Created
December 28, 2012 04:53
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xhr2でバイナリデータを送信するテストです。ボタンをクリックするとクライアントから3バイトの情報がArrayBufferで送られます。それをサーバーがバイナリとして受け取り、それをそのままクライアントに送り返します。クライアント側で受け取った3バイトの情報をtextareaに表示します。
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| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8" > | |
| <title>xhr2 test</title> | |
| <body> | |
| <textarea id="response"></textarea> | |
| <button id="send">send</button> | |
| <script> | |
| var txtArea = document.getElementById('response'); | |
| document.getElementById('send').addEventListener('click', function(e) { | |
| var xhr = new XMLHttpRequest(); | |
| xhr.open('POST', '/send', true); | |
| xhr.responseType = 'arraybuffer'; | |
| xhr.onload = function(e) { | |
| var dv; | |
| if(this.status == 200) { | |
| var dv = new DataView(this.response); | |
| txtArea.value = '('+ | |
| dv.getUint8(0) + ','+ | |
| dv.getUint8(1) + ','+ | |
| dv.getUint8(2) + ')'; | |
| } else { | |
| console.log(this.status); | |
| } | |
| }; | |
| buf = new ArrayBuffer(3); | |
| dv = new DataView(buf); | |
| dv.setUint8(0, 0x01); | |
| dv.setUint8(1, 0x02); | |
| dv.setUint8(2, 0x03); | |
| xhr.send(buf); | |
| }, false); | |
| </script> | |
| </body> | |
| </html> |
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| # -*- encoding: utf-8 -*- | |
| import os | |
| from BaseHTTPServer import BaseHTTPRequestHandler | |
| import binascii | |
| ERROR_HTML = \ | |
| "<head>\n"\ | |
| "<title>Error response</title>\n"\ | |
| "</head>\n"\ | |
| "<body>\n"\ | |
| "<h1>Error response</h1>\n"\ | |
| "<p>Error code %(code)d.\n"\ | |
| "<p>Message: %(message)s.\n"\ | |
| "<p>Error code explanation: %(code)d = %(explain)s.\n"\ | |
| "</body>\n" | |
| def date_time_string(): | |
| return "%s, %02d %3s %4d %02d:%02d:%02d GMT" % ( | |
| "Sun", 28, "Nov", 2011, 3, 18, 14) | |
| def SimpleApplication(environ, start_response): | |
| req = Request(environ, start_response) | |
| Method = req.environ['REQUEST_METHOD'] | |
| if Method == 'HEAD': | |
| req.send_file(environ['PATH_INFO'], isget=False) | |
| elif Method == 'GET': | |
| req.send_file(environ['PATH_INFO']) | |
| elif Method == 'POST': | |
| buf = [] | |
| rfile = environ['wsgi.input'] | |
| data = rfile.read(int(environ['CONTENT_LENGTH'])) | |
| req.app_run(data) | |
| else: | |
| req.send_error(501, "Unsupported method (%r)" % Method) | |
| return '' | |
| class Request(object): | |
| def __init__(self, environ, start_response): | |
| self.environ = environ | |
| self._start_response = start_response | |
| self._outheaders = [] | |
| self._write = None | |
| self.base_path = environ.get('app.base_path', '/static') | |
| def app_run(self, data,content_type="application/octet-stream", status=200): | |
| if self.environ['PATH_INFO'] != '/send': | |
| self.send_error(501, "Unsupported path (%r)" % self.environ['PATH_INFO']) | |
| return | |
| print(binascii.hexlify(data)) | |
| self.send_response(status) | |
| self.send_header("Content-type", content_type) | |
| path_info = self.environ['PATH_INFO'] | |
| self.send_header("Content-Length", str(len(data))) | |
| self.send_header("Last-Modified", date_time_string()) | |
| self.end_headers() | |
| self._write(data) | |
| def send_file(self, path, content_type="text/html", status=200, isget=True): | |
| if path == '/': | |
| path = '.' + self.base_path + '/index.html' | |
| elif path.startswith(self.base_path): | |
| if path.endswith('index.html'): | |
| self.send_error(404, "File not found") | |
| return | |
| path = '.' + path | |
| else: | |
| path = '.' + self.base_path + path | |
| if not os.path.exists(path): | |
| self.send_error(404, "File not found") | |
| return | |
| self.send_response(status) | |
| self.send_header("Content-type", content_type) | |
| size = os.stat(path).st_size | |
| self.send_header("Content-Length", str(size)) | |
| self.send_header("Last-Modified", date_time_string()) | |
| self.end_headers() | |
| if isget and size > 0: | |
| f = open(path, "rb") | |
| self._write(f.read()) | |
| else: | |
| self._write('') | |
| def send_error(self, status, message): | |
| try: | |
| short, explain = BaseHTTPRequestHandler.responses[status] | |
| except: | |
| explain = '???' | |
| self.send_response(status) | |
| self.send_header("Content-type", "text/html") | |
| self.send_header("Connection", "close") | |
| self.end_headers() | |
| self._write(ERROR_HTML % {'code': status, 'message': message, 'explain': explain}) | |
| def send_response(self, status): | |
| self._status = status | |
| def send_header(self, key, value): | |
| self._outheaders.append((key, value)) | |
| def end_headers(self): | |
| status = "%d OK" % self._status | |
| self._write = self._start_response(status, self._outheaders) | |
| application = SimpleApplication |
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