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https://github.com/tinygo-org/net.git
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Scott Feldman
693edae782
This PR adds a network device driver model called netdev. There will be a companion PR for TinyGo drivers to update the netdev drivers and network examples. This PR covers the core "net" package. An RFC for the work is here: #tinygo-org/drivers#487. Some things have changed from the RFC, but nothing major. The "net" package is a partial port of Go's "net" package, version 1.19.3. The src/net/README file has details on what is modified from Go's "net" package. Most "net" features are working as they would in normal Go. TCP/UDP/TLS protocol support is there. As well as HTTP client and server support. Standard Go network packages such as golang.org/x/net/websockets and Paho MQTT client work as-is. Other packages are likely to work as-is. Testing results are here (https://docs.google.com/spreadsheets/d/e/2PACX-1vT0cCjBvwXf9HJf6aJV2Sw198F2ief02gmbMV0sQocKT4y4RpfKv3dh6Jyew8lQW64FouZ8GwA2yjxI/pubhtml?gid=1013173032&single=true).
47 lines
1.6 KiB
Go
47 lines
1.6 KiB
Go
package net
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import (
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"time"
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)
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// netdev is the current netdev, set by the application with useNetdev()
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var netdev netdever
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// (useNetdev is go:linkname'd from tinygo/drivers package)
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func useNetdev(dev netdever) {
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netdev = dev
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}
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// Netdev is TinyGo's network device driver model. Network drivers implement
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// the netdever interface, providing a common network I/O interface to TinyGo's
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// "net" package. The interface is modeled after the BSD socket interface.
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// net.Conn implementations (TCPConn, UDPConn, and TLSConn) use the netdev
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// interface for device I/O access.
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//
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// A netdever is passed to the "net" package using net.useNetdev().
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//
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// Just like a net.Conn, multiple goroutines may invoke methods on a netdever
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// simultaneously.
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//
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// NOTE: The netdever interface is mirrored in drivers/netdev.go.
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// NOTE: If making changes to this interface, mirror the changes in
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// NOTE: drivers/netdev.go, and visa-versa.
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type netdever interface {
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// GetHostByName returns the IP address of either a hostname or IPv4
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// address in standard dot notation
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GetHostByName(name string) (IP, error)
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// Berkely Sockets-like interface, Go-ified. See man page for socket(2), etc.
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Socket(domain int, stype int, protocol int) (int, error)
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Bind(sockfd int, ip IP, port int) error
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Connect(sockfd int, host string, ip IP, port int) error
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Listen(sockfd int, backlog int) error
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Accept(sockfd int, ip IP, port int) (int, error)
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Send(sockfd int, buf []byte, flags int, timeout time.Duration) (int, error)
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Recv(sockfd int, buf []byte, flags int, timeout time.Duration) (int, error)
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Close(sockfd int) error
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SetSockOpt(sockfd int, level int, opt int, value interface{}) error
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}
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