Restrict call_v2 to explicit code snippets and omit session_hash from call payloads

gr2gw.go

@@ -2594,6 +2594,7 @@ type SpaceDiscovery struct {
   PrimaryModel           string              `json:"primary_model"`
   TotalInputs            int                 `json:"total_inputs"`
   RawTotalInputs         int                 `json:"raw_total_inputs,omitempty"`
+  RawDefaultInputs       []interface{}       `json:"raw_default_inputs,omitempty"`
   ParamMappings          []SpaceParamMapping `json:"param_mappings"`
   DefaultInputs          []interface{}       `json:"default_inputs"`
   MessageIsMultimodal    bool                `json:"message_is_multimodal"`
@@ -3215,18 +3216,13 @@ func InspectSpace(client *http.Client, rawURL, userAgent string) (*SpaceDiscover
 
   // Select protocol
   isCallV2 := false
-  hasSnippet := false
   if bestEndpointInfo != nil && bestEndpointInfo.CodeSnippets != nil {
     if bashSnippet, ok := bestEndpointInfo.CodeSnippets["bash"].(string); ok && bashSnippet != "" {
-      hasSnippet = true
       if strings.Contains(bashSnippet, "/call/v2/") {
         isCallV2 = true
       }
     }
   }
-  if !hasSnippet && strings.HasPrefix(discovery.GradioVersion, "6.") {
-    isCallV2 = true
-  }
 
 
   if strings.HasPrefix(discovery.GradioVersion, "3.") {
@@ -3358,6 +3354,8 @@ func InspectSpace(client *http.Client, rawURL, userAgent string) (*SpaceDiscover
         }
       }
     }
+    discovery.RawDefaultInputs = make([]interface{}, len(discovery.DefaultInputs))
+    copy(discovery.RawDefaultInputs, discovery.DefaultInputs)
 
     // If the endpoint has canonical parameters exposed via /gradio_api/info,
     // and trailing inputs in bestMatchingDep.Inputs are unexposed server-side state components,
@@ -4467,7 +4465,9 @@ func (g *GradioGateway) executePredictCompletion(w http.ResponseWriter, r *http.
   if disc.RawTotalInputs > len(predictData) {
     for i := len(predictData); i < disc.RawTotalInputs; i++ {
       var defVal interface{}
-      if i < len(disc.DefaultInputs) {
+      if i < len(disc.RawDefaultInputs) {
+        defVal = disc.RawDefaultInputs[i]
+      } else if i < len(disc.DefaultInputs) {
         defVal = disc.DefaultInputs[i]
       }
       predictData = append(predictData, defVal)
@@ -4579,7 +4579,9 @@ func (g *GradioGateway) executeQueueCompletion(w http.ResponseWriter, r *http.Re
   if disc.RawTotalInputs > len(queueData) {
     for i := len(queueData); i < disc.RawTotalInputs; i++ {
       var defVal interface{}
-      if i < len(disc.DefaultInputs) {
+      if i < len(disc.RawDefaultInputs) {
+        defVal = disc.RawDefaultInputs[i]
+      } else if i < len(disc.DefaultInputs) {
         defVal = disc.DefaultInputs[i]
       }
       queueData = append(queueData, defVal)
@@ -5036,9 +5038,6 @@ func (g *GradioGateway) ExecuteChatCompletion(w http.ResponseWriter, r *http.Req
     payloadMap := map[string]interface{}{
       "data": gradioData,
     }
-    if !disc.IsHunyuan3 {
-      payloadMap["session_hash"] = GenerateUUID()
-    }
     return json.Marshal(payloadMap)
   }