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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libgo/go/http/dump.go
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Diffstat (limited to 'libgo/go/http/dump.go')
-rw-r--r--libgo/go/http/dump.go76
1 files changed, 76 insertions, 0 deletions
diff --git a/libgo/go/http/dump.go b/libgo/go/http/dump.go
new file mode 100644
index 000000000..73ac97973
--- /dev/null
+++ b/libgo/go/http/dump.go
@@ -0,0 +1,76 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package http
+
+import (
+ "bytes"
+ "io"
+ "os"
+)
+
+
+// One of the copies, say from b to r2, could be avoided by using a more
+// elaborate trick where the other copy is made during Request/Response.Write.
+// This would complicate things too much, given that these functions are for
+// debugging only.
+func drainBody(b io.ReadCloser) (r1, r2 io.ReadCloser, err os.Error) {
+ var buf bytes.Buffer
+ if _, err = buf.ReadFrom(b); err != nil {
+ return nil, nil, err
+ }
+ if err = b.Close(); err != nil {
+ return nil, nil, err
+ }
+ return nopCloser{&buf}, nopCloser{bytes.NewBuffer(buf.Bytes())}, nil
+}
+
+// DumpRequest returns the wire representation of req,
+// optionally including the request body, for debugging.
+// DumpRequest is semantically a no-op, but in order to
+// dump the body, it reads the body data into memory and
+// changes req.Body to refer to the in-memory copy.
+func DumpRequest(req *Request, body bool) (dump []byte, err os.Error) {
+ var b bytes.Buffer
+ save := req.Body
+ if !body || req.Body == nil {
+ req.Body = nil
+ } else {
+ save, req.Body, err = drainBody(req.Body)
+ if err != nil {
+ return
+ }
+ }
+ err = req.Write(&b)
+ req.Body = save
+ if err != nil {
+ return
+ }
+ dump = b.Bytes()
+ return
+}
+
+// DumpResponse is like DumpRequest but dumps a response.
+func DumpResponse(resp *Response, body bool) (dump []byte, err os.Error) {
+ var b bytes.Buffer
+ save := resp.Body
+ savecl := resp.ContentLength
+ if !body || resp.Body == nil {
+ resp.Body = nil
+ resp.ContentLength = 0
+ } else {
+ save, resp.Body, err = drainBody(resp.Body)
+ if err != nil {
+ return
+ }
+ }
+ err = resp.Write(&b)
+ resp.Body = save
+ resp.ContentLength = savecl
+ if err != nil {
+ return
+ }
+ dump = b.Bytes()
+ return
+}