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瀹㈡埗绔柟妗�1锛氭噳(y墨ng)鐢ㄥ堡 Ack 娑堟伅

閫欏€�(g猫)鏂规鍙互绨�(ji菐n)鍠悊瑙ｇ偤锛屽皣 TCP 鐨� Ack 娴佺▼鍐嶈蛋涓€閬�锛屽湪鎳�(y墨ng)鐢ㄥ堡涔熸(g貌u)寤轰竴鍊�(g猫) Ack 娑堟伅锛屽湪鎳�(y墨ng)鐢ㄥ堡鍙潬鎬у緱鍒扮⒑瑾�(r猫n)锛堜竴鑸互瀛樺叆 db 鐐烘簴(zh菙n)锛屾洿婧�(zh菙n)纰鸿(shu艒)鏄簨鍕�(w霉)鎻愪氦鎴愬姛鐨勫洖瑾�(di脿o)鍑芥暩(sh霉)锛変箣鍚庡啀鐧�(f膩)閫侀€欏€�(g猫) Ack 娑堟伅锛孲erver 鏀跺埌鎳�(y墨ng)鐢ㄥ堡 Ack 娑堟伅涔嬪悗鎵嶈獚(r猫n)鐐� Receiver 宸叉敹鍒帮紝鍚﹀墖涔熼噰鍙栨煇绋瓥鐣ラ噸鐧�(f膩)娑堟伅銆�

鍏烽珨鍒� IM App 鐣�(d膩ng)涓�锛屾帴鏀剁鎺ュ彈鍒� Server 鐨� Message锛屽皣 Message 瀛樺叆 db锛屽湪纰鸿獚(r猫n)鍥炶(di脿o)閲岀櫦(f膩)閫� Ack Receive 娑堟伅锛孲erver 鏀跺埌 Ack Receive 鍗宠獚(r猫n)鐐烘秷鎭凡缍�(j墨ng)鍙潬鎶甸仈(d谩)锛屽惁鍓囨渻(hu矛)鍦ㄦ煇鍊�(g猫)鏅�(sh铆)姗�(j墨)閲嶆柊鎺ㄩ€侊紙姣斿瀹㈡埗绔噸閫ｆ湇鍕�(w霉)鍣ㄦ檪(sh铆)鍊� Pull锛屾瘮濡傛湁鏂版秷鎭檪(sh铆) Server Push锛夈€�

瀹㈡埗绔柟妗�2锛氭噳(y墨ng)鐢ㄥ堡 Seq ID

閫欏€�(g猫)鏂规鍜屼笂闈笉鍚�锛屼絾涔熸槸鍦ㄦ噳(y墨ng)鐢ㄥ堡鎿嶄綔銆傛垜鍊戝€�(g猫)姣忓€�(g猫) Message 鍒嗛厤涓€鍊�(g猫) Seq ID锛岄€欏€�(g猫) Seq ID 灏�(du矛)浜庡柈鍊�(g猫)鐢ㄦ埗鐨勬帴鍙楁秷鎭殜(du矛)鍒椾締(l谩i)瑾�(shu艒)鏄€ｇ簩(x霉)鐨勶紝濡傛灉 Message A 鍜� Message B 鏄浉閯扮殑锛岄偅涔� MsgBSeqID = MsgASeqID + 1銆傛瘡娆″瓨鍏� db 鐨勬檪(sh铆)鍊欐洿鏂� db 閲岀殑 LastReceivedSeqID锛孡astReceivedSeqID 鍗崇偤涓婁竴姊濆(xi臎)鍏ユ暩(sh霉)鎿�(j霉)搴�(k霉)娑堟伅鐨� Seq ID銆�

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鏈枃灏忕祼(ji茅)

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