mirror of
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).
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// TINYGO: The following is copied and modified from Go 1.19.3 official implementation.
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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// BUG(mikio): On every POSIX platform, reads from the "ip4" network
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// using the ReadFrom or ReadFromIP method might not return a complete
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// IPv4 packet, including its header, even if there is space
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// available. This can occur even in cases where Read or ReadMsgIP
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// could return a complete packet. For this reason, it is recommended
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// that you do not use these methods if it is important to receive a
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// full packet.
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//
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// The Go 1 compatibility guidelines make it impossible for us to
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// change the behavior of these methods; use Read or ReadMsgIP
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// instead.
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// BUG(mikio): On JS and Plan 9, methods and functions related
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// to IPConn are not implemented.
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// BUG(mikio): On Windows, the File method of IPConn is not
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// implemented.
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// IPAddr represents the address of an IP end point.
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type IPAddr struct {
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IP IP
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Zone string // IPv6 scoped addressing zone
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}
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// Network returns the address's network name, "ip".
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func (a *IPAddr) Network() string { return "ip" }
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func (a *IPAddr) String() string {
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if a == nil {
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return "<nil>"
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}
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ip := ipEmptyString(a.IP)
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if a.Zone != "" {
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return ip + "%" + a.Zone
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}
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return ip
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}
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func (a *IPAddr) isWildcard() bool {
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if a == nil || a.IP == nil {
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return true
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}
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return a.IP.IsUnspecified()
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}
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func (a *IPAddr) opAddr() Addr {
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if a == nil {
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return nil
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}
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return a
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}
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