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aol和icq使用的oscar协议详细介绍

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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_01_06.html">SNAC(01,06)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server for rate limits info</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_01_07.html">SNAC(01,07)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server sends rate limits information</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_01_08.html">SNAC(01,08)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ack connection rate limits</td>
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<td><b><font size=2 color="white">&nbsp;<a name="L0003"></a>Login stage III: Services setup&nbsp;</font></b></td>
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&nbsp;&nbsp;&nbsp;&nbsp;
Most of the services has limitations which you can request via SNAC(xx,02). For 
example client should know max_contact_buddies for BLM service. ICBM service 
has message default limits and client can change them as you need. Client also 
should send its capabilities list to Location service.
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<table width=100% cellSpacing=2 cellPadding=0 border=0><tr><td bgcolor=#7070D0><b><font size=2 color=white>&nbsp;Protocol negotiation</font></b></td></tr>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_02_02.html">SNAC(02,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server location service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_02_03.html">SNAC(02,03)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server replies via location service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_02_04.html">SNAC(02,04)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client sends its <a href="capabilities.html">capabilities</a> / profile to server</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_03_02.html">SNAC(03,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server BLM service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_03_03.html">SNAC(03,03)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server replies via BLM service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_04_04.html">SNAC(04,04)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server for ICBM service parameters</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_04_05.html">SNAC(04,05)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server sends ICBM service parameters to client</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_04_02.html">SNAC(04,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client change default ICBM parameters command</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_09_02.html">SNAC(09,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server PRM service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_09_03.html">SNAC(09,03)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server sends PRM service limitations to client</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_13_02.html">SNAC(13,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client ask server for SSI service limitations</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_13_03.html">SNAC(13,03)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server sends SSI service limitations to client</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_13_05.html">SNAC(13,05)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client check if its local SSI copy is up-to-date</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&lt;&lt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_13_0f.html">SNAC(13,0F)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Server tell client its local copy up-to-date</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_13_07.html">SNAC(13,07)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client activates server SSI data</td>
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&nbsp;&nbsp;&nbsp;&nbsp;
Note that this order is not strict and client can send several requests and then 
wait for replies. But it should remember about rate limitations.<br><br>

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<td><b><font size=2 color="white">&nbsp;<a name="L0004"></a>Login stage IV: Final actions&nbsp;</font></b></td>
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&nbsp;&nbsp;&nbsp;&nbsp;
This is last login actions you should perform. ICQ client at this stage set its 
DC information and status on main connection via 
<a href="snac_01_1e.html">SNAC(01,1E)</a>. Login sequence finishes by client ready 
<a href="snac_01_02.html">SNAC(01,02)</a> which contain version/build numbers for 
protocol dlls.
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<table width=100% cellSpacing=2 cellPadding=0 border=0><tr><td bgcolor=#7070D0><b><font size=2 color=white>&nbsp;Final actions</font></b></td></tr>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_01_1e.html">SNAC(01,1E)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client sends its DC info and status to server</td>
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<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b>&gt;&gt;</b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;<b><a href="snac_01_02.html">SNAC(01,02)</a></b></td>
<td bgcolor=#f9f9f9 valign=top>&nbsp;&nbsp;Client READY command</td>
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&nbsp;&nbsp;&nbsp;&nbsp;
After SNAC(01,02) client command server start broadcast client presence to its 
buddies and client start receiving messages and presence notifications. ICQ 
client should also <a href="sequences.html#offline_msgs">check</a> for offline 
messages.
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