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fix: add ?alt=sse to Vertex streaming URL (closes #388) (#409)

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Anurag Saxena
2026-03-26 23:44:11 -04:00
committed by GitHub
parent 2f0fd348c5
commit 5e308e8ff2
1 changed files with 4 additions and 2 deletions
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6
open-sse/executors/vertex.js
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@@ -54,10 +54,12 @@ export class VertexExecutor extends BaseExecutor {
}
// Gemini on Vertex: always use global publishers endpoint
const action = stream ? "streamGenerateContent" : "generateContent";
// ?alt=sse is required for proper SSE streaming (matches every other Gemini executor)
const action = stream ? "streamGenerateContent?alt=sse" : "generateContent";
let url = `https://aiplatform.googleapis.com/v1/publishers/google/models/${model}:${action}`;
if (rawKey) url += `?key=${rawKey}`;
// rawKey goes as a query param; use & because ?alt=sse already starts the query string
if (rawKey) url += `&key=${rawKey}`;
return url;
}