More proxy docs update

website/docs/advanced/proxy/endpoints.md

@@ -317,7 +317,7 @@ CONFIGCAT_HTTP_CDN_PROXY_CORS_ALLOWED_ORIGINS_REGEX_PATTERNS='["https:\\/\\/.*do
 <td>-</td>
 <td>List of regex patterns used to match allowed CORS origins. When it's set, the Proxy will match the request's <code>Origin</code> with the given regex patterns. When there's a match, the <code>Access-Control-Allow-Origin</code> response header will be set to the matched origin.<br/>
 When there's no matching request origin, the Proxy will set the <code>Access-Control-Allow-Origin</code> response header to the <code>if_no_match</code> field's value.
-<br/>The <code>if_no_match</code> option is mandatory if this option is used.
+<br/>The <code>if_no_match</code> option is mandatory if this option is used.<br/>When using the environment variable, the regex escape character must be doubled (<code>\\</code>) because it's parsed as a JSON list and <code>\</code> is also a JSON escape character.
 </td>
 </tr>
 
@@ -399,13 +399,15 @@ This endpoint evaluates a single feature flag identified by a `key` with the giv
   "key": "<feature-flag-key>",
   "user": {
     "Identifier": "<user-id>",
-    "Email": "<user-email>",
-    "Country": "<user-country>",
+    "Rating": 4.5,
+    "Roles": ["Role1","Role2"],
     // any other attribute
   }
 }
 ```
 
+The type of the `user` object's fields can only be `string`, `number`, or `string[]`.
+
 **Responses**:
 <ul className="responses">
 <li className="success"><span className="status">200</span>: The feature flag evaluation finished successfully.<br/>
@@ -437,15 +439,18 @@ This endpoint evaluates all feature flags with the given [user object](/advanced
 **Request body**:
 ```json
 {
+  "key": "<feature-flag-key>",
   "user": {
     "Identifier": "<user-id>",
-    "Email": "<user-email>",
-    "Country": "<user-country>",
+    "Rating": 4.5,
+    "Roles": ["Role1","Role2"],
     // any other attribute
   }
 }
 ```
 
+The type of the `user` object's fields can only be `string`, `number`, or `string[]`.
+
 **Responses**:
 <ul className="responses">
 <li className="success"><span className="status">200</span>: The evaluation of all feature flags finished successfully.<br/>
@@ -643,7 +648,7 @@ CONFIGCAT_HTTP_API_CORS_ALLOWED_ORIGINS_REGEX_PATTERNS='["https:\\/\\/.*domain1\
 <td>-</td>
 <td>List of regex patterns used to match allowed CORS origins. When it's set, the Proxy will match the request's <code>Origin</code> with the given regex patterns. When there's a match, the <code>Access-Control-Allow-Origin</code> response header will be set to the matched origin.<br/>
 When there's no matching request origin, the Proxy will set the <code>Access-Control-Allow-Origin</code> response header to the <code>if_no_match</code> field's value.
-<br/>The <code>if_no_match</code> option is mandatory if this option is used.
+<br/>The <code>if_no_match</code> option is mandatory if this option is used.<br/>When using the environment variable, the regex escape character must be doubled (<code>\\</code>) because it's parsed as a JSON list and <code>\</code> is also a JSON escape character.
 </td>
 </tr>
 
@@ -769,10 +774,10 @@ This endpoint subscribes to a single flag's changes. Whenever the watched flag's
 ```js title="example.js"
 const rawData = {
   key: "<feature-flag-key>",
-  user: {
+  user: { // field types can only be `string`, `number`, or `string[]`.
     Identifier: "<user-id>",
-    Email: "<user-email>",
-    Country: "<user-country>",
+    Rating: 4.5,
+    Roles: ["Role1","Role2"],
     // any other attribute
   }
 }
@@ -821,10 +826,10 @@ This endpoint subscribes to all feature flags' changes behind the given [SDK ide
 **Example**:
 ```js title="example.js"
 const rawData = {
-  user: {
+  user: { // field types can only be `string`, `number`, or `string[]`.
     Identifier: "<user-id>",
-    Email: "<user-email>",
-    Country: "<user-country>",
+    Rating: 4.5,
+    Roles: ["Role1","Role2"],
     // any other attribute
   }
 }
@@ -960,7 +965,8 @@ CONFIGCAT_HTTP_SSE_CORS_ALLOWED_ORIGINS_REGEX_PATTERNS='["https:\\/\\/.*domain1\
 </td>
 <td>-</td>
 <td>List of regex patterns used to match allowed CORS origins. When it's set, the Proxy will match the request's <code>Origin</code> with the given regex patterns. When there's a match, the <code>Access-Control-Allow-Origin</code> response header will be set to the matched origin.<br/>
-When there's no matching request origin, the Proxy will set the <code>Access-Control-Allow-Origin</code> response header to the <code>if_no_match</code> field's value.<br/>The <code>if_no_match</code> option is mandatory if this option is used.</td>
+When there's no matching request origin, the Proxy will set the <code>Access-Control-Allow-Origin</code> response header to the <code>if_no_match</code> field's value.<br/>The <code>if_no_match</code> option is mandatory if this option is used.<br/>When using the environment variable, the regex escape character must be doubled (<code>\\</code>) because it's parsed as a JSON list and <code>\</code> is also a JSON escape character.
+</td>
 </tr>
 
 <tr>

website/docs/advanced/proxy/grpc.md

@@ -16,9 +16,12 @@ To establish gRPC connections, you'll need the protobuf and the gRPC <a target="
 ```protobuf title="flag_service.proto"
 syntax = "proto3";
 
+option go_package = "github.com/configcat/configcat-proxy/grpc/proto";
+
 package configcat;
 
 import "google/protobuf/empty.proto";
+import "google/protobuf/timestamp.proto";
 
 // Service that contains feature flag evaluation procedures.
 service FlagService {
@@ -44,7 +47,7 @@ message EvalRequest {
   // The feature flag's key to evaluate.
   string key = 2;
   // The user object.
-  map<string, string> user = 3;
+  map<string, UserValue> user = 3;
 }
 
 // Feature flag evaluation response message.
@@ -83,6 +86,21 @@ message RefreshRequest {
   // The SDK identifier.
   string sdk_id = 1;
 }
+
+// Defines the possible values that can be set in the `user` map.
+message UserValue {
+  oneof value {
+    double number_value = 1;
+    string string_value = 2;
+    google.protobuf.Timestamp time_value = 3;
+    StringList string_list_value = 4;
+  }
+}
+
+// Represents a list of strings.
+message StringList {
+  repeated string values = 1;
+}
 ```
 
 In order to secure the gRPC communication with the Proxy, set up [TLS](/advanced/proxy/proxy-overview#tls).
@@ -119,7 +137,7 @@ defer cancel()
 resp, err := client.EvalFlag(ctx, &proto.EvalRequest{
     SdkId: "my_sdk", 
     Key: "<flag-key>", 
-    User: map[string]string{"Identifier": "<user-id>"}
+    User: map[string]*proto.UserValue{"Identifier": {Value: &proto.UserValue_StringValue{StringValue: "<user-id>"}}}
 })
 if err != nil {
     panic(err)