PHP 和 python 节俭
PHP and python thrift
我是 Thrift Apache 的新手。我正在使用 API edenremote。当 thrift 调用函数 readMessageBegin 时，它进入循环并且我没有收到任何响应并且请求正在进行
请帮我解决这个问题。
@编辑：从昨天开始我调试它并发现了以下内容。
我在 PHP 中的主要代码如下
$result = json_decode(exec('./Authenticator.py'));
//var_dump($result);
$socket = new TSocket('localhost', 9090);
$socket->setSendTimeout(50);
$socket->setRecvTimeout(50);
$transport = new TFramedTransport($socket, 1024, 1024);
$protocol = new TBinaryProtocol($transport);
$client = new \edenremotephp\pub\EdenRemote\EdenRemoteClient($protocol);
$transport->open();
$client->openSession($result->sessionID, 1);
PHP 中针对 openSession 的响应是
/home/abbas/www/local.edenremote.com/index.php:56:string 'TSocket: timed out reading 4 bytes from localhost:9090' (length=54)
并且在服务器 (Python) 中得到了这个响应
127.0.0.1 - - [24/Apr/2017 20:00:22] "POST /response HTTP/1.1" 200 -
127.0.0.1 - - [24/Apr/2017 20:00:22] code 400, message Bad request version ('\x00\x01\x00\x00\x0033e905-28dd-11e7-a104-b4b67605b5e0\x08\x00\x02\x00\x00\x00\x01\x00')
127.0.0.1 - - [24/Apr/2017 20:00:22] "J�
openSession
33e905-28dd-11e7-a104-b4b67605b5e" 400 -
我希望它能帮助您理解我的主要问题。谢谢。
Python Server Handler（不完整，完整的文件很大。如果想了解更多请告诉我）：
class myHandler(BaseHTTPRequestHandler):
#Handler for the GET requests
def do_GET(self):
if self.path=="/":
self.path="/testData/index.html"
try:
#Check the file extension required and
#set the right mime type
sendReply = False
if self.path.endswith(".html"):
mimetype='text/html'
sendReply = True
if self.path.endswith(".jpg"):
mimetype='image/jpg'
sendReply = True
if self.path.endswith(".gif"):
mimetype='image/gif'
sendReply = True
if self.path.endswith(".js"):
mimetype='application/javascript'
sendReply = True
if self.path.endswith(".css"):
mimetype='text/css'
sendReply = True
if sendReply == True:
#Open the static file requested and send it
filePath = os.path.realpath(curdir + self.path)
print "Debug - filePath:", filePath
f = open(filePath)
self.send_response(200)
self.send_header('Content-type',mimetype)
self.end_headers()
self.wfile.write(f.read())
f.close()
return
except IOError:
self.send_error(404,'File Not Found: %s' % self.path)
#---------------------------------------------------------------------------
# Handler for the POST requests
def do_POST(self):
if self.path=="/send":
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
print "Your access key ID is: %s" % form["accessKeyId"].value
self.send_response(200)
self.end_headers()
self.wfile.write("Thanks %s !" % form["accessKeyId"].value)
return
if self.path=="/authenticate":
print "authenticate post happened"
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
xml = self.handleServerAuthChallenge(form)
self.send_response(200)
self.end_headers()
self.wfile.write(xml)
return
if self.path=="/response":
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
xml = self.handleServerAuthResult(form)
self.send_response(200)
self.end_headers()
self.wfile.write(xml)
return
#---------------------------------------------------------------------------
def handleServerAuthChallenge(self, form):
global gAuthRequests
global gDebug
if gDebug:
print gWebSeparator
# Instance the XML object to return to the auth requester
serverAuthChallenge = AuthXml.ServerAuthChallenge()
# Make sure that the required parameters are present
error = False
for requiredParam in kAuthPhase1_QueryNames:
if requiredParam not in form:
error = True
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_MissingQueryParameter))
serverAuthChallenge.setResultMessage("You must provide the following query parameter: " + requiredParam)
if gDebug:
print "Missing query parameter"
print " " + serverAuthChallenge.getResultMessage()
print
# If all the parameters are present, then process them
if not error:
clientVersion = form[kAuthPhase1_QueryName_ClientVersion].value
accessKeyId = form[kAuthPhase1_QueryName_AccessKeyId].value
if gDebug:
print "handleServerAuthChallenge called with these form values:"
print " clientVersion: " + clientVersion
print " accessKeyId: " + accessKeyId
print
# If the client is too old, then return an error
clientVersionInt = int(clientVersion)
if clientVersionInt < kClientAuthVersion_Minimum:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_ClientUpdateNeeded))
serverAuthChallenge.setResultMessage("The specified client version (" + clientVersion + ") is too old to use this service. Please update your client side library to the latest version.")
else:
# First see if the key ID from the client is in our disabled list. If it is,
# then return the disabled error
if accessKeyId in gDisabledAccessKeyHelpers:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_AccessKeyDisabled))
serverAuthChallenge.setResultMessage("The specified " + kAuthPhase1_QueryName_AccessKeyId + " is disabled and cannot be used: " + accessKeyId)
# See if the specified key ID from the client can be found in our test dictionary.
# If it can't, then return an error. Otherwise, provide the challenge XML to the
# client so that it can take the next steps.
elif accessKeyId in gValidAccessKeyHelpers:
serverAuthChallenge.setNextUrl("http://" + str(TEST_SERVER_HOST_NAME) + ":" + str(PORT_NUMBER) + "/response")
requestId = str(uuid.uuid1())
authRequest = AuthRequest(accessKeyId)
gAuthRequests[requestId] = authRequest
serverAuthChallenge.setRequestId(requestId)
challenge = base64.b64encode(authRequest.getChallenge())
serverAuthChallenge.setChallenge(challenge)
else:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidKeyIdentifier))
serverAuthChallenge.setResultMessage("The specified " + kAuthPhase1_QueryName_AccessKeyId + " is unknown: " + accessKeyId)
# Get the XML string that we'll return to the caller
xml = serverAuthChallenge.getXml()
if gDebug:
print "About to provide this XML response to the client:"
print
print serverAuthChallenge.getXml(pretty=True)
return xml
#---------------------------------------------------------------------------
def handleServerAuthResult(self, form):
global gSessions
global gDebug
if gDebug:
print gWebSeparator
# Instance the XML object to return to the auth requester
serverAuthResult = AuthXml.ServerAuthResult()
# Make sure that the required parameters are present
error = False
for requiredParam in kAuthPhase2_QueryNames:
if requiredParam not in form:
error = True
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_MissingQueryParameter))
serverAuthResult.setResultMessage("You must provide the following query parameter: " + requiredParam)
if gDebug:
print "Missing query parameter"
print " " + serverAuthResult.getResultMessage()
print
# If all the parameters are present, then process them
if not error:
requestId = form[kAuthPhase2_QueryName_RequestId].value
response = form[kAuthPhase2_QueryName_Response].value
initializationVector = form[kAuthPhase2_QueryName_InitializationVector].value
if gDebug:
print "serverAuthResult called with these form values:"
print " requestId: " + requestId
print " response: " + response
print " initializationVector: " + initializationVector
print
# Find the key identifier associated with the incoming request, and use it
# to get the server access key that we will use to decrypt the incoming response
# and check it against the challenge originally provided.
if requestId in gAuthRequests:
# Remove the request from our dictionary so that we won't accidentally find it again
authRequest = gAuthRequests.pop(requestId, None)
# Get the services access key associated with the auth request, then decrypt the
# response and compare it to the original challenge.
helper = gValidAccessKeyHelpers[authRequest.getAccessKeyId()]
decryptedChallenge = helper.decodeAndDecrypt(response, inIv=base64.b64decode(initializationVector))
if gDebug:
print "decryptedChallenge: " + base64.b64encode(decryptedChallenge)
if decryptedChallenge == authRequest.getChallenge():
# Give the authenticated URL to the client. In a real server implementation, this
# would be a randomized URL, not static.
serverAuthResult.setNextUrl("http://" + str(TEST_SERVER_HOST_NAME) + ":" + str(THRIFT_PORT_NUMBER))
# Return a randomized session ID. Again, in the real server, this could be the same
# as the random component of the returned URL.
session = Session()
sessionId = session.getSessionId()
gSessions[sessionId] = session
serverAuthResult.setSessionId(sessionId)
else:
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidResponse))
serverAuthResult.setResultMessage("The specified response is not valid: " + response)
else:
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidRequestId))
serverAuthResult.setResultMessage("The specified requestId is not valid: " + requestId)
print
# Get the XML string that we'll return to the caller
xml = serverAuthResult.getXml()
if gDebug:
print "About to provide this XML response to the client:"
print
print serverAuthResult.getXml(pretty=True)
return xml
try:
# Initialize the dictionary of valid server access keys that will work with this test
# server.
for curAccessKeyString in gValidAccessKeyStrings:
helper = AccessKeyHelper.AccessKeyHelper(curAccessKeyString)
gValidAccessKeyHelpers[helper.getAccessKeyIdentifier()] = helper
# Initialize the dictionary of disabled server access keys that will work with this test
# server.
for curAccessKeyString in gDisabledAccessKeyStrings:
helper = AccessKeyHelper.AccessKeyHelper(curAccessKeyString)
gDisabledAccessKeyHelpers[helper.getAccessKeyIdentifier()] = helper
# Start the Thrift server in a separate thread
startThriftServer()
# Create a web server and define the handler to manage incoming requests
server = HTTPServer(('', PORT_NUMBER), myHandler)
print 'Started http server on port ' , PORT_NUMBER
# Wait forever for incoming http requests
server.serve_forever()
except KeyboardInterrupt:
print
print '^C received, shutting down the web server...'
closeHttpServer(server)
print ' Http server closed; Done processing control C'
if gThriftServer:
print ' Calling the thrift server\'s server_close...'
closeHttpServer(gThriftServer.httpd)
print ' Thrift server closed'
if gThriftServerThread:
print "Waiting for the thrift server thread to stop..."
gThriftServerThread.join()
print "All servers stopped. Exiting..."
sys.exit(0)
startThriftServer() 代码是这样的
def startThriftServer():
global gThriftServer
global gThriftServerThread
handler = EdenRemoteHandler()
processor = EdenRemote.Processor(handler)
pfactory = TBinaryProtocol.TBinaryProtocolFactory()
gThriftServer = THttpServer.THttpServer(processor, (TEST_SERVER_HOST_NAME, THRIFT_PORT_NUMBER), pfactory)
# Start the Thrift server in a separate thread
gThriftServerThread = threading.Thread(target=serveFromThread, args=(gThriftServer, ))
gThriftServerThread.start()
宾果。
客户代码：
$socket = new TSocket('localhost', 9090);
$transport = new TFramedTransport($socket, 1024, 1024);
$protocol = new TBinaryProtocol($transport);
服务器代码：
handler = EdenRemoteHandler()
processor = EdenRemote.Processor(handler)
pfactory = TBinaryProtocol.TBinaryProtocolFactory()
gThriftServer = THttpServer.THttpServer(processor, ..., pfactory)
那有什么问题吗？
客户端使用TFramedTransport，而服务器不使用。虽然某些服务器类型确实暗示 TFramedTransport，但 THttpServer 却没有。
因此解决方案是
- 在服务器端也添加
TFramedTransport（推荐）
- 如果无法更改服务器，则从客户端删除它
如果您必须选择第二种情况，请考虑将 TFramedTransport 替换为 TBufferedTransport，这几乎同样有效，但对线路格式没有任何影响。
我是 Thrift Apache 的新手。我正在使用 API edenremote。当 thrift 调用函数 readMessageBegin 时，它进入循环并且我没有收到任何响应并且请求正在进行
请帮我解决这个问题。
@编辑：从昨天开始我调试它并发现了以下内容。
我在 PHP 中的主要代码如下
$result = json_decode(exec('./Authenticator.py'));
//var_dump($result);
$socket = new TSocket('localhost', 9090);
$socket->setSendTimeout(50);
$socket->setRecvTimeout(50);
$transport = new TFramedTransport($socket, 1024, 1024);
$protocol = new TBinaryProtocol($transport);
$client = new \edenremotephp\pub\EdenRemote\EdenRemoteClient($protocol);
$transport->open();
$client->openSession($result->sessionID, 1);
PHP 中针对 openSession 的响应是
/home/abbas/www/local.edenremote.com/index.php:56:string 'TSocket: timed out reading 4 bytes from localhost:9090' (length=54)
并且在服务器 (Python) 中得到了这个响应
127.0.0.1 - - [24/Apr/2017 20:00:22] "POST /response HTTP/1.1" 200 -
127.0.0.1 - - [24/Apr/2017 20:00:22] code 400, message Bad request version ('\x00\x01\x00\x00\x0033e905-28dd-11e7-a104-b4b67605b5e0\x08\x00\x02\x00\x00\x00\x01\x00')
127.0.0.1 - - [24/Apr/2017 20:00:22] "J�
openSession
33e905-28dd-11e7-a104-b4b67605b5e" 400 -
我希望它能帮助您理解我的主要问题。谢谢。
Python Server Handler（不完整，完整的文件很大。如果想了解更多请告诉我）：
class myHandler(BaseHTTPRequestHandler):
#Handler for the GET requests
def do_GET(self):
if self.path=="/":
self.path="/testData/index.html"
try:
#Check the file extension required and
#set the right mime type
sendReply = False
if self.path.endswith(".html"):
mimetype='text/html'
sendReply = True
if self.path.endswith(".jpg"):
mimetype='image/jpg'
sendReply = True
if self.path.endswith(".gif"):
mimetype='image/gif'
sendReply = True
if self.path.endswith(".js"):
mimetype='application/javascript'
sendReply = True
if self.path.endswith(".css"):
mimetype='text/css'
sendReply = True
if sendReply == True:
#Open the static file requested and send it
filePath = os.path.realpath(curdir + self.path)
print "Debug - filePath:", filePath
f = open(filePath)
self.send_response(200)
self.send_header('Content-type',mimetype)
self.end_headers()
self.wfile.write(f.read())
f.close()
return
except IOError:
self.send_error(404,'File Not Found: %s' % self.path)
#---------------------------------------------------------------------------
# Handler for the POST requests
def do_POST(self):
if self.path=="/send":
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
print "Your access key ID is: %s" % form["accessKeyId"].value
self.send_response(200)
self.end_headers()
self.wfile.write("Thanks %s !" % form["accessKeyId"].value)
return
if self.path=="/authenticate":
print "authenticate post happened"
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
xml = self.handleServerAuthChallenge(form)
self.send_response(200)
self.end_headers()
self.wfile.write(xml)
return
if self.path=="/response":
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
xml = self.handleServerAuthResult(form)
self.send_response(200)
self.end_headers()
self.wfile.write(xml)
return
#---------------------------------------------------------------------------
def handleServerAuthChallenge(self, form):
global gAuthRequests
global gDebug
if gDebug:
print gWebSeparator
# Instance the XML object to return to the auth requester
serverAuthChallenge = AuthXml.ServerAuthChallenge()
# Make sure that the required parameters are present
error = False
for requiredParam in kAuthPhase1_QueryNames:
if requiredParam not in form:
error = True
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_MissingQueryParameter))
serverAuthChallenge.setResultMessage("You must provide the following query parameter: " + requiredParam)
if gDebug:
print "Missing query parameter"
print " " + serverAuthChallenge.getResultMessage()
print
# If all the parameters are present, then process them
if not error:
clientVersion = form[kAuthPhase1_QueryName_ClientVersion].value
accessKeyId = form[kAuthPhase1_QueryName_AccessKeyId].value
if gDebug:
print "handleServerAuthChallenge called with these form values:"
print " clientVersion: " + clientVersion
print " accessKeyId: " + accessKeyId
print
# If the client is too old, then return an error
clientVersionInt = int(clientVersion)
if clientVersionInt < kClientAuthVersion_Minimum:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_ClientUpdateNeeded))
serverAuthChallenge.setResultMessage("The specified client version (" + clientVersion + ") is too old to use this service. Please update your client side library to the latest version.")
else:
# First see if the key ID from the client is in our disabled list. If it is,
# then return the disabled error
if accessKeyId in gDisabledAccessKeyHelpers:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_AccessKeyDisabled))
serverAuthChallenge.setResultMessage("The specified " + kAuthPhase1_QueryName_AccessKeyId + " is disabled and cannot be used: " + accessKeyId)
# See if the specified key ID from the client can be found in our test dictionary.
# If it can't, then return an error. Otherwise, provide the challenge XML to the
# client so that it can take the next steps.
elif accessKeyId in gValidAccessKeyHelpers:
serverAuthChallenge.setNextUrl("http://" + str(TEST_SERVER_HOST_NAME) + ":" + str(PORT_NUMBER) + "/response")
requestId = str(uuid.uuid1())
authRequest = AuthRequest(accessKeyId)
gAuthRequests[requestId] = authRequest
serverAuthChallenge.setRequestId(requestId)
challenge = base64.b64encode(authRequest.getChallenge())
serverAuthChallenge.setChallenge(challenge)
else:
serverAuthChallenge.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidKeyIdentifier))
serverAuthChallenge.setResultMessage("The specified " + kAuthPhase1_QueryName_AccessKeyId + " is unknown: " + accessKeyId)
# Get the XML string that we'll return to the caller
xml = serverAuthChallenge.getXml()
if gDebug:
print "About to provide this XML response to the client:"
print
print serverAuthChallenge.getXml(pretty=True)
return xml
#---------------------------------------------------------------------------
def handleServerAuthResult(self, form):
global gSessions
global gDebug
if gDebug:
print gWebSeparator
# Instance the XML object to return to the auth requester
serverAuthResult = AuthXml.ServerAuthResult()
# Make sure that the required parameters are present
error = False
for requiredParam in kAuthPhase2_QueryNames:
if requiredParam not in form:
error = True
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_MissingQueryParameter))
serverAuthResult.setResultMessage("You must provide the following query parameter: " + requiredParam)
if gDebug:
print "Missing query parameter"
print " " + serverAuthResult.getResultMessage()
print
# If all the parameters are present, then process them
if not error:
requestId = form[kAuthPhase2_QueryName_RequestId].value
response = form[kAuthPhase2_QueryName_Response].value
initializationVector = form[kAuthPhase2_QueryName_InitializationVector].value
if gDebug:
print "serverAuthResult called with these form values:"
print " requestId: " + requestId
print " response: " + response
print " initializationVector: " + initializationVector
print
# Find the key identifier associated with the incoming request, and use it
# to get the server access key that we will use to decrypt the incoming response
# and check it against the challenge originally provided.
if requestId in gAuthRequests:
# Remove the request from our dictionary so that we won't accidentally find it again
authRequest = gAuthRequests.pop(requestId, None)
# Get the services access key associated with the auth request, then decrypt the
# response and compare it to the original challenge.
helper = gValidAccessKeyHelpers[authRequest.getAccessKeyId()]
decryptedChallenge = helper.decodeAndDecrypt(response, inIv=base64.b64decode(initializationVector))
if gDebug:
print "decryptedChallenge: " + base64.b64encode(decryptedChallenge)
if decryptedChallenge == authRequest.getChallenge():
# Give the authenticated URL to the client. In a real server implementation, this
# would be a randomized URL, not static.
serverAuthResult.setNextUrl("http://" + str(TEST_SERVER_HOST_NAME) + ":" + str(THRIFT_PORT_NUMBER))
# Return a randomized session ID. Again, in the real server, this could be the same
# as the random component of the returned URL.
session = Session()
sessionId = session.getSessionId()
gSessions[sessionId] = session
serverAuthResult.setSessionId(sessionId)
else:
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidResponse))
serverAuthResult.setResultMessage("The specified response is not valid: " + response)
else:
serverAuthResult.setResultCode(str(AuthResultCode.kAuthResultCode_InvalidRequestId))
serverAuthResult.setResultMessage("The specified requestId is not valid: " + requestId)
print
# Get the XML string that we'll return to the caller
xml = serverAuthResult.getXml()
if gDebug:
print "About to provide this XML response to the client:"
print
print serverAuthResult.getXml(pretty=True)
return xml
try:
# Initialize the dictionary of valid server access keys that will work with this test
# server.
for curAccessKeyString in gValidAccessKeyStrings:
helper = AccessKeyHelper.AccessKeyHelper(curAccessKeyString)
gValidAccessKeyHelpers[helper.getAccessKeyIdentifier()] = helper
# Initialize the dictionary of disabled server access keys that will work with this test
# server.
for curAccessKeyString in gDisabledAccessKeyStrings:
helper = AccessKeyHelper.AccessKeyHelper(curAccessKeyString)
gDisabledAccessKeyHelpers[helper.getAccessKeyIdentifier()] = helper
# Start the Thrift server in a separate thread
startThriftServer()
# Create a web server and define the handler to manage incoming requests
server = HTTPServer(('', PORT_NUMBER), myHandler)
print 'Started http server on port ' , PORT_NUMBER
# Wait forever for incoming http requests
server.serve_forever()
except KeyboardInterrupt:
print
print '^C received, shutting down the web server...'
closeHttpServer(server)
print ' Http server closed; Done processing control C'
if gThriftServer:
print ' Calling the thrift server\'s server_close...'
closeHttpServer(gThriftServer.httpd)
print ' Thrift server closed'
if gThriftServerThread:
print "Waiting for the thrift server thread to stop..."
gThriftServerThread.join()
print "All servers stopped. Exiting..."
sys.exit(0)
startThriftServer() 代码是这样的
def startThriftServer():
global gThriftServer
global gThriftServerThread
handler = EdenRemoteHandler()
processor = EdenRemote.Processor(handler)
pfactory = TBinaryProtocol.TBinaryProtocolFactory()
gThriftServer = THttpServer.THttpServer(processor, (TEST_SERVER_HOST_NAME, THRIFT_PORT_NUMBER), pfactory)
# Start the Thrift server in a separate thread
gThriftServerThread = threading.Thread(target=serveFromThread, args=(gThriftServer, ))
gThriftServerThread.start()
宾果。
客户代码：
$socket = new TSocket('localhost', 9090);
$transport = new TFramedTransport($socket, 1024, 1024);
$protocol = new TBinaryProtocol($transport);
服务器代码：
handler = EdenRemoteHandler()
processor = EdenRemote.Processor(handler)
pfactory = TBinaryProtocol.TBinaryProtocolFactory()
gThriftServer = THttpServer.THttpServer(processor, ..., pfactory)
那有什么问题吗？
客户端使用TFramedTransport，而服务器不使用。虽然某些服务器类型确实暗示 TFramedTransport，但 THttpServer 却没有。
因此解决方案是
- 在服务器端也添加
TFramedTransport（推荐） - 如果无法更改服务器，则从客户端删除它
如果您必须选择第二种情况，请考虑将 TFramedTransport 替换为 TBufferedTransport，这几乎同样有效，但对线路格式没有任何影响。