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fix: preserve PERPLEXITY_BASE_URL query parameters when joining paths #155

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fix: preserve PERPLEXITY_BASE_URL query parameters when joining paths #155

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21 changes: 21 additions & 0 deletions src/index.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -579,6 +579,27 @@ describe("Perplexity MCP Server", () => {
}
});

it("should keep PERPLEXITY_BASE_URL path and query on the agent path", async () => {
vi.resetModules();
process.env.PERPLEXITY_BASE_URL = "https://proxy.example.com/api/?key=x";
try {
const serverModule = await import("./server.js");
global.fetch = vi
.fn()
.mockResolvedValue(sseResponse([completedEvent("ok")]));

await serverModule.performAgentResponse(TEST_MESSAGES, "fast");

expect(global.fetch).toHaveBeenCalledWith(
"https://proxy.example.com/api/v1/agent?key=x",
expect.anything()
);
} finally {
delete process.env.PERPLEXITY_BASE_URL;
vi.resetModules();
}
});

it("should skip malformed stream chunks and still complete", async () => {
const payload =
"data: this-is-not-json\n\n" +
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4 changes: 3 additions & 1 deletion src/server.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,9 @@ async function makeApiRequest(
// Read timeout fresh each time to respect env var changes
const TIMEOUT_MS = parseInt(process.env.PERPLEXITY_TIMEOUT_MS || "300000", 10);

const url = new URL(`${PERPLEXITY_BASE_URL}/${endpoint}`);
// Append to the base path so a query string in the base URL is preserved.
const url = new URL(PERPLEXITY_BASE_URL);
url.pathname = `${url.pathname.replace(/\/$/, "")}/${endpoint}`;
const controller = new AbortController();
const timeoutId = setTimeout(() => controller.abort(), TIMEOUT_MS);
// An abort from the caller's signal also tears down an in-flight body stream.
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