interface – many implementations • We can’t just • Read/write structs • Interfaces to different transports differ • Some want zero-copy • Version skew • Some want guarantees that some fields are always

delayed calls (timeouts). • Creating client and server transports for various kinds of communication. • Launching subprocesses and the associated transports for communication with an external program. • Delegating Library Reference, 发布 3.6.15 18.5.4 Transports and protocols (callback based API) Source code: Lib/asyncio/transports.py Source code: Lib/asyncio/protocols.py 传输 Transports are classes provided by asyncio protocol can then call the transport’s methods for various purposes. asyncio currently implements transports for TCP, UDP, SSL, and subprocess pipes. The methods available on a transport depend on the transport’s

delayed calls (timeouts). • Creating client and server transports for various kinds of communication. • Launching subprocesses and the associated transports for communication with an external program. • Delegating Library Reference, 发布 3.6.15 18.5.4 Transports and protocols (callback based API) Source code: Lib/asyncio/transports.py Source code: Lib/asyncio/protocols.py 传输 Transports are classes provided by asyncio protocol can then call the transport’s methods for various purposes. asyncio currently implements transports for TCP, UDP, SSL, and subprocess pipes. The methods available on a transport depend on the transport’s

purposes.CHAPTER 25. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 330 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 25. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 330 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 26. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 351 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) �→ Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 26. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 351 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) �→ Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 26. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 351 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) �→ Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 26. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 354 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) �→ Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return

purposes.CHAPTER 26. MULTI-PROCESSING AND DISTRIBUTED COMPUTING 355 Cluster Managers with Custom Transports Replacing the default TCP/IP all-to-all socket connections with a custom transport layer is a directly without any aware- ness of 0MQ being used as the transport layer. When using custom transports: • Julia workers must NOT be started with --worker. Starting with --worker will result in the config::WorkerConfig) -> (instrm::IO, outstrm::IO) �→ Implemented by cluster managers using custom transports. It should establish a logical connection to worker with id pid, specified by config and return