PHP Classes

File: socket.go

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  Classes of Wolfy-J   goridge   socket.go   Download  
File: socket.go
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: goridge
Run Golang code from PHP calling its RPC server
Author: By
Last change: error handling in receive
Minor receive performance improvement
Date: 5 years ago
Size: 1,731 bytes
 

Contents

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package goridge import ( "io" "sync" ) // SocketRelay communicates with underlying process using sockets (TPC or Unix). type SocketRelay struct { // How many bytes to write/read at once. BufferSize uint64 muw sync.Mutex // concurrent write mur sync.Mutex // concurrent read rwc io.ReadWriteCloser } // NewSocketRelay creates new socket based data relay. func NewSocketRelay(rwc io.ReadWriteCloser) *SocketRelay { return &SocketRelay{BufferSize: BufferSize, rwc: rwc} } // Send signed (prefixed) data to PHP process. func (rl *SocketRelay) Send(data []byte, flags byte) (err error) { rl.muw.Lock() defer rl.muw.Unlock() prefix := NewPrefix().WithFlags(flags).WithSize(uint64(len(data))) if _, err := rl.rwc.Write(prefix[:]); err != nil { return err } if _, err := rl.rwc.Write(data); err != nil { return err } return nil } // Receive data from the underlying process and returns associated prefix or error. func (rl *SocketRelay) Receive() (data []byte, p Prefix, err error) { rl.mur.Lock() defer rl.mur.Unlock() defer func() { if rErr, ok := recover().(error); ok { err = rErr } }() if _, err := rl.rwc.Read(p[:]); err != nil { return nil, p, err } if !p.HasPayload() { return nil, p, nil } leftBytes := p.Size() data = make([]byte, 0, leftBytes) buffer := make([]byte, min(leftBytes, rl.BufferSize)) for { if n, err := rl.rwc.Read(buffer); err == nil { data = append(data, buffer[:n]...) leftBytes -= uint64(n) } else { return nil, p, err } if leftBytes == 0 { break } } return } // Close the connection. func (rl *SocketRelay) Close() error { rl.muw.Lock() rl.mur.Lock() defer rl.muw.Unlock() defer rl.mur.Unlock() return rl.rwc.Close() }