fix(server): silence recovered download stalls

Author: louistiti

server/src/helpers/network-helper.ts

@@ -990,9 +990,11 @@ export class NetworkHelper {
               throw error
             }
 
-            LogHelper.warning(
-              `Download range ${range.start}-${range.end} failed at byte ${writePosition}; retrying: ${String(error)}`
-            )
+            if (!madeProgress) {
+              LogHelper.warning(
+                `Download connection made no progress; retrying (${consecutiveNoProgressFailures}/${retryOptions.retries}): ${String(error)}`
+              )
+            }
             await this.sleep(
               this.getRetryDelay(
                 Math.max(1, consecutiveNoProgressFailures),

test/core/unit/network-helper.spec.ts

@@ -195,7 +195,9 @@ describe('NetworkHelper', () => {
       `${destinationPath}.download`,
       Buffer.alloc(existingPrefixBytes, 'b')
     )
-    vi.spyOn(LogHelper, 'warning').mockImplementation(() => {})
+    const warningSpy = vi
+      .spyOn(LogHelper, 'warning')
+      .mockImplementation(() => {})
 
     const modelURL = `http://127.0.0.1:${address.port}/model.gguf`
     const downloadOptions = {
@@ -246,6 +248,7 @@ describe('NetworkHelper', () => {
     )
     expect(fs.statSync(destinationPath).size).toBe(totalBytes)
     expect(fs.existsSync(`${destinationPath}.download.state.json`)).toBe(false)
+    expect(warningSpy).not.toHaveBeenCalled()
 
     const fileHandle = fs.openSync(destinationPath, 'r')
     const sample = Buffer.alloc(3)