LibreChat/api/server/middleware/setHeaders.js

function setHeaders(req, res, next) {
  res.writeHead(200, {
    Connection: 'keep-alive',
    'Content-Type': 'text/event-stream',
    'Cache-Control': 'no-cache, no-transform',
    'Access-Control-Allow-Origin': '*',
    'X-Accel-Buffering': 'no',
  });
  next();
}

module.exports = setHeaders;
feat(GPT/Anthropic): Continue Regenerating & Generation Buttons (#808) * feat(useMessageHandler.js/ts): Refactor and add features to handle user messages, support multiple endpoints/models, generate placeholder responses, regeneration, and stopGeneration function fix(conversation.ts, buildTree.ts): Import TMessage type, handle null parentMessageId feat(schemas.ts): Update and add schemas for various AI services, add default values, optional fields, and endpoint-to-schema mapping, create parseConvo function chore(useMessageHandler.js, schemas.ts): Remove unused imports, variables, and chatGPT enum * wip: add generation buttons * refactor(cleanupPreset.ts): simplify cleanupPreset function refactor(getDefaultConversation.js): remove unused code and simplify getDefaultConversation function feat(utils): add getDefaultConversation function This commit adds a new utility function called `getDefaultConversation` to the `client/src/utils/getDefaultConversation.ts` file. This function is responsible for generating a default conversation object based on the provided parameters. The `getDefaultConversation` function takes in an object with the following properties: - `conversation`: The conversation object to be used as a base. - `endpointsConfig`: The configuration object containing information about the available endpoints. - `preset`: An optional preset object that can be used to override the default behavior. The function first tries to determine the target endpoint based on the preset object. If a valid endpoint is found, it is used as the target endpoint. If not, the function tries to retrieve the last conversation setup from the local storage and uses its endpoint if it is valid. If neither the preset nor the local storage contains a valid endpoint, the function falls back to a default endpoint. Once the target endpoint is determined, * fix(utils): remove console.error statement in buildDefaultConversation function fix(schemas): add default values for catch blocks in openAISchema, googleSchema, bingAISchema, anthropicSchema, chatGPTBrowserSchema, and gptPluginsSchema * fix: endpoint not changing on change of preset from other endpoint, wip: refactor * refactor: preset items to TSX * refactor: convert resetConvo to TS * refactor(getDefaultConversation.ts): move defaultEndpoints array to the top of the file for better readability refactor(getDefaultConversation.ts): extract getDefaultEndpoint function for better code organization and reusability * feat(svg): add ContinueIcon component feat(svg): add RegenerateIcon component feat(svg): add ContinueIcon and RegenerateIcon components to index.ts * feat(Button.tsx): add onClick and className props to Button component feat(GenerationButtons.tsx): add logic to display Regenerate or StopGenerating button based on isSubmitting and messages feat(Regenerate.tsx): create Regenerate component with RegenerateIcon and handleRegenerate function feat(StopGenerating.tsx): create StopGenerating component with StopGeneratingIcon and handleStopGenerating function * fix(TextChat.jsx): reorder imports and variables for better readability fix(TextChat.jsx): fix typo in condition for isNotAppendable variable fix(TextChat.jsx): remove unused handleStopGenerating function fix(ContinueIcon.tsx): remove unnecessary closing tags for polygon elements fix(useMessageHandler.ts): add missing type annotations for handleStopGenerating and handleRegenerate functions fix(useMessageHandler.ts): remove unused variables in return statement * fix(getDefaultConversation.ts): refactor code to use getLocalStorageItems function feat(getLocalStorageItems.ts): add utility function to retrieve items from local storage * fix(OpenAIClient.js): add support for streaming result in sendCompletion method feat(OpenAIClient.js): add finish_reason metadata to opts in sendCompletion method feat(Message.js): add finish_reason field to Message model feat(messageSchema.js): add finish_reason field to messageSchema feat(openAI.js): parse chatGptLabel and promptPrefix from req.body and pass rest of the modelOptions to endpointOption feat(openAI.js): add addMetadata function to store metadata in ask function feat(openAI.js): add metadata to response if available feat(schemas.ts): add finish_reason field to tMessageSchema * feat(types.ts): add TOnClick and TGenButtonProps types for button components feat(Continue.tsx): create Continue component for generating button feat(GenerationButtons.tsx): update GenerationButtons component to use Continue component feat(Regenerate.tsx): create Regenerate component for regenerating button feat(Stop.tsx): create Stop component for stop generating button * feat(MessageHandler.jsx): add MessageHandler component to handle messages and conversations fix(Root.jsx): fix import paths for Nav and MessageHandler components * feat(useMessageHandler.ts): add support for generation parameter in ask function feat(useMessageHandler.ts): add support for isEdited parameter in ask function feat(useMessageHandler.ts): add support for continueGeneration function fix(createPayload.ts): replace endpoint URL when isEdited parameter is true * chore(client): set skipLibCheck to true in tsconfig.json * fix(useMessageHandler.ts): remove unused clientId variable fix(schemas.ts): make clientId field in tMessageSchema nullable and optional * wip: edit route for continue generation * refactor(api): move handlers to root of routes dir * fix(useMessageHandler.ts): initialize currentMessages to an empty array if messages is null fix(useMessageHandler.ts): update initialResponse text to use responseText variable fix(useMessageHandler.ts): update setMessages logic for isRegenerate case fix(MessageHandler.jsx): update setMessages logic for cancelHandler, createdHandler, and finalHandler * fix(schemas.ts): make createdAt and updatedAt fields optional and set default values using new Date().toISOString() fix(schemas.ts): change type annotation of TMessage from infer to input * refactor(useMessageHandler.ts): rename AskProps type to TAskProps refactor(useMessageHandler.ts): remove generation property from ask function arguments refactor(useMessageHandler.ts): use nullish coalescing operator (??) instead of logical OR (\|\|) refactor(useMessageHandler.ts): pass the responseMessageId to message prop of submission * fix(BaseClient.js): use nullish coalescing operator (??) instead of logical OR (\|\|) for default values * fix(BaseClient.js): fix responseMessageId assignment in handleStartMethods method feat(BaseClient.js): add support for isEdited flag in sendMessage method feat(BaseClient.js): add generation to responseMessage text in sendMessage method * fix(openAI.js): remove unused imports and commented out code feat(openAI.js): add support for generation parameter in request body fix(openAI.js): remove console.log statement fix(openAI.js): remove unused variables and parameters fix(openAI.js): update response text in case of error fix(openAI.js): handle error and abort message in case of error fix(handlers.js): add generation parameter to createOnProgress function fix(useMessageHandler.ts): update responseText variable to use generation parameter * refactor(api/middleware): move inside server dir * refactor: add endpoint specific, modular functions to build options and initialize clients, create server/utils, move middleware, separate utils into api general utils and server specific utils * fix(abortMiddleware.js): import getConvo and getConvoTitle functions from models feat(abortMiddleware.js): add abortAsk function to abortController to handle aborting of requests fix(openAI.js): import buildOptions and initializeClient functions from endpoints/openAI refactor(openAI.js): use getAbortData function to get data for abortAsk function * refactor: move endpoint specific logic to an endpoints dir * refactor(PluginService.js): fix import path for encrypt and decrypt functions in PluginService.js * feat(openAI): add new endpoint for adding a title to a conversation - Added a new file `addTitle.js` in the `api/server/routes/endpoints/openAI` directory. - The `addTitle.js` file exports a function `addTitle` that takes in request parameters and performs the following actions: - If the `parentMessageId` is `'00000000-0000-0000-0000-000000000000'` and `newConvo` is true, it proceeds with the following steps: - Calls the `titleConvo` function from the `titleConvo` module, passing in the necessary parameters. - Calls the `saveConvo` function from the `saveConvo` module, passing in the user ID and conversation details. - Updated the `index.js` file in the `api/server/routes/endpoints/openAI` directory to export the `addTitle` function. - This change adds * fix(abortMiddleware.js): remove console.log statement refactor(gptPlugins.js): update imports and function parameters feat(gptPlugins.js): add support for abortController and getAbortData refactor(openAI.js): update imports and function parameters feat(openAI.js): add support for abortController and getAbortData fix(openAI.js): refactor code to use modularized functions and middleware fix(buildOptions.js): refactor code to use destructuring and update variable names * refactor(askChatGPTBrowser.js, bingAI.js, google.js): remove duplicate code for setting response headers feat(askChatGPTBrowser.js, bingAI.js, google.js): add setHeaders middleware to set response headers * feat(middleware): validateEndpoint, refactor buildOption to only be concerned of endpointOption * fix(abortMiddleware.js): add 'finish_reason' property with value 'incomplete' to responseMessage object fix(abortMessage.js): remove console.log statement for aborted message fix(handlers.js): modify tokens assignment to handle empty generation string and trailing space * fix(BaseClient.js): import addSpaceIfNeeded function from server/utils fix(BaseClient.js): add space before generation in text property fix(index.js): remove getCitations and citeText exports feat(buildEndpointOption.js): add buildEndpointOption middleware fix(index.js): import buildEndpointOption middleware fix(anthropic.js): remove buildOptions function and use endpointOption from req.body fix(gptPlugins.js): remove buildOptions function and use endpointOption from req.body fix(openAI.js): remove buildOptions function and use endpointOption from req.body feat(utils): add citations.js and handleText.js modules fix(utils): fix import statements in index.js module * refactor(gptPlugins.js): use getResponseSender function from librechat-data-provider * feat(gptPlugins): complete 'continue generating' * wip: anthropic continue regen * feat(middleware): add validateRegistration middleware A new middleware function called `validateRegistration` has been added to the list of exported middleware functions in `index.js`. This middleware is responsible for validating registration data before allowing the registration process to proceed. * feat(Anthropic): complete continue regen * chore: add librechat-data-provider to api/package.json * fix(ci): backend-review will mock meilisearch, also installs data-provider as now needed * chore(ci): remove unneeded SEARCH env var * style(GenerationButtons): make text shorter for sake of space economy, even though this diverges from chat.openai.com * style(GenerationButtons/ScrollToBottom): adjust visibility/position based on screen size * chore(client): 'Editting' typo * feat(GenerationButtons.tsx): add support for endpoint prop in GenerationButtons component feat(OptionsBar.tsx): pass endpoint prop to GenerationButtons component feat(useGenerations.ts): create useGenerations hook to handle generation logic fix(schemas.ts): add searchResult field to tMessageSchema * refactor(HoverButtons): convert to TSX and utilize new useGenerations hook * fix(abortMiddleware): handle error with res headers set, or abortController not found, to ensure proper API error is sent to the client, chore(BaseClient): remove console log for onStart message meant for debugging * refactor(api): remove librechat-data-provider dep for now as it complicates deployed docker build stage, re-use code in CJS, located in server/endpoints/schemas * chore: remove console.logs from test files * ci: add backend tests for AnthropicClient, focusing on new buildMessages logic * refactor(FakeClient): use actual BaseClient sendMessage method for testing * test(BaseClient.test.js): add test for loading chat history test(BaseClient.test.js): add test for sendMessage logic with isEdited flag * fix(buildEndpointOption.js): add support for azureOpenAI in buildFunction object wip(endpoints.js): fetch Azure models from Azure OpenAI API if opts.azure is true * fix(Button.tsx): add data-testid attribute to button component fix(SelectDropDown.tsx): add data-testid attribute to Listbox.Button component fix(messages.spec.ts): add waitForServerStream function to consolidate logic for awaiting the server response feat(messages.spec.ts): add test for stopping and continuing message and improve browser/page context order and closing * refactor(onProgress): speed up time to save initial message for editable routes * chore: disable AI message editing (for now), was accidentally allowed * refactor: ensure continue is only supported for latest message style: improve styling in dark mode and across all hover buttons/icons, including making edit icon for AI invisible (for now) * fix: add test id to generation buttons so they never resolve to 2+ items * chore(package.json): add 'packages/' to the list of ignored directories chore(data-provider/package.json): bump version to 0.1.5 2023-08-17 12:50:05 -04:00			`function setHeaders(req, res, next) {`
			`res.writeHead(200, {`
			`Connection: 'keep-alive',`
			`'Content-Type': 'text/event-stream',`
			`'Cache-Control': 'no-cache, no-transform',`
			`'Access-Control-Allow-Origin': '*',`
			`'X-Accel-Buffering': 'no',`
			`});`
			`next();`
			`}`

			`module.exports = setHeaders;`