func TestProxiedTCPConnIOTimeout(t *testing.T) {
// start the proxy server
proxyServer, err := net.Listen("tcp", proxyAddr)
checkUnexpected(err, "Error opening proxy server port", t)
defer proxyServer.Close()
// start the remote server
remoteServer, err := net.Listen("tcp", remoteAddr)
checkUnexpected(err, "Error opening remote server port", t)
defer remoteServer.Close()
// open connection to proxy
proxyClient, err := net.Dial("tcp", proxyAddr)
checkUnexpected(err, "Error opening proxy client connection", t)
defer proxyClient.Close()
// accept connection to proxy
clientConn, err := proxyServer.Accept()
checkUnexpected(err, "Error accepting proxy client connection", t)
defer clientConn.Close()
// proxy the connection
p := proxy.ProxiedTCPConn{
LocalConn: clientConn,
RemoteAddr: remoteAddr,
ConnectTimeout: 10 * time.Second,
IOTimeout: 1 * time.Second,
}
go func() {
err := p.Proxy()
if err == nil {
t.Fatalf("Timeout error not caught")
}
}()
// accept the proxied connection
remoteConn, err := remoteServer.Accept()
checkUnexpected(err, "Error accepting proxied connection", t)
defer remoteConn.Close()
// write to the client
testData := "test data"
_, err = proxyClient.Write([]byte(testData))
checkUnexpected(err, "Error writing to client", t)
// now we wait for the timeout
time.Sleep(2 * time.Second)
}
func TestProxiedTCPConn(t *testing.T) {
// start the proxy server
proxyServer, err := net.Listen("tcp", proxyAddr)
checkUnexpected(err, "Error opening proxy server port", t)
defer proxyServer.Close()
// start the remote server
remoteServer, err := net.Listen("tcp", remoteAddr)
checkUnexpected(err, "Error opening remote server port", t)
defer remoteServer.Close()
// open connection to proxy
proxyClient, err := net.Dial("tcp", proxyAddr)
checkUnexpected(err, "Error opening proxy client connection", t)
defer proxyClient.Close()
// accept connection to proxyj
clientConn, err := proxyServer.Accept()
checkUnexpected(err, "Error accepting proxy client connection", t)
defer clientConn.Close()
// proxy the connection
p := proxy.ProxiedTCPConn{
LocalConn: clientConn,
RemoteAddr: remoteAddr,
ConnectTimeout: 10 * time.Second,
IOTimeout: 10 * time.Second,
}
go func() {
err := p.Proxy()
checkUnexpected(err, "Error proxying connection", t)
}()
// accept the proxied connection
remoteConn, err := remoteServer.Accept()
checkUnexpected(err, "Error accepting proxied connection", t)
defer remoteConn.Close()
// write to the client
testData := "test data"
_, err = proxyClient.Write([]byte(testData))
checkUnexpected(err, "Error writing to client", t)
// check the data on the remote server
buf := make([]byte, 128)
n, err := remoteConn.Read(buf)
checkUnexpected(err, "Error reading from client", t)
data := string(buf[0:n])
if data != testData {
t.Fatalf("Expected %s but got %s", testData, data)
}
// now send a response from the server
testResp := "test response"
_, err = remoteConn.Write([]byte(testResp))
checkUnexpected(err, "Error responding to client", t)
// receive the response on the client
n, err = proxyClient.Read(buf)
checkUnexpected(err, "Error reading response", t)
respData := string(buf[0:n])
if respData != testResp {
t.Fatalf("Expected %s but got %s", testResp, respData)
}
}