Control Escape characters cause a 400 Bad Request

[rmalde]

Control escape characters (like u+001b) sent in the request cause a 400 bad request error.

�package main

import (
	"context"

	"github.com/openai/openai-go"
)

func main() {
	client := openai.NewClient()
	model := "gpt-4o-mini"
	ctx := context.Background()
	messages := []openai.ChatCompletionMessageParamUnion{
		openai.SystemMessage("You are an AI model"),
		openai.UserMessage("Hello\x1BWorld"),
	}

	params := openai.ChatCompletionNewParams{
		Messages:            openai.F(messages),
		Model:               openai.String(model),
	}

	chatCompletion, err := client.Chat.Completions.New(ctx, params)
	if err != nil {
		panic(err.Error())
	}
	println(chatCompletion.Choices[0].Message.Content)
}

panic: POST "https://api.openai.com/v1/chat/completions": 400 Bad Request {
            "error": {
                "message": "We could not parse the JSON body of your request. (HINT: This likely means you aren't using your HTTP library correctly. The OpenAI API expects a JSON payload, but what was sent was not valid JSON. If you have trouble figuring out how to fix this, please contact us through our help center at help.openai.com.)",
                "type": "invalid_request_error",
                "param": null,
                "code": null
            }
        }

This is handled gracefully on the sashabaranov/go-openai library

Thanks!