Question

我正在Windows PC和Linux设备之间运行SSH会话。 SSH连接的创建是通过Python完成的。连接后，SSH会话将从Thar接收来自Thar的命令。这是一般想法。一切正常，但是在我发送命令之后，它似乎在流中“卡住了”，而我正在发送的所有其他命令正在发送先前的值。我试过使用冲洗（代码中提到），但仍然没有结果：

用于建立SSH会话的Python代码：

导入线程，paramiko 从paramiko导入客户端导入时间 ssh类：客户=无外壳=无

SELECT oo.ObjectId
FROM    dbo.ObjectOwner oo
GROUP BY oo.ObjectId
HAVING NOT EXISTS (
    SELECT  1
    FROM    dbo.ObjectOwner
    WHERE   dbo.ObjectOwner.EndDate IS NULL
)

我编写的TCL流程如下：

def __init__(self, address, username):
    print("Connecting to server.")
    cert = paramiko.RSAKey.from_private_key_file("QA-SIP-Evgenyz.pem")
    self.client = client.SSHClient()
    self.client.set_missing_host_key_policy(client.AutoAddPolicy())
    self.client.connect(address, username=username, pkey=cert)
    self.transport = paramiko.Transport((address, 22))
    self.transport.connect(username=username, pkey=cert)
    thread = threading.Thread(target=self.process)
    thread.daemon = True
    thread.start()
    print("Connected")

def closeConnection(self):
    if self.client is not None:
        self.client.close()
        self.transport.close()

def openShell(self):
    self.shell = self.client.invoke_shell()

def sendShell(self, command):
    if self.shell:
        #print("trying to run command " + command)
        self.shell.send(command + "\r")
        time.sleep(0.6)
        #self.shell.send("\r")

    else:
        print("Shell not opened.")

def process(self):
    global connection
    while True:
        # Print data when available
        if self.shell is not None and self.shell.recv_ready():
            alldata = self.shell.recv(1024)
            while self.shell.recv_ready():
                alldata += self.shell.recv(1024)
            strdata = str(alldata, "utf8")
            strdata.replace('\r', '')
            print(strdata, end = "")
            if strdata.endswith("$ "):
                print("\n$ ", end = "")




def main():
IP = '54.171.226.239'
user = 'ubuntu'
a = 0
command = ''
connection = ssh(IP, user)
connection.openShell()
i=0
while 1:
     a = a+1
     if a == 1:
     command ='ls -l'
     connection.sendShell(command)
     command = input('$ ')

上面的proc返回我将用于向外壳发送其他命令的通道ID

    proc open_ssh_connection {} {
     set pystream [open "|bin/python -i MgrLoginCLass.py" r+]
     fconfigure $pystream  -blocking 0
     set flag 0
     while {1} {
        set L [gets $pystream OutPut]
        # Print it to the screen in Tcl
    if {$OutPut != ""} {
        puts "$OutPut \n"
            if {[regexp ".*drwxrwxr-x" $OutPut]== 1} {
                set flag 1
            }

            if {($flag == 1) && ([regexp ".*194:" $OutPut]== 1)} {
                puts "here11"
                set flag 2
                break
            }
    }


}
return $pystream   }

从上面的

可以看出，先前的命令再次发送了一次，而不是存在的。我怀疑通道缓冲区\ flush命令，但是更改它没有帮助，也许我没有按预期更改它。

TCL中的通道缓冲区未清除

0 个答案: