mirror of https://github.com/schollz/croc.git
78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
package comm
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import (
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"net"
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"strings"
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"time"
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"github.com/schollz/croc/src/models"
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)
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// Comm is some basic TCP communication
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type Comm struct {
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connection net.Conn
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}
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// New returns a new comm
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func New(c net.Conn) Comm {
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return Comm{c}
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}
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// Connection returns the net.Conn connection
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func (c Comm) Connection() net.Conn {
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return c.connection
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}
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func (c Comm) Write(b []byte) (int, error) {
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return c.connection.Write(b)
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}
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func (c Comm) Read() (buf []byte, err error) {
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buf = make([]byte, models.WEBSOCKET_BUFFER_SIZE)
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n, err := c.connection.Read(buf)
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buf = buf[:n]
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return
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}
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// Send a message
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func (c Comm) Send(message string) (err error) {
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message = fillString(message, models.TCP_BUFFER_SIZE)
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_, err = c.connection.Write([]byte(message))
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return
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}
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// Receive a message
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func (c Comm) Receive() (s string, err error) {
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messageByte := make([]byte, models.TCP_BUFFER_SIZE)
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err = c.connection.SetReadDeadline(time.Now().Add(60 * time.Minute))
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if err != nil {
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return
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}
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err = c.connection.SetDeadline(time.Now().Add(60 * time.Minute))
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if err != nil {
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return
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}
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err = c.connection.SetWriteDeadline(time.Now().Add(60 * time.Minute))
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if err != nil {
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return
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}
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_, err = c.connection.Read(messageByte)
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if err != nil {
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return
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}
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s = strings.TrimRight(string(messageByte), ":")
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return
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}
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func fillString(returnString string, toLength int) string {
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for {
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lengthString := len(returnString)
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if lengthString < toLength {
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returnString = returnString + ":"
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continue
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}
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break
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}
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return returnString
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}
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