This value overrides the timeout. In this case, no record is returned to the DATA step until data are available. This action can cause your program to go into an infinite loop, so use this value with caution. However, the DATA step does not terminate; it simply tries to read data again. Valid states are:. The valid values are. OFF is the default value. For example:. This option indicates that if an end-of-file EOF character is received from a client, the server should try to connect to the next client.
Under Windows, the default is The value of record-length can range from 1 to 1,,, 1 gigabyte. This option enables you to use nontab character delimiters between variables.
The following values are valid under Windows:. This option specifies how long a named pipe client should wait for a busy pipe. The minimum and default value for seconds is The default is 8 seconds.
This option specifies the mode of a named pipe. An external file is a file created and maintained in the Windows operating environment from which you need to read data.
A ae. A cm. A co. A dc. A dm. A ds. A dt. A dv. A eg. A ex. A lb. A mp. A sc. A se. A sp. A sr. BLOCK is the default value. This option indicates the type of pipe. BYTE is the default value. A time-out occurs when no data is available at the communications port for a period of time, usually 60 seconds. This behavior is the default. This value overrides the time-out.
In this case, no record is returned to the DATA step until data are available. This action can cause your program to go into an infinite loop, so use this value with caution. However, the DATA step does not terminate; it simply tries to read data again. Valid states are:. This option indicates that if an end-of-file EOF character is received from a client, the server should try to connect to the next client. Under Windows, the default is The value of record-length can range from 1 to 1,,, 1 gigabyte.
This option enables you to use nontab character delimiters between variables. The following values are valid under Windows:. This option specifies how long a named pipe client should wait for a busy pipe. The minimum and default value for seconds is This option specifies the mode of a named pipe.
Here are the valid values:. Carriage return line feed. However, named pipes work between SAS and other applications that support named pipes. One Server Connected to One Client. You can start the server or the client first; one waits 30 seconds for the other to connect. The following program is another example of a single client and server. One Server Connected to Several Clients You can choose one server to be connected to several clients. In this case, the named pipe configuration looks like the configuration shown in One Server Connected to Several Clients.
In this configuration, the data connection is initially between the server and the first client. When this connection is terminated, the server connects to the second client, and so on. The connection can return to the first client after the last client's connection is broken if your program is set up to do so. The clients can be on the same PC or on a PC connected across a network. If the default value of BLOCK had been used, then the pipe would wait indefinitely until data were found in the pipe.
A server connects to one client at a time, and the clients queue in a serial order waiting to connect to the server.
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