of the app declaration in your main.wasp file. Here's an example:

app MyApp {  
 // ...  
 server: {  
 setupFn: import { mySetupFunction } from "@src/myServerSetupCode.js",  
 middlewareConfigFn: import { myMiddlewareConfigFn } from "@src/myServerSetupCode.js"  
 }  
}

app MyApp {  
 // ...  
 server: {  
 setupFn: import { mySetupFunction } from "@src/myServerSetupCode.js",  
 middlewareConfigFn: import { myMiddlewareConfigFn } from "@src/myServerSetupCode.js"  
 }  
}

(Source: Wasp Docs - Project - Server Config (https://wasp-lang.dev/docs/project/server-config)) In the myMiddlewareConfigFn, you can potentially adjust the middleware settings to increase the request limit. However, the exact way to do this isn't specified in the provided knowledge sources. For more detailed information, you might want to check the Wasp Docs - Advanced - Configuring Middleware (https://wasp-lang.dev/docs/advanced/middleware-config) or consult the Wasp community. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Angeliki•2mo ago

@kapa.ai How could i configure this for example? "app.use(bodyParser.json({ limit: '10mb' }));" give me the implementation please

kapa.ai•2mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To configure the body-parser middleware with a custom limit in Wasp, you would need to define a middlewareConfigFn in your main.wasp file. Here's an example of how you could do it: In your main.wasp file:

app MyApp {
  // ...
  server: {
    setupFn: import { mySetupFunction } from "@src/myServerSetupCode.js",
    middlewareConfigFn: import { myMiddlewareConfigFn } from "@src/myServerSetupCode.js"
  }
}

app MyApp {
  // ...
  server: {
    setupFn: import { mySetupFunction } from "@src/myServerSetupCode.js",
    middlewareConfigFn: import { myMiddlewareConfigFn } from "@src/myServerSetupCode.js"
  }
}

Then, in your myServerSetupCode.js file:

import bodyParser from 'body-parser';

export const myMiddlewareConfigFn = (config) => {
  config.set('express.json', bodyParser.json({ limit: '10mb' }));
}

import bodyParser from 'body-parser';

export const myMiddlewareConfigFn = (config) => {
  config.set('express.json', bodyParser.json({ limit: '10mb' }));
}

This will replace the default express.json middleware (which uses body-parser under the hood) with a new instance that has a custom limit of 10mb. Please note that this is a hypothetical example and the exact implementation might differ based on your specific setup and requirements. Always refer to the official Wasp documentation and community for the most accurate and up-to-date information. Sources: - Wasp Docs - Project - Server Config (https://wasp-lang.dev/docs/project/server-config#middleware-config-function) - Wasp Docs - Advanced - Configuring Middleware (https://wasp-lang.dev/docs/advanced/middleware-config) ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Angeliki•2mo ago

@kapa.ai this seemed to work:

import bodyParser from 'body-parser';

export const myMiddlewareConfigFn = (config) => {
    config.set('express.json', bodyParser.json({ limit: '10mb' }));
    return config;
}

import bodyParser from 'body-parser';

export const myMiddlewareConfigFn = (config) => {
    config.set('express.json', bodyParser.json({ limit: '10mb' }));
    return config;
}

` however, does it have any side effects?

kapa.ai•2mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The code you've provided sets the limit for incoming JSON payloads to 10mb, which is larger than the default limit. This means your server can now accept larger JSON payloads in requests. However, increasing the limit can have potential side effects: 1. Memory Usage: Larger payloads mean more memory usage. If your server receives a lot of large requests, it could potentially use up a significant amount of memory, which could impact the performance of your server or even cause it to crash if it runs out of memory. 2. Processing Time: Larger payloads take longer to process. This could slow down your server, especially if it's receiving a lot of large requests. 3. Bandwidth: Larger payloads use more bandwidth. If your server or your users are on a network with limited bandwidth, this could slow down the network or use up the available bandwidth. 4. Security: Allowing larger payloads could potentially open up your server to certain types of denial-of-service (DoS) attacks, where an attacker sends a lot of large requests to try to overwhelm your server. It's important to set the limit to a value that balances the needs of your application with the resources of your server and the potential security risks. If you're unsure, it might be a good idea to consult with someone who has experience with server configuration and security. Sources: - Wasp Docs - Project - Server Config (https://wasp-lang.dev/docs/project/server-config#middleware-config-function) - Wasp Docs - Advanced - Configuring Middleware (https://wasp-lang.dev/docs/advanced/middleware-config) ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Angeliki•2mo ago

@kapa.ai i mean any side effects in changing the server behavior apart from the request limit

MEE6•2mo ago

Wohooo @Angeliki, you just became a Waspeteer level 1!

kapa.ai•2mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The provided code only changes the limit for incoming JSON payloads, and it shouldn't affect other aspects of the server behavior. However, it's important to note that this code replaces the default express.json middleware with a new instance of body-parser.json. If there are any differences between the default express.json middleware and body-parser.json, those could potentially affect your server's behavior. For example, if express.json has certain default settings or behaviors that body-parser.json doesn't, and your server relies on those, then replacing express.json with body-parser.json could potentially cause issues. In general, it's a good idea to thoroughly test your server after making changes like this to ensure that everything still works as expected. Sources: - Wasp Docs - Project - Server Config (https://wasp-lang.dev/docs/project/server-config#middleware-config-function) - Wasp Docs - Advanced - Configuring Middleware (https://wasp-lang.dev/docs/advanced/middleware-config) ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Angeliki•2mo ago

@kapa.ai that was my concern, whether wasp has a different implementation that i override with potentially unknown sideeffects.

kapa.ai•2mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Based on the provided knowledge sources, Wasp doesn't seem to have a custom implementation of the express.json middleware. It uses the default express.json middleware, which is a built-in middleware function in Express. It parses incoming requests with JSON payloads. When you replace the express.json middleware with body-parser.json using the config.set function, you're essentially replacing the default JSON parser with another one and setting a custom limit. The body-parser.json middleware is almost identical to express.json as Express.js actually uses the body-parser middleware internally. Therefore, replacing express.json with body-parser.json should not introduce any unknown side effects, apart from changing the payload size limit. However, it's always a good practice to thoroughly test your application after making such changes to ensure everything works as expected. Sources: - Wasp Docs - Project - Server Config (https://wasp-lang.dev/docs/project/server-config#middleware-config-function) - Wasp Docs - Advanced - Configuring Middleware (https://wasp-lang.dev/docs/advanced/middleware-config) ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Angeliki, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

miho•5w ago

This is the recommeded way to do it 🙂 nice job on figuring it out with Kapa!

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request too large