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go - Golang http request results in EOF errors when making multiple requests successively

I am trying to debug a very unusual error I am receiving for a simple REST library I wrote.

I am using the standard net/http package to make Get, Post, Put, Delete requests but my tests occasionally fail when I make multiple requests successively. My test looks like this:

func TestGetObject(t *testing.T) {
    firebaseRoot := New(firebase_url)
    body, err := firebaseRoot.Get("1")
    if err != nil {
        t.Errorf("Error: %s", err)
    }
    t.Logf("%q", body)
}  

func TestPushObject(t *testing.T) {
    firebaseRoot := New(firebase_url)
    msg := Message{"testing", "1..2..3"}
    body, err := firebaseRoot.Push("/", msg)
    if err != nil {
        t.Errorf("Error: %s", err)
    }
    t.Logf("%q", body)
}

And I am making the request like this:

// Send HTTP Request, return data
func (f *firebaseRoot) SendRequest(method string, path string, body io.Reader) ([]byte, error) {
url := f.BuildURL(path)

// create a request
req, err := http.NewRequest(method, url, body)
if err != nil {
    return nil, err
}

// send JSON to firebase
resp, err := http.DefaultClient.Do(req)
if err != nil {
    return nil, err
}

if resp.StatusCode != http.StatusOK {
    return nil, fmt.Errorf("Bad HTTP Response: %v", resp.Status)
}

defer resp.Body.Close()
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
    return nil, err
}

return b, nil
} 

Sometimes it works, but most of the time I get 1 or 2 failures:

--- FAIL: TestGetObject (0.00 seconds)
firebase_test.go:53: Error: Get https://go-firebase-test.firebaseio.com/1.json: EOF
firebase_test.go:55: ""

--- FAIL: TestPushObject (0.00 seconds)
firebase_test.go:63: Error: Post https://go-firebase-test.firebaseio.com/.json: EOF
firebase_test.go:65: ""
FAIL
exit status 1
FAIL    github.com/chourobin/go.firebase    3.422s

The failures happen when I make more than 1 request. If I comment out everything except for the PUT request, the tests consistently pass. Once I include a second test, such as GET, one or the other fails (sometimes both pass).

Any help appreciated, and thanks!

Link to the source: http://github.com/chourobin/go.firebase

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