swarm: plan bee for content storage and distribution on web3

This change imports the Swarm protocol codebase. Compared to the 'swarm'
branch, a few mostly cosmetic changes had to be made:

* The various redundant log message prefixes are gone.
* All files now have LGPLv3 license headers.
* Minor code changes were needed to please go vet and make the tests
  pass on Windows.
* Further changes were required to adapt to the go-ethereum develop
  branch and its new Go APIs.

Some code has not (yet) been brought over:

* swarm/cmd/bzzhash: will reappear as cmd/bzzhash later
* swarm/cmd/bzzup.sh: will be reimplemented in cmd/bzzup
* swarm/cmd/makegenesis: will reappear somehow
* swarm/examples/album: will move to a separate repository
* swarm/examples/filemanager: ditto
* swarm/examples/files: will not be merged
* swarm/test/*: will not be merged
* swarm/services/swear: will reappear as contracts/swear when needed

1 files changed, 68 insertions, 0 deletions

diff --git a/swarm/api/http/roundtripper_test.go b/swarm/api/http/roundtripper_test.go
new file mode 100644
index 000000000..9afad20ae
--- /dev/null
+++ b/swarm/api/http/roundtripper_test.go
@@ -0,0 +1,68 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package http
+
+import (
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common/httpclient"
+)
+
+const port = "3222"
+
+func TestRoundTripper(t *testing.T) {
+	serveMux := http.NewServeMux()
+	serveMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == "GET" {
+			w.Header().Set("Content-Type", "text/plain")
+			http.ServeContent(w, r, "", time.Unix(0, 0), strings.NewReader(r.RequestURI))
+		} else {
+			http.Error(w, "Method "+r.Method+" is not supported.", http.StatusMethodNotAllowed)
+		}
+	})
+	go http.ListenAndServe(":"+port, serveMux)
+
+	rt := &RoundTripper{Port: port}
+	client := httpclient.New("/")
+	client.RegisterProtocol("bzz", rt)
+
+	resp, err := client.Client().Get("bzz://test.com/path")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+		return
+	}
+
+	defer func() {
+		if resp != nil {
+			resp.Body.Close()
+		}
+	}()
+
+	content, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+		return
+	}
+	if string(content) != "/HTTP/1.1:/test.com/path" {
+		t.Errorf("incorrect response from http server: expected '%v', got '%v'", "/HTTP/1.1:/test.com/path", string(content))
+	}
+
+}