<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <HTML ><HEAD ><TITLE >What it looks like</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="FreeTDS User Guide" HREF="index.htm"><LINK REL="UP" TITLE="The interfaces File" HREF="interfacesfile.htm"><LINK REL="PREVIOUS" TITLE="What it does" HREF="interfacespurpose.htm"><LINK REL="NEXT" TITLE="About Unicode, UCS-2, and UTF-8" HREF="aboutunicode.htm"><LINK REL="STYLESHEET" TYPE="text/css" HREF="userguide.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" ><SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > User Guide: A Guide to Installing, Configuring, and Running <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="interfacespurpose.htm" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Appendix B. The <TT CLASS="FILENAME" >interfaces</TT > File</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="aboutunicode.htm" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="INTERFACESFORMAT" >What it looks like</A ></H1 ><P >The format of the <TT CLASS="FILENAME" >interfaces</TT > file is borrowed directly from that used by Sybase on Unix platforms (<SPAN CLASS="PRODUCTNAME" >Windows</SPAN > has a different format). Additionally, we have overloaded one of the fields to add the ability to set the protocol version. An example <TT CLASS="FILENAME" >interfaces</TT > file looks like this.</P ><P ><DIV CLASS="EXAMPLE" ><A NAME="E.G.INTERFACESFILE" ></A ><P ><B >Example B-1. An <TT CLASS="FILENAME" >interfaces</TT > file example</B ></P ><PRE CLASS="PROGRAMLISTING" > myserver query tcp 4.2 127.0.0.1 4000 master tcp ether 127.0.0.1 4000 </PRE ></DIV ></P ><P >The entry starts with the servername beginning in the first column (no whitespace preceding it). Following the servername are one or more services lines which <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >must</I ></SPAN > be indented with whitespace. <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > uses only the query line, although others may be present to retain compatibility with Sybase. </P ><P >The fields in the services lines are as follows. <DIV CLASS="TABLE" ><A NAME="TAB.SERVICES.LINE" ></A ><P ><B >Table B-1. Services Line</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Example</TH ><TH >Meaning</TH ></TR ></THEAD ><TBODY ><TR ><TD >service</TD ><TD >query</TD ><TD >The only supported service</TD ></TR ><TR ><TD >transport</TD ><TD >tcp</TD ><TD >The transport protocol to use. Only tcp is supported by <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN >.</TD ></TR ><TR ><TD >physical</TD ><TD >4.2</TD ><TD >Historically this field referred the physical/datalink layer, however it appears to simply a comment field. Therefore, <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > optionally uses it to specify the protocol version to connect with.</TD ></TR ><TR ><TD >hostname/IP</TD ><TD >127.0.0.1</TD ><TD >The hostname or IP address where the <SPAN CLASS="PRODUCTNAME" >SQL Server</SPAN > resides.</TD ></TR ><TR ><TD >port</TD ><TD >4000</TD ><TD >The TCP port where the <SPAN CLASS="PRODUCTNAME" >SQL Server</SPAN > is listening.</TD ></TR ></TBODY ></TABLE ></DIV ></P ><P >In the example above, the <TT CLASS="LITERAL" >hostname</TT > was entered as an IP address. It needn't be; it could just as well be a name. <SPAN CLASS="PRODUCTNAME" >FreeTDS</SPAN > can use a name rather than an address; it will just let the network (specifically, the <SPAN CLASS="APPLICATION" >resolver</SPAN > get the address.</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="interfacespurpose.htm" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.htm" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="aboutunicode.htm" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >What it does</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="interfacesfile.htm" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >About Unicode, UCS-2, and UTF-8</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
