113 lines
2.9 KiB
Go
113 lines
2.9 KiB
Go
package main
|
|
|
|
import (
|
|
"github.com/goplus/llgo/c"
|
|
"github.com/goplus/llgo/c/libuv"
|
|
"github.com/goplus/llgo/c/net"
|
|
)
|
|
|
|
var DEFAULT_PORT c.Int = 8080
|
|
var DEFAULT_BACKLOG c.Int = 128
|
|
|
|
type WriteReq struct {
|
|
Req libuv.Write
|
|
Buf libuv.Buf
|
|
}
|
|
|
|
func main() {
|
|
// Initialize the default event loop
|
|
var loop = libuv.DefaultLoop()
|
|
|
|
// Initialize a TCP server
|
|
server := &libuv.Tcp{}
|
|
libuv.InitTcp(loop, server)
|
|
|
|
// Set up the address to bind the server to
|
|
var addr net.SockaddrIn
|
|
libuv.Ip4Addr(c.Str("0.0.0.0"), DEFAULT_PORT, &addr)
|
|
c.Printf(c.Str("Listening on %s:%d\n"), c.Str("0.0.0.0"), DEFAULT_PORT)
|
|
|
|
// Bind the server to the specified address and port
|
|
server.Bind((*net.SockAddr)(c.Pointer(&addr)), 0)
|
|
res := (*libuv.Stream)(server).Listen(DEFAULT_BACKLOG, OnNewConnection)
|
|
if res != 0 {
|
|
c.Fprintf(c.Stderr, c.Str("Listen error: %s\n"), libuv.Strerror(libuv.Errno(res)))
|
|
return
|
|
}
|
|
|
|
// Start listening for incoming connections
|
|
loop.Run(libuv.RUN_DEFAULT)
|
|
}
|
|
|
|
func FreeWriteReq(req *libuv.Write) {
|
|
wr := (*WriteReq)(c.Pointer(req))
|
|
// Free the buffer base.
|
|
if wr.Buf.Base != nil {
|
|
c.Free(c.Pointer(wr.Buf.Base))
|
|
wr.Buf.Base = nil
|
|
}
|
|
}
|
|
|
|
func AllocBuffer(handle *libuv.Handle, suggestedSize uintptr, buf *libuv.Buf) {
|
|
// Allocate memory for the buffer based on the suggested size.
|
|
buf.Base = (*c.Char)(c.Malloc(suggestedSize))
|
|
buf.Len = suggestedSize
|
|
}
|
|
|
|
func EchoWrite(req *libuv.Write, status c.Int) {
|
|
if status != 0 {
|
|
c.Fprintf(c.Stderr, c.Str("Write error: %s\n"), libuv.Strerror(libuv.Errno(status)))
|
|
}
|
|
FreeWriteReq(req)
|
|
}
|
|
|
|
func EchoRead(client *libuv.Stream, nread c.Long, buf *libuv.Buf) {
|
|
if nread > 0 {
|
|
req := new(WriteReq)
|
|
// Initialize the buffer with the data read.
|
|
req.Buf = libuv.InitBuf(buf.Base, c.Uint(nread))
|
|
// Write the data back to the client.
|
|
req.Req.Write(client, &req.Buf, 1, EchoWrite)
|
|
return
|
|
}
|
|
if nread < 0 {
|
|
// Handle read errors and EOF.
|
|
if (libuv.Errno)(nread) != libuv.EOF {
|
|
c.Fprintf(c.Stderr, c.Str("Read error: %s\n"), libuv.Strerror(libuv.Errno(nread)))
|
|
}
|
|
(*libuv.Handle)(c.Pointer(client)).Close(nil)
|
|
}
|
|
// Free the buffer if it's no longer needed.
|
|
if buf.Base != nil {
|
|
c.Free(c.Pointer(buf.Base))
|
|
}
|
|
}
|
|
|
|
func OnNewConnection(server *libuv.Stream, status c.Int) {
|
|
if status < 0 {
|
|
c.Fprintf(c.Stderr, c.Str("New connection error: %s\n"), libuv.Strerror(libuv.Errno(status)))
|
|
return
|
|
}
|
|
|
|
// Allocate memory for a new client.
|
|
client := &libuv.Tcp{}
|
|
|
|
if client == nil {
|
|
c.Fprintf(c.Stderr, c.Str("Failed to allocate memory for client\n"))
|
|
return
|
|
}
|
|
|
|
// Initialize the client TCP handle.
|
|
if libuv.InitTcp(libuv.DefaultLoop(), client) < 0 {
|
|
c.Fprintf(c.Stderr, c.Str("Failed to initialize client\n"))
|
|
return
|
|
}
|
|
|
|
// Accept the new connection and start reading data.
|
|
if server.Accept((*libuv.Stream)(client)) == 0 {
|
|
(*libuv.Stream)(client).StartRead(AllocBuffer, EchoRead)
|
|
} else {
|
|
(*libuv.Handle)(c.Pointer(client)).Close(nil)
|
|
}
|
|
}
|