Add a custom header field to the ChatCompletionRequest function for s…

…etting customer's own header information.

chat.go

@@ -3,6 +3,7 @@ package openai
 import (
 	"context"
 	"errors"
+
 	"net/http"
 )
 
@@ -88,6 +89,7 @@ type ChatCompletionRequest struct {
 	User         string               `json:"user,omitempty"`
 	Functions    []FunctionDefinition `json:"functions,omitempty"`
 	FunctionCall any                  `json:"function_call,omitempty"`
+	Headers map[string]string      `json:"headers,omitempty"`
 }
 
 type FunctionDefinition struct {
@@ -160,11 +162,17 @@ func (c *Client) CreateChatCompletion(
 		return
 	}
 
+	headers := request.Headers
+	request.Headers = nil // 保持兼容，设置为空
 	req, err := c.newRequest(ctx, http.MethodPost, c.fullURL(urlSuffix, request.Model), withBody(request))
 	if err != nil {
 		return
 	}
 
+	for header, value := range headers {
+		req.Header.Set(header, value)
+	}
+
 	err = c.sendRequest(req, &response)
 	return
 }

client.go

@@ -148,7 +148,10 @@ func (c *Client) setCommonHeaders(req *http.Request) {
 		req.Header.Set(AzureAPIKeyHeader, c.config.authToken)
 	} else {
 		// OpenAI or Azure AD authentication
-		req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", c.config.authToken))
+		if c.config.authToken != ""{
+			req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", c.config.authToken))
+		}
+
 	}
 	if c.config.OrgID != "" {
 		req.Header.Set("OpenAI-Organization", c.config.OrgID)