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|
package buffer
import (
"bufio"
"crypto/tls"
"fmt"
"io"
"net"
"net/http"
"net/http/httptest"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/vulcand/oxy/v2/forward"
"github.com/vulcand/oxy/v2/testutils"
"github.com/vulcand/oxy/v2/utils"
)
func TestSimple(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, "hello", string(body))
}
func TestChunkedEncodingSuccess(t *testing.T) {
var reqBody string
var contentLength int64
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
body, err := io.ReadAll(req.Body)
require.NoError(t, err)
reqBody = string(body)
contentLength = req.ContentLength
_, _ = w.Write([]byte("hello"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
conn, err := net.Dial("tcp", testutils.ParseURI(proxy.URL).Host)
require.NoError(t, err)
_, _ = fmt.Fprintf(conn, "POST / HTTP/1.1\r\nHost: 127.0.0.1:8080\r\nTransfer-Encoding: chunked\r\n\r\n4\r\ntest\r\n5\r\ntest1\r\n5\r\ntest2\r\n0\r\n\r\n")
status, err := bufio.NewReader(conn).ReadString('\n')
require.NoError(t, err)
assert.Equal(t, "testtest1test2", reqBody)
assert.Equal(t, "HTTP/1.1 200 OK\r\n", status)
assert.EqualValues(t, len(reqBody), contentLength)
}
func TestChunkedEncodingLimitReached(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr, MemRequestBodyBytes(4), MaxRequestBodyBytes(8))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
conn, err := net.Dial("tcp", testutils.ParseURI(proxy.URL).Host)
require.NoError(t, err)
_, _ = fmt.Fprint(conn, "POST / HTTP/1.1\r\nHost: 127.0.0.1:8080\r\nTransfer-Encoding: chunked\r\n\r\n4\r\ntest\r\n5\r\ntest1\r\n5\r\ntest2\r\n0\r\n\r\n")
status, err := bufio.NewReader(conn).ReadString('\n')
require.NoError(t, err)
assert.Equal(t, "HTTP/1.1 413 Request Entity Too Large\r\n", status)
}
func TestChunkedResponse(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
h := w.(http.Hijacker)
conn, _, _ := h.Hijack()
_, _ = fmt.Fprintf(conn, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n4\r\ntest\r\n5\r\ntest1\r\n5\r\ntest2\r\n0\r\n\r\n")
_ = conn.Close()
})
t.Cleanup(srv.Close)
fwd := forward.New(false)
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, "testtest1test2", string(body))
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, strconv.Itoa(len("testtest1test2")), re.Header.Get("Content-Length"))
}
func TestRequestLimitReached(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr, MaxRequestBodyBytes(4))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL, testutils.Body("this request is too long"))
require.NoError(t, err)
assert.Equal(t, http.StatusRequestEntityTooLarge, re.StatusCode)
}
func TestResponseLimitReached(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello, this response is too large"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr, MaxResponseBodyBytes(4))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusInternalServerError, re.StatusCode)
}
func TestFileStreamingResponse(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello, this response is too large to fit in memory"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr, MemResponseBodyBytes(4))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, "hello, this response is too large to fit in memory", string(body))
}
func TestCustomErrorHandler(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello, this response is too large"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
errHandler := utils.ErrorHandlerFunc(func(w http.ResponseWriter, req *http.Request, err error) {
w.WriteHeader(http.StatusTeapot)
_, _ = w.Write([]byte(http.StatusText(http.StatusTeapot)))
})
st, err := New(rdr, MaxResponseBodyBytes(4), ErrorHandler(errHandler))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusTeapot, re.StatusCode)
}
func TestNotModified(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(http.StatusNotModified)
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusNotModified, re.StatusCode)
}
func TestNoBody(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(http.StatusOK)
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
}
// Make sure that stream handler preserves TLS settings.
func TestPreservesTLS(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(http.StatusOK)
_, _ = w.Write([]byte("ok"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
var cs *tls.ConnectionState
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
cs = req.TLS
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewUnstartedServer(st)
proxy.StartTLS()
t.Cleanup(proxy.Close)
re, _, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.NotNil(t, cs)
}
func TestNotNilBody(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
_, _ = w.Write([]byte("hello"))
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
// During a request check if the request body is no nil before sending to the next middleware
// Because we can send a POST request without body
assert.NotNil(t, req.Body)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr, MaxRequestBodyBytes(10))
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, "hello", string(body))
re, body, err = testutils.Post(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, "hello", string(body))
}
func TestGRPCErrorResponse(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Grpc-Status", "10" /* ABORTED */)
w.WriteHeader(http.StatusOK)
// To skip the "Content-Length" header.
w.(http.Flusher).Flush()
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Empty(t, body)
}
func TestGRPCOKResponse(t *testing.T) {
srv := testutils.NewHandler(func(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Grpc-Status", "0" /* OK */)
_, _ = w.Write([]byte("grpc-body"))
w.WriteHeader(http.StatusOK)
// To skip the "Content-Length" header.
w.(http.Flusher).Flush()
})
t.Cleanup(srv.Close)
// forwarder will proxy the request to whatever destination
fwd := forward.New(false)
// this is our redirect to server
rdr := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
req.URL = testutils.ParseURI(srv.URL)
fwd.ServeHTTP(w, req)
})
// stream handler will forward requests to redirect
st, err := New(rdr)
require.NoError(t, err)
proxy := httptest.NewServer(st)
t.Cleanup(proxy.Close)
re, body, err := testutils.Get(proxy.URL)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, re.StatusCode)
assert.Equal(t, "grpc-body", string(body))
}
|
