diff --git a/cmd/tcptows/tcptows.go b/cmd/tcptows/tcptows.go new file mode 100644 index 0000000..28971cf --- /dev/null +++ b/cmd/tcptows/tcptows.go @@ -0,0 +1,74 @@ +package main + +import ( + "io" + "log" + "net" + + "github.com/gorilla/websocket" +) + +func handleConnection(conn net.Conn, wsURL string) { + defer conn.Close() + + wsConn, _, err := websocket.DefaultDialer.Dial(wsURL, nil) + if err != nil { + log.Println("WebSocket connection error:", err) + return + } + defer wsConn.Close() + + go func() { + for { + _, message, err := wsConn.ReadMessage() + if err != nil { + log.Println("WebSocket read error:", err) + return + } + _, err = conn.Write(message) + if err != nil { + log.Println("TCP write error:", err) + return + } + } + }() + + for { + buffer := make([]byte, 1024) + n, err := conn.Read(buffer) + if err != nil { + if err != io.EOF { + log.Println("TCP read error:", err) + } + return + } + err = wsConn.WriteMessage(websocket.BinaryMessage, buffer[:n]) + if err != nil { + log.Println("WebSocket write error:", err) + return + } + } +} + +func main() { + tcpPort := "7000" + wsURL := "ws://localhost:8000/ws" // Replace with your WebSocket server URL + + listener, err := net.Listen("tcp", ":"+tcpPort) + if err != nil { + log.Fatal(err) + } + defer listener.Close() + + log.Printf("TCP server listening on port %s", tcpPort) + log.Printf("Forwarding connections to WebSocket server at %s", wsURL) + + for { + conn, err := listener.Accept() + if err != nil { + log.Println(err) + continue + } + go handleConnection(conn, wsURL) + } +} diff --git a/cmd/wstotcp/wstotcp.go b/cmd/wstotcp/wstotcp.go new file mode 100644 index 0000000..15c3f43 --- /dev/null +++ b/cmd/wstotcp/wstotcp.go @@ -0,0 +1,86 @@ +package main + +import ( + "fmt" + "log" + "net" + "net/http" + + "github.com/gorilla/websocket" +) + +var upgrader = websocket.Upgrader{ + ReadBufferSize: 1024, + WriteBufferSize: 1024, +} + +var tcpConn net.Conn + +func main() { + // Connect to TCP server + var err error + tcpConn, err = net.Dial("tcp", "localhost:2222") // Replace with your TCP server address + if err != nil { + log.Fatal("Error connecting to TCP server:", err) + } + defer tcpConn.Close() + + // Set up WebSocket handler + http.HandleFunc("/ws", handleWebSocket) + + // Start HTTP server + fmt.Println("WebSocket server listening on :8000") + log.Fatal(http.ListenAndServe(":8000", nil)) +} + +func handleWebSocket(w http.ResponseWriter, r *http.Request) { + conn, err := upgrader.Upgrade(w, r, nil) + if err != nil { + log.Println("Error upgrading to WebSocket:", err) + return + } + defer conn.Close() + + waitChannel := make(chan bool) + + // Read message from WebSocket + go func() { + defer func() { + waitChannel <- true + }() + for { + _, message, err := conn.ReadMessage() + if err != nil { + log.Println("Error reading WebSocket message:", err) + return + } + _, err = tcpConn.Write(message) + if err != nil { + log.Println("Error sending message to TCP server:", err) + return + } + } + }() + + go func() { + defer func() { + waitChannel <- true + }() + for { + buffer := make([]byte, 1024) + n, err := tcpConn.Read(buffer) + if err != nil { + log.Println("Error reading from TCP server:", err) + return + } + err = conn.WriteMessage(websocket.TextMessage, buffer[:n]) + if err != nil { + log.Println("Error writing WebSocket message:", err) + return + } + } + }() + + <-waitChannel + log.Println("Connection closed") +} diff --git a/go.mod b/go.mod index bb6174d..5c5eb1b 100755 --- a/go.mod +++ b/go.mod @@ -5,6 +5,7 @@ go 1.18 require ( github.com/creack/pty v1.1.21 github.com/gliderlabs/ssh v0.3.7 + github.com/gorilla/websocket v1.5.3 github.com/pkg/sftp v1.13.6 golang.org/x/crypto v0.25.0 golang.org/x/term v0.22.0 diff --git a/go.sum b/go.sum index 3b5301e..4762ea3 100755 --- a/go.sum +++ b/go.sum @@ -3,17 +3,22 @@ github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuW github.com/creack/pty v1.1.21 h1:1/QdRyBaHHJP61QkWMXlOIBfsgdDeeKfK8SYVUWJKf0= github.com/creack/pty v1.1.21/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/gliderlabs/ssh v0.3.7 h1:iV3Bqi942d9huXnzEF2Mt+CY9gLu8DNM4Obd+8bODRE= github.com/gliderlabs/ssh v0.3.7/go.mod h1:zpHEXBstFnQYtGnB8k8kQLol82umzn/2/snG7alWVD8= +github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg= +github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8= github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg= github.com/pkg/sftp v1.13.6 h1:JFZT4XbOU7l77xGSpOdW+pwIMqP044IyjXX6FGyEKFo= github.com/pkg/sftp v1.13.6/go.mod h1:tz1ryNURKu77RL+GuCzmoJYxQczL3wLNNpPWagdg4Qk= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk= github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= @@ -51,4 +56,5 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=