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package internal | ||
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import ( | ||
"fmt" | ||
"net" | ||
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"github.com/codecrafters-io/tester-utils/test_case_harness" | ||
) | ||
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func testMagnetSendMetadata(stageHarness *test_case_harness.TestCaseHarness) error { | ||
initRandom() | ||
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logger := stageHarness.Logger | ||
executable := stageHarness.Executable | ||
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magnetLink := randomMagnetLink() | ||
params, err := NewMagnetTestParams(magnetLink, logger) | ||
if err != nil { | ||
return err | ||
} | ||
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go listenAndServeTrackerResponse(params.toTrackerParams()) | ||
go waitAndHandlePeerConnection(params.toPeerConnectionParams(), handleSendMetadata) | ||
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logger.Infof("Running ./your_bittorrent.sh magnet_info %q", params.MagnetUrlEncoded) | ||
result, err := executable.Run("magnet_info", params.MagnetUrlEncoded) | ||
if err != nil { | ||
return err | ||
} | ||
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if err = assertExitCode(result, 0); err != nil { | ||
return err | ||
} | ||
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expected := fmt.Sprintf("Tracker URL: http://%s/announce", params.TrackerAddress) | ||
if err = assertStdoutContains(result, expected); err != nil { | ||
return err | ||
} | ||
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expected = fmt.Sprintf("Length: %d", params.MagnetLinkInfo.FileLengthBytes) | ||
if err = assertStdoutContains(result, expected); err != nil { | ||
return err | ||
} | ||
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expected = fmt.Sprintf("Info Hash: %s", params.MagnetLinkInfo.InfoHashStr) | ||
if err = assertStdoutContains(result, expected); err != nil { | ||
return err | ||
} | ||
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expected = fmt.Sprintf("Piece Length: %d", params.MagnetLinkInfo.PieceLengthBytes) | ||
if err = assertStdoutContains(result, expected); err != nil { | ||
return err | ||
} | ||
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pieceHashes := params.MagnetLinkInfo.PieceHashes | ||
for _, pieceHash := range pieceHashes { | ||
if err = assertStdoutContains(result, pieceHash); err != nil { | ||
return err | ||
} | ||
} | ||
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return nil | ||
} | ||
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func handleSendMetadata(conn net.Conn, params PeerConnectionParams) { | ||
defer conn.Close() | ||
logger := params.logger | ||
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if err := receiveAndSendHandshake(conn, params); err != nil { | ||
return | ||
} | ||
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if err := sendBitfieldMessage(conn, params.bitfield, logger); err != nil { | ||
return | ||
} | ||
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if err := sendExtensionHandshake(conn, params.myMetadataExtensionID, params.metadataSizeBytes, logger); err != nil { | ||
return | ||
} | ||
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theirMetadataExtensionID, err := receiveAndAssertExtensionHandshake(conn, logger) | ||
if err != nil { | ||
return | ||
} | ||
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if err := readMetadataRequest(conn, logger); err != nil { | ||
return | ||
} | ||
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if err := sendMetadataResponse(conn, theirMetadataExtensionID, params.magnetLink, logger); err != nil { | ||
logger.Errorln(err.Error()) | ||
return | ||
} | ||
} | ||
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