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chiyi
2026-07-29 21:15:37 +08:00
parent 9a032c6107
commit c30155b001
2 changed files with 72 additions and 12 deletions
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backend/internal/provider/chatgpt/client.go
+38 -12
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@@ -104,12 +104,24 @@ func (c *Client) GenerateImage(ctx context.Context, accessToken, prompt, model,
if err != nil {
return nil, nil, err
}
// The generation submit is the only request that egresses via the proxy.
submitSession, err := c.newSession(accessToken)
if err != nil {
return nil, nil, err
// The generation submit is the only request that egresses via the proxy. A
// bare connection error here (EOF / connection reset) is almost always the
// proxy hop flaking rather than the account, so retry the submit on a fresh
// connection a few times before surfacing it — otherwise a momentary network
// blip fails over accounts (burning their quota) or fails the request.
var conversationID string
var fileIDs, sedimentIDs []string
for attempt := 0; ; attempt++ {
submitSession, sErr := c.newSession(accessToken)
if sErr != nil {
return nil, nil, sErr
}
conversationID, fileIDs, sedimentIDs, err = c.startImageGeneration(ctx, submitSession, accessToken, effectivePrompt, reqs, conduitToken, model, uploadedRefs)
if err == nil || attempt >= submitConnectRetries || ctx.Err() != nil || !isConnResetErr(err) {
break
}
time.Sleep(submitRetryBackoff)
}
conversationID, fileIDs, sedimentIDs, err := c.startImageGeneration(ctx, submitSession, accessToken, effectivePrompt, reqs, conduitToken, model, uploadedRefs)
if err != nil {
return nil, nil, err
}
@@ -809,26 +821,39 @@ func (c *Client) prepareImageConversation(ctx context.Context, session tlsclient
func (c *Client) startImageGeneration(ctx context.Context, session tlsclient.HttpClient, accessToken, prompt string, reqs *chatRequirements, conduitToken, model string, refs []uploadedReference) (string, []string, []string, error) {
path := "/backend-api/f/conversation"
content := map[string]any{"content_type": "text", "parts": []string{prompt}}
// Match the web app: a picture_v2 prompt is sent as the "@创建图片" ecosystem
// mention followed by the prompt, with the mention marked via a
// custom_symbol_offset so the server routes the turn to image generation.
content := map[string]any{"content_type": "text", "parts": []string{pictureV2Command + " " + prompt}}
metadata := map[string]any{
"selected_github_repos": []any{},
"selected_all_github_repos": false,
"system_hints": []string{"picture_v2"},
"serialization_metadata": map[string]any{"custom_symbol_offsets": []any{}},
"system_hints": []string{"picture_v2"},
"serialization_metadata": map[string]any{
"custom_symbol_offsets": []any{
map[string]any{
"id": "picture_v2",
"symbol": "ecosystemMention",
"startIndex": 0,
"endIndex": pictureV2MentionEnd,
},
},
},
}
if len(refs) > 0 {
// Reference-image turns carry image parts and no leading mention, so keep
// the multimodal shape and drop the ecosystemMention offset.
content = map[string]any{
"content_type": "multimodal_text",
"parts": buildMultimodalParts(refs, prompt),
}
metadata["attachments"] = buildAttachmentMetadata(refs)
metadata["serialization_metadata"] = map[string]any{"custom_symbol_offsets": []any{}}
}
payload := map[string]any{
"action": "next",
"messages": []map[string]any{{
"id": newUUID(),
"author": map[string]any{"role": "user"},
"create_time": float64(time.Now().Unix()),
"create_time": float64(timeMillis()) / 1000.0,
"content": content,
"metadata": metadata,
}},
@@ -842,9 +867,10 @@ func (c *Client) startImageGeneration(ctx context.Context, session tlsclient.Htt
"system_hints": []string{"picture_v2"},
"supports_buffering": true,
"supported_encodings": []string{"v1"},
"client_contextual_info": map[string]any{"is_dark_mode": false, "time_since_loaded": 1200, "page_height": 1072, "page_width": 1724, "pixel_ratio": 1.2, "screen_height": 1440, "screen_width": 2560, "app_name": "chatgpt.com"},
"client_contextual_info": map[string]any{"is_dark_mode": false, "time_since_loaded": 1200, "page_height": 1072, "page_width": 1724, "pixel_ratio": 1.2, "screen_height": 1440, "screen_width": 2560, "app_name": "chatgpt.com", "has_web_push_capabilities": true, "web_push_notification_permission": "default"},
"paragen_cot_summary_display_override": "allow",
"force_parallel_switch": "auto",
"local_function_names": []string{"local.continue_in_work"},
}
body, _ := json.Marshal(payload)
req, err := http.NewRequest(http.MethodPost, baseURL+path, bytes.NewReader(body))