LINUX下判断socket连接状态如何去判断？有现成函数吗
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绛旓細-a 鏄剧ず鎵鏈socket锛屽寘鎷鍦ㄧ洃鍚殑銆-c 姣忛殧1绉掑氨閲嶆柊鏄剧ず涓閬嶏紝鐩村埌鐢ㄦ埛涓柇瀹冦-i 鏄剧ず鎵鏈夌綉缁滄帴鍙ｇ殑淇℃伅锛屾牸寮忓悓鈥渋fconfig -e鈥濄-n 浠ョ綉缁淚P鍦板潃浠ｆ浛鍚嶇О锛屾樉绀哄嚭缃戠粶杩炴帴鎯呭舰銆-r 鏄剧ず鏍稿績璺敱琛紝鏍煎紡鍚屸渞oute -e鈥濄-t 鏄剧ずTCP鍗忚鐨勮繛鎺ユ儏鍐点-u 鏄剧ずUDP鍗忚鐨勮繛鎺ユ儏鍐点-v 鏄剧ず姝ｅ湪...
绛旓細绗竴,涓嶇鏈嶅姟鍣ㄨ繕鏄鎴风鏂紑杩炴帴,鍙︿竴绔繀瀹氫細鏀跺埌socket杩炴帴鏂紑鐨勫紓甯 绗簩,鍦╯ocket鍙戦佹暟鎹墠,鍙互妫鏌 socket.isConnected() 鏉ュ垽鏂繛鎺ユ槸鍚﹀瓨鍦 绗笁,鍋囪鏈嶅姟鍣ㄦ病鏈夊紑鍚,connect鍔ㄤ綔灏变笉搴旇浼氭墽琛屼笅鍘,鐩存帴灏辨姏閿欎簡
绛旓細瀹炰緥3:鍒楀嚭鎵鏈夋墦寮鐨勭綉缁杩炴帴绔彛 鍛戒护:ss -l 杈撳嚭: 浠ｇ爜濡備笅: [root@localhost ~]# ss -l Recv-Q Send-Q Local Address:Port Peer Address:Port 0 0 127.0.0.1:smux *:* 0 0 *:3690 *:* 0 0 *:ssh *:* [root@localhost ~]# 瀹炰緥4:鏌ョ湅杩涚▼浣跨敤鐨socket 鍛戒护:ss -pl 杈撳嚭: 浠ｇ爜濡備笅: [...
绛旓細Linux绯荤粺涓紝ss鍛戒护鍙敤浜庢煡鐪嬬郴缁熺殑socket鐨勭姸鎬併1銆佸懡浠ゆ牸寮忥細ss 锛诲弬鏁帮冀ss 锛诲弬鏁帮冀 锛昏繃婊わ冀2銆佸懡浠ゅ姛鑳斤細ss锛圫ocket Statistics鐨勭缉鍐欙級鍛戒护鍙互鐢ㄦ潵鑾峰彇 socket缁熻淇℃伅锛屾鍛戒护杈撳嚭鐨勭粨鏋滅被浼间簬 netstat杈撳嚭鐨勫唴瀹癸紝浣嗗畠鑳芥樉绀烘洿澶氭洿璇︾粏鐨 TCP杩炴帴鐘舵佺殑淇℃伅锛屼笖姣 netstat 鏇村揩閫熼珮鏁堛傚畠浣跨敤浜...
绛旓細getsockopt() ,璇ュ嚱鏁扮敤浜庤幏鍙栦换鎰忕被鍨嬨佷换鎰忕姸鎬佸鎺ュ彛鐨勯夐」褰撳墠鍊硷紝骞舵妸缁撴灉瀛樺叆optval銆
绛旓細澧炲姞瀵筁inux socket杩炴帴 鏈杩戠殑涓涓」鐩殑鏈澶ц繛鎺ユ暟鏄ā鎷熷涓鎺ュ瓧鐨勫鎴风鍜屾湇鍔″櫒涔嬮棿鐨勯氫俊銆 Linux绯荤粺鐢变簬Linux鐨闄愬埗锛/鍦╥nclude / linux / posix_types.h鏂囦欢涓湁濡備笅鐨勫畯瀹氫箟锛 #UNDEF __FD_SETSIZE 鐨#define __FD_SETSIZE 1024 杩欎釜瀹忔槸褰撲綘闇瑕佽秴杩1024涓狥D锛屽select...
绛旓細1. 鏍规嵁ERRNO鍜宺ecv缁撴灉杩涜鍒ゆ柇 鍦║NIX/LINUX涓锛岄潪闃诲妯″紡SOCKET鍙互閲囩敤recv+MSG_PEEK鐨勬柟寮忚繘琛屽垽鏂紝鍏朵腑MSG_PEEK淇濊瘉浜嗕粎浠呰繘琛岀姸鎬佸垽鏂紝鑰屼笉褰卞搷鏁版嵁鎺ユ敹 瀵逛簬涓诲姩鍏抽棴鐨凷OCKET, recv杩斿洖-1锛岃屼笖errno琚疆涓9锛#define EBADF 9 /* Bad file number */锛夋垨104 锛#define ECONNRESET 104 ...
绛旓細include <sys/socket.h> include <sys/wait.h> include <netdb.h> define PORT 3490 /* 瀹㈡埛鏈杩炴帴杩滅▼涓绘満鐨勭鍙 */ define MAXDATASIZE 100 /* 姣忔鍙互鎺ユ敹鐨勬渶澶у瓧鑺 */ int main(int argc, char *argv[]){ int sockfd, numbytes;char buf[MAXDATASIZE];struct hostent *he;struct ...
绛旓細鍥炵瓟锛氭垜鏈杩戜篃鍦ㄧ湅杩欎釜,鎴戞兂杩欎釜璺熶綘涓婇潰鍐欏緱浠ｇ爜鏄病鏈夌洿鎺ュ叧绯荤殑,鍙兘璺熶綘璇寸殑鈥滃叾浠栬鏄庘濇湁鍏,鍥犱负ET妯″紡涓,璇绘暟鎹槸鈥滄湁鏁版嵁鍙鈥濆拰鈥滄病鏈夋暟鎹彲璇烩濅袱绉嶇姸鎬佹敼鍙樹骇鐢熺殑浜嬩欢鍝嶅簲,濡傛灉浣犲湪涓婃鐨勮涓病鏈夋妸鏁版嵁璇荤┖,鎺ョ潃鏉ユ暟鎹殑鏃跺欎緷鐒舵槸鍙鐘舵,涔熷氨鏄瀵逛簬绋嬪簭鏉ヨ,鐘舵佹病鏈夋敼鍙樺氨娌℃湁...
绛旓細// 鍏抽棴杩炴帴 close(client_fd);close(server_fd);return 0;} 鍦ㄨ繖涓緥瀛愪腑锛屾湇鍔″櫒棣栧厛鍒涘缓涓涓socket瀵硅薄锛屽苟缁戝畾鍒颁竴涓壒瀹氱殑绔彛涓婏紙杩欓噷鏄8080锛夈傜劧鍚庯紝鏈嶅姟鍣ㄥ紑濮嬬洃鍚繛鎺ヨ姹傘傚綋瀹㈡埛绔彂璧疯繛鎺ヨ姹傛椂锛屾湇鍔″櫒鎺ュ彈璇锋眰锛屽苟杩斿洖涓涓鎴风鐨剆ocket鎻忚堪绗︺傛帴涓嬫潵锛屾湇鍔″櫒閫氳繃杩欎釜socket鎻忚堪绗︽帴鏀...
