feat(client): retry on 408 Request Timeout (#310)

README.md

@@ -178,8 +178,8 @@ See [`@azure/openai`](https://www.npmjs.com/package/@azure/openai) for an Azure-
 ### Retries
 
 Certain errors will be automatically retried 2 times by default, with a short exponential backoff.
-Connection errors (for example, due to a network connectivity problem), 409 Conflict, 429 Rate Limit,
-and >=500 Internal errors will all be retried by default.
+Connection errors (for example, due to a network connectivity problem), 408 Request Timeout, 409 Conflict,
+429 Rate Limit, and >=500 Internal errors will all be retried by default.
 
 You can use the `maxRetries` option to configure or disable this:
 

src/core.ts

@@ -463,6 +463,9 @@ export abstract class APIClient {
     if (shouldRetryHeader === 'true') return true;
     if (shouldRetryHeader === 'false') return false;
 
+    // Retry on request timeouts.
+    if (response.status === 408) return true;
+
     // Retry on lock timeouts.
     if (response.status === 409) return true;