});
            fail("Should have thrown exception");
        } catch (CIFSException e) {
            // Expected - failure in HALF_OPEN should reopen circuit
        }

        assertEquals(State.OPEN, circuitBreaker.getState(), "Circuit should reopen after failure in HALF_OPEN");
    }

    @Test
    public void testStateTransitionMetrics() throws Exception {

Şuradan kontrol edebilirsiniz: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs):

<img src="/img/tutorial/behind-a-proxy/image01.png">

Ancak docs UI'yi proxy üzerinden, `9999` portuyla, `/api/v1/docs` altında "resmi" URL'den açarsak doğru çalışır! 🎉

Şuradan kontrol edebilirsiniz: [http://127.0.0.1:9999/api/v1/docs](http://127.0.0.1:9999/api/v1/docs):

<img src="/img/tutorial/behind-a-proxy/image02.png">

Tam istediğimiz gibi. ✔️

        verify(tree, atLeastOnce()).release();

        // Re-prepare state for second branch: not open but handle set
        when(fileHandle.isValid()).thenReturn(false);
        // Need to reopen logic to set handle again
        // Reset open flag by reconstructing target
        target = new SmbPipeHandleImpl(pipe);

        target.ensureOpen(); // handle present but invalid per isValid=false

        // Open the circuit
        circuitBreaker.tripBreaker();

        // Wait for timeout
        Thread.sleep(150);

        // Single failure in HALF_OPEN should reopen
        try {
            circuitBreaker.call(() -> {
                throw new RuntimeException("Test failure");
            });
        } catch (Exception e) {
            // Expected
        }

        when(mockFileHandle.getFileId()).thenReturn(new byte[16]);
        when(mockFileHandle.acquire()).thenReturn(mockFileHandle);

        // Mock for ensureOpen to reopen file
        when(mockFile.openUnshared(anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(mockFileHandle);

        when(mockTreeHandle.send(any(Smb2WriteRequest.class), any())).thenReturn(mockWriteResponse);

                            ioff += maxChunkSize;
                        }

                        if (dfd == null || !dfd.isValid()) {
                            // don't reopen the file for every round if it's not necessary, keep the lock
                            dfd = openCopyTargetFile(dest, src.getAttributes(), !write);
                        }

        }
        file.open(openFlags, access | SmbConstants.FILE_WRITE_DATA, SmbFile.ATTR_NORMAL, 0);
        this.openFlags &= ~(SmbFile.O_CREAT | SmbFile.O_TRUNC); /* in case close and reopen */
        writeSize = file.tree.session.transport.snd_buf_size - 70;

        useNTSmbs = file.tree.session.transport.hasCapability(SmbConstants.CAP_NT_SMBS);
        if (useNTSmbs) {

            this.writeSizeFile = sendBufferSize;
            return;
        }

        this.openFlags &= ~(SmbConstants.O_CREAT | SmbConstants.O_TRUNC); /* in case we close and reopen */
        this.writeSize = sendBufferSize - 70;

        this.useNTSmbs = th.hasCapability(SmbConstants.CAP_NT_SMBS);
        if (!this.useNTSmbs) {
            log.debug("No support for NT SMBs");
        }

                // Create reconnect context
                DurableHandleReconnect reconnectCtx = 
                    new DurableHandleReconnect(info.fileId);
                
                // Attempt to reopen with reconnect context
                Smb2CreateRequest createReq = new Smb2CreateRequest();
                createReq.setPath(info.path);
                createReq.addCreateContext(reconnectCtx);
                

Deploying to FastAPI Cloud...

✅ Deployment successful!

🐔 Ready the chicken! Your app is ready at https://myapp.fastapicloud.dev
```

</div>

Hepsi bu! Artık uygulamanıza bu URL'den erişebilirsiniz. ✨

#### FastAPI Cloud hakkında { #about-fastapi-cloud }

**[FastAPI Cloud](https://fastapicloud.com)**, **FastAPI**'ın arkasındaki aynı yazar ve ekip tarafından geliştirilmiştir.