html, body { font-size: 15px }
body { font-family: Helvetica, “Hiragino Sans GB”, “微软雅黑”, “Microsoft YaHei UI”, SimSun, SimHei, arial, sans-serif; line-height: 1.6; margin: 0; padding: 1.33rem 1rem }
h1, h2, h3, h4, h5, h6 { margin: 1.33rem 0 0.667rem; padding: 0; font-weight: bold }
h1 { font-size: 1.4rem }
h2 { font-size: 1.33rem }
h3 { font-size: 1.2rem }
h4 { font-size: 1.13rem }
h5 { font-size: 1rem }
h6 { font-size: 1rem; color: rgba(119, 119, 119, 1); margin: 1rem 0 }
div, p, ul, ol, dl, li { margin: 0 }
blockquote, table, pre, code { margin: 8px 0 }
ul, ol { padding-left: 2.13rem }
blockquote { padding: 0 0.8rem }
blockquote>:first-child { margin-top: 0 }
blockquote>:last-child { margin-bottom: 0 }
img { border: 0; max-width: 100%; height: auto !important; margin: 2px 0 }
table { border-collapse: collapse; border: 1px solid rgba(187, 187, 187, 1) }
td, th { padding: 4px 8px; border-collapse: collapse; border: 1px solid rgba(187, 187, 187, 1) }
@media only screen and (-webkit-max-device-width: 1024px), only screen and (-o-max-device-width: 1024px), only screen and (max-device-width: 1024px), only screen and (-webkit-min-device-pixel-ratio: 3), only screen and (-o-min-device-pixel-ratio: 3), only screen and (min-device-pixel-ratio: 3) { html, body { font-size: 17px } body { line-height: 1.7; padding: 0.75rem 0.9375rem; color: rgba(53, 60, 71, 1) } h1 { font-size: 2.125rem } h2 { font-size: 1.875rem } h3 { font-size: 1.625rem } h4 { font-size: 1.375rem } h5 { font-size: 1.125rem } h6 { color: inherit } ul, ol { padding-left: 2.5rem } blockquote { padding: 0 0.9375rem } }
html, body { font-size: 15px }
body { font-family: Arial, Helvetica, “Hiragino Sans GB”, 微软雅黑, “Microsoft YaHei UI”, SimSun, SimHei, arial, sans-serif; line-height: 1.5; margin: 0; padding: 1.33rem 1rem }
img { max-width: 100% }

 

html { height: 100% }
body { min-height: 100%; box-sizing: border-box }
.wiz-img-resize-handle { position: absolute; z-index: 1000; border: 1px solid rgba(0, 0, 0, 1); background-color: rgba(255, 255, 255, 1) }
.wiz-img-resize-handle { width: 5px; height: 5px }
.wiz-img-resize-handle.lt { cursor: nw-resize }
.wiz-img-resize-handle.tm { cursor: n-resize }
.wiz-img-resize-handle.rt { cursor: ne-resize }
.wiz-img-resize-handle.lm { cursor: w-resize }
.wiz-img-resize-handle.rm { cursor: e-resize }
.wiz-img-resize-handle.lb { cursor: sw-resize }
.wiz-img-resize-handle.bm { cursor: s-resize }
.wiz-img-resize-handle.rb { cursor: se-resize }
.wiz-table-body.wiz-table-moving *, .wiz-table-body.wiz-table-moving *:before, .wiz-table-body.wiz-table-moving *:after { cursor: default !important }
td, th { position: relative }
#wiz-table-range-border { display: none; width: 0; height: 0; position: absolute; top: 0; left: 0; z-index: 105 }
#wiz-table-col-line, #wiz-table-row-line { display: none; background-color: rgba(68, 138, 255, 1); position: absolute; z-index: 120 }
#wiz-table-col-line { width: 1px; cursor: col-resize }
#wiz-table-row-line { height: 1px; cursor: row-resize }
#wiz-table-range-border_start, #wiz-table-range-border_range { display: none; width: 0; height: 0; position: absolute }
#wiz-table-range-border_start_top, #wiz-table-range-border_range_top { height: 2px; background-color: rgba(68, 138, 255, 1); position: absolute; top: 0; left: 0 }
#wiz-table-range-border_range_top { height: 1px }
#wiz-table-range-border_start_right, #wiz-table-range-border_range_right { width: 2px; background-color: rgba(68, 138, 255, 1); position: absolute; top: 0 }
#wiz-table-range-border_range_right { width: 1px }
#wiz-table-range-border_start_bottom, #wiz-table-range-border_range_bottom { height: 2px; background-color: rgba(68, 138, 255, 1); position: absolute; top: 0 }
#wiz-table-range-border_range_bottom { height: 1px }
#wiz-table-range-border_start_left, #wiz-table-range-border_range_left { width: 2px; background-color: rgba(68, 138, 255, 1); position: absolute; top: 0; left: 0 }
#wiz-table-range-border_range_left { width: 1px }
#wiz-table-range-border_start_dot, #wiz-table-range-border_range_dot { width: 5px; height: 5px; border: 2px solid rgba(255, 255, 255, 1); background-color: rgba(68, 138, 255, 1); cursor: crosshair; position: absolute; z-index: 110 }
.wiz-table-tools { display: block; background-color: rgba(255, 255, 255, 1); position: absolute; left: 0; border: 1px solid rgba(221, 221, 221, 1); -webkit-border-radius: 5px; -moz-border-radius: 5px; border-radius: 5px; z-index: 130 }
.wiz-table-tools ul { list-style: none; padding: 0 }
.wiz-table-tools .wiz-table-menu-item { position: relative; float: left; margin: 5px 2px 5px 8px }
.wiz-table-tools .wiz-table-menu-item .wiz-table-menu-button { font-size: 15px; width: 20px; height: 20px; line-height: 20px; cursor: pointer; position: relative }
.wiz-table-tools i.editor-icon { font-size: 15px; color: rgba(69, 90, 100, 1) }
.wiz-table-tools .wiz-table-menu-item .wiz-table-menu-button i#wiz-menu-bg-demo { position: absolute; top: 1px; left: 0 }
.wiz-table-tools .wiz-table-menu-sub { position: absolute; display: none; width: 125px; padding: 5px 0; background: rgba(255, 255, 255, 1); border-radius: 3px; border: 1px solid rgba(224, 224, 224, 1); top: 28px; left: -9px; box-shadow: 1px 1px 5px rgba(208, 208, 208, 1) }
.wiz-table-tools .wiz-table-menu-sub>div { font-size: 15px }
.wiz-table-tools .wiz-table-menu-item.active .wiz-table-menu-sub { display: block }
.wiz-table-tools .wiz-table-menu-sub:before, .wiz-table-tools .wiz-table-menu-sub:after { position: absolute; content: ” “; border-top: 0 solid rgba(0, 0, 0, 0); border-right: 8px solid rgba(0, 0, 0, 0); border-bottom: 8px solid rgba(204, 204, 204, 1); border-left: 8px solid rgba(0, 0, 0, 0); left: 22px; margin-left: -14px; top: -8px; z-index: 10 }
.wiz-table-tools .wiz-table-menu-sub:after { border-bottom-color: rgba(255, 255, 255, 1); top: -7px }
.wiz-table-tools .wiz-table-menu-sub-item { padding: 4px 12px; font-size: 14px }
.wiz-table-tools .wiz-table-menu-sub-item.split { border-top: 1px solid rgba(224, 224, 224, 1) }
.wiz-table-tools .wiz-table-menu-sub-item:hover { background-color: rgba(236, 236, 236, 1) }
.wiz-table-tools .wiz-table-menu-sub-item.disabled { color: rgba(187, 187, 187, 1); cursor: default }
.wiz-table-tools .wiz-table-menu-sub-item.disabled:hover { background-color: rgba(0, 0, 0, 0) }
.wiz-table-tools .wiz-table-menu-item.wiz-table-cell-bg:hover .wiz-table-color-pad { display: block }
.wiz-table-tools .wiz-table-color-pad { display: none; padding: 10px; box-sizing: border-box; width: 85px; height: 88px; background-color: rgba(255, 255, 255, 1); cursor: default }
.wiz-table-tools .wiz-table-color-pad>div { font-size: 15px }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item { display: inline-block; width: 15px; height: 15px; margin-right: 9px; position: relative }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item i.pad-demo { position: absolute; top: 3px; left: 0 }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item .icon-oblique_line { color: rgba(204, 0, 0, 1) }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item:last-child { margin-right: 0 }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item.active i.editor-icon.icon-box { color: rgba(68, 138, 255, 1) }
.wiz-table-tools .wiz-table-cell-align { display: none; padding: 10px; box-sizing: border-box; width: 85px; height: 65px; background-color: rgba(255, 255, 255, 1); cursor: default }
.wiz-table-tools .wiz-table-cell-align .wiz-table-cell-align-item { display: inline-block; width: 15px; height: 15px; margin-right: 9px; position: relative }
.wiz-table-tools .wiz-table-cell-align .wiz-table-cell-align-item:last-child { margin-right: 0 }
.wiz-table-tools .wiz-table-cell-align .wiz-table-cell-align-item i.valign { position: absolute; top: 3px; left: 0; color: rgba(210, 210, 210, 1) }
.wiz-table-tools .wiz-table-cell-align-item.active i.editor-icon.valign { color: rgba(161, 196, 255, 1) }
.wiz-table-tools .wiz-table-cell-align-item.active i.editor-icon.icon-box, .wiz-table-tools .wiz-table-cell-align-item.active i.editor-icon.align { color: rgba(68, 138, 255, 1) }
.wiz-table-tools .wiz-table-color-pad .wiz-table-color-pad-item:last-child, .wiz-table-tools .wiz-table-cell-align .wiz-table-cell-align-item:last-child { margin-right: 0 }
th.wiz-selected-cell-multi, td.wiz-selected-cell-multi { background: rgba(0, 102, 255, 0.05) }
th:before, td:before, #wiz-table-col-line:before, #wiz-table-range-border_start_right:before, #wiz-table-range-border_range_right:before { content: ” “; position: absolute; top: 0; bottom: 0; right: -5px; width: 9px; cursor: col-resize; background: rgba(0, 0, 0, 0); z-index: 100 }
th:after, td:after, #wiz-table-row-line:before, #wiz-table-range-border_start_bottom:before, #wiz-table-range-border_range_bottom:before { content: ” “; position: absolute; left: 0; right: 0; bottom: -5px; height: 9px; cursor: row-resize; background: rgba(0, 0, 0, 0); z-index: 100 }
.wiz-table-container { }
.wiz-table-body { position: relative; padding: 0 0 10px; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch }
.wiz-table-body table { margin: 0; outline: none }
td, th { height: 28px; word-break: break-all; box-sizing: border-box; outline: none }
body pre.prettyprint { padding: 0 }
body pre.prettyprint code { white-space: pre }
body pre.prettyprint.linenums { box-shadow: none; overflow: auto; -webkit-overflow-scrolling: touch }
body pre.prettyprint.linenums ol.linenums { box-shadow: inset 40px 0 rgba(251, 251, 252, 1), inset 41px 0 rgba(236, 236, 240, 1); padding: 10px 10px 10px 40px !important }

Flask 出现 “Broken pipe” 现象说明：
采用 Flask 原生 WSGI 发布 Web（app.run()）。随后，发起一个 Request，在 Request 还未返回前停止查询，并重新发起一个新的 Request。服务端很可能出现类似如下的”Broken pipe”报错。
Exception in thread Thread-1:
Traceback (most recent call last):
  File “/usrb64/python2.7/threading.py”, line 811, in __bootstrap_inner
    self.run()
  File “/usrb64/python2.7/threading.py”, line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 659, in inner
    srv.serve_forever()
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 499, in serve_forever
    HTTPServer.serve_forever(self)
  File “/usrb64/python2.7/SocketServer.py”, line 238, in serve_forever
    self._handle_request_noblock()
  File “/usrb64/python2.7/SocketServer.py”, line 297, in _handle_request_noblock
    self.handle_error(request, client_address)
  File “/usrb64/python2.7/SocketServer.py”, line 295, in _handle_request_noblock
    self.process_request(request, client_address)
  File “/usrb64/python2.7/SocketServer.py”, line 321, in process_request
    self.finish_request(request, client_address)
  File “/usrb64/python2.7/SocketServer.py”, line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File “/usrb64/python2.7/SocketServer.py”, line 649, in __init__
    self.handle()
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 216, in handle
    rv = BaseHTTPRequestHandler.handle(self)
  File “/usrb64/python2.7/BaseHTTPServer.py”, line 340, in handle
    self.handle_one_request()
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 251, in handle_one_request
    return self.run_wsgi()
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 193, in run_wsgi
    execute(self.server.app)
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 184, in execute
    write(data)
  File “/usrb/python2.7/site-packages/werkzeugrving.py”, line 152, in write
    self.send_header(key, value)
  File “/usrb64/python2.7/BaseHTTPServer.py”, line 401, in send_header
    self.wfile.write(“%s: %s\r\n” % (keyword, value))
IOError: [Errno 32] Broken pipe
 

“Broken pipe” 报错原因：<wiz_tmp_tag id=”wiz-table-range-border” contenteditable=”false” style=”display: none;”>

 
 
 
 
“Broken pipe” 的字面意思为 “管道破裂”，本质为写入端反馈时读端却关闭，因而造成没有及时取走管道中的数据，从而引发程序异常。
 
“Broken pipe” 报错处理方式：
放弃对 Flask 原生 WSGI 的使用，转而使用全功能的 WSGI，例如：gunicorn、uWSGI 等。
 
多种 WSGI 对引发 “Broken pip” 报错操作的响应对比：
1.Flask 原生 WSGI
采用 Flask 原生 WSGI 的最简测试程序如下。
from flask import Flask
                                                                          
app = Flask(__name__)
                                                                             
@app.route(\’/\’)
def index():
    import time
    time.sleep(10)
    return \’Hello World\’
                                   
app.run(host=\’11.4.76.73\’, port=6001)
调用方式如下。
# ./env/bin/python flasktest.py
当发起一个 Request，在 Request 还未返回前停止查询，并重新发起一个新的 Request时，WSGI 响应类似如下。

注意：报错”Broken pipe”，程序崩溃。
2.gunicorn
采用 gunicorn 的最简测试程序如下。
from flask import Flask
                                     
app = Flask(__name__)
                                       
@app.route(\’/\’)
def index():
    import time
    time.sleep(10)
    return \’Hello World\’
调用方式如下。
# ./env/bin/gunicorn -w 1 –log-level \’debug\’ -b 11.4.76.73:6002 gunicorntest:app
当发起一个 Request，在 Request 还未返回前停止查询，并重新发起一个新的 Request时，WSGI 响应类似如下。

注意：出现”Ignoring connection reset“信息，但不影响应用运行。
3.pywsgi
采用 pywsgi 的最简测试程序如下。
from gevent import monkey
monkey.patch_all()
from flask import Flask
from gevent import pywsgi
                                       
app = Flask(__name__)
                                       
@app.route(\’/\’)
def index():
    import time
    time.sleep(10)
    return \’Hello World\’
                                   
server = pywsgi.WSGIServer((\’11.4.76.73\’, 6003), app)
server.serve_forever()
调用方式如下。
# ./env/bin/python geventtest.py
当发起一个 Request，在 Request 还未返回前停止查询，并重新发起一个新的 Request时，WSGI 响应类似如下。
注意：应用正常。

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