addr2line涔熷彲浠ユ牴鎹寚浠ゅ湴鍧€瀹氫綅C浠ｇ爜瀵瑰簲鐨勮錛屼絾鏄浜嶬ernel module鍗翠笉鏄緢鏂逛究錛屼嬌鐢╣db灝辮瀹規(guī)槗寰楀銆?br />
NOTE錛?span style="color: red;">鍦ㄤ嬌鐢╣db瀹氫綅C浠ｇ爜涔嬪墠闇€瑕佸紑鍚?g閫夐」緙栬瘧鍐呮牳鎴栬€卪odule
渚嬪鏈夎繖鏍風殑Call Trace
Call Trace:
[<8033265c>] dump_stack+0x8/0x30
[<8003abbc>] warn_slowpath_common+0x70/0x98
[<80041f10>] local_bh_enable_ip+0x98/0xec
[<c13f1c6c>] ieee80211_alloc_node+0x29c/0x47c [umac]
[<c13f1f70>] ieee80211_reset_bss+0x58/0x154 [umac]
[<c13f7c84>] ieee80211_vap_attach+0x20/0x68 [umac]
[<c14096cc>] ath_vap_create+0x430/0x6b0 [umac]
[<c13f7290>] wlan_vap_create+0x58/0x210 [umac]
[<c14686e8>] osif_ioctl_create_vap+0x268/0x790 [umac]
[<c14597b0>] ath_ioctl+0x134/0x94c [umac]
[<8022db50>] dev_ioctl+0x28c/0x88
鐜板湪鎯沖畾浣嶆寚浠わ細
[<80041f10>] local_bh_enable_ip+0x98/0xec
鍙互榪欐牱鍋氾細
$ mips-linux-gdb vmlinux
GNU gdb 6.8
Copyright (coffee) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i386-pc-linux-gnu --target=mips-linux-uclibc"...
杈撳叆鍛戒護
(gdb) list *(local_bh_enable_ip+0x98)
gdb榪斿洖緇撴灉
0x80041f10 is in local_bh_enable_ip (kernel/softirq.c:216).
211
212 EXPORT_SYMBOL(_local_bh_enable);
213
214 static inline void _local_bh_enable_ip(unsigned long ip)
215 {
216 WARN_ON_ONCE(in_irq() || irqs_disabled());
217 #ifdef CONFIG_TRACE_IRQFLAGS
218 local_irq_disable();
219 #endif
220 /*
(gdb)
]]>
0.鍙湁涓€涓枃浠?br />
# 鍙橀噺鐨勫畾涔夛紝鏂逛究浣跨敤
CC = gcc
CCFLAGS = -O2 -s
BIN = test
OBJ = root_password_tool_win32.o
$(BIN) : $(OBJ)
$(CC) $(CCFLAGS) -o test $(OBJ)
$(OBJ) : root_password_tool_win32.c
$(CC) $(CCFLAGS) -c root_password_tool_win32.c
.PHONY : clean
clean :
-rm $(BIN) $(OBJ)
CC = gcc
CCFLAGS = -O2 -s
BIN = test
OBJ = root_password_tool_win32.o
$(BIN) : $(OBJ)
$(CC) $(CCFLAGS) -o test $(OBJ)
$(OBJ) : root_password_tool_win32.c
$(CC) $(CCFLAGS) -c root_password_tool_win32.c
.PHONY : clean
clean :
-rm $(BIN) $(OBJ)
1.綆€鍗曠紪璇戝懡浠よ紼嬪簭錛?(CC)鍓嶉潰鏄痶ab錛屼笉鏄痵pace
涓€鍏變簲涓枃浠訛細
test.c
md5.c md5.h
password.c password.h
main鍑芥暟鍦╰est.c涓紝test.c鏂囦歡include浜唌d5.h鍜宲assword.h
CC = gcc
CCFLAGS = -O2 -s
BIN = password
OBJ = md5.o password.o test.o
$(BIN) : $(OBJ)
$(CC) $(CCFLAGS) -o password $(OBJ)
md5.o : md5.c md5.h
$(CC) $(CCFLAGS) -c md5.c
password.o : password.c password.h
$(CC) $(CCFLAGS) -c password.c
test.o : test.c
$(CC) $(CCFLAGS) -c test.c
.PHONY : clean
clean :
-rm $(BIN) $(OBJ)
CCFLAGS = -O2 -s
BIN = password
OBJ = md5.o password.o test.o
$(BIN) : $(OBJ)
$(CC) $(CCFLAGS) -o password $(OBJ)
md5.o : md5.c md5.h
$(CC) $(CCFLAGS) -c md5.c
password.o : password.c password.h
$(CC) $(CCFLAGS) -c password.c
test.o : test.c
$(CC) $(CCFLAGS) -c test.c
.PHONY : clean
clean :
-rm $(BIN) $(OBJ)
make # 緙栬瘧寰楀埌password.exe錛岃繖閲屽湪windows涓媍igwin+mingw鐜涓紪璇?br />make clean # 娓呯悊緙栬瘧鐢熸垚鐨?.o絳夋枃浠?br />
2.浣跨敤g++緙栬瘧win32紼嬪簭鐨凪akefile錛屽叾涓畝鍐欎簡涓€浜涳紝鍙互瀵規(guī)瘮1鐪嬬湅涓嶅悓涔嬪
璇存槑錛?br /> (0)鎸囧畾闈欐€佸簱鐩綍錛岃繛鎺ラ潤鎬佸簱libcomctl32.a緙栬瘧紼嬪簭
(1)緙栬瘧windows璧勬簮鏂囦歡(浣跨敤mingw鐨剋indres)
(2)浣跨敤-mwindows緙栬瘧閫夐」鍘婚櫎寮瑰嚭鐨刢md紿楀彛
CC = g++
# -O2 : optimization option
# -s : build small binary
# -mwindows : use this option to remove the popping cmd window
CCFLAGS = -O2 -s -mwindows
BIN = test
WINDRES = windres
RES = resource.o
OBJ = main.o md5.o password.o $(RES)
# where is your mingw library?
LIBPATH = 'C:\Program Files\CodeBlocks\MinGW\lib\'
LIBS=-L$(LIBPATH) -lcomctl32
RM = -rm
$(BIN): $(OBJ)
$(CC) $(CCFLAGS) -o $(BIN) $(OBJ) $(LIBS)
main.o: main.cpp
md5.o: md5.cpp md5.h
password.o: password.cpp password.h
# 緙栬瘧璧勬簮鏂囦歡
$(RES): resource.rc rpt.ico manifest
$(WINDRES) -o $(RES) resource.rc
.PHONY:clean
clean:
$(RM) $(BIN) $(OBJ)
# -O2 : optimization option
# -s : build small binary
# -mwindows : use this option to remove the popping cmd window
CCFLAGS = -O2 -s -mwindows
BIN = test
WINDRES = windres
RES = resource.o
OBJ = main.o md5.o password.o $(RES)
# where is your mingw library?
LIBPATH = 'C:\Program Files\CodeBlocks\MinGW\lib\'
LIBS=-L$(LIBPATH) -lcomctl32
RM = -rm
$(BIN): $(OBJ)
$(CC) $(CCFLAGS) -o $(BIN) $(OBJ) $(LIBS)
main.o: main.cpp
md5.o: md5.cpp md5.h
password.o: password.cpp password.h
# 緙栬瘧璧勬簮鏂囦歡
$(RES): resource.rc rpt.ico manifest
$(WINDRES) -o $(RES) resource.rc
.PHONY:clean
clean:
$(RM) $(BIN) $(OBJ)
3.緙栬瘧闈欐€佸簱
鍏朵腑涓€浜?<錛?^, $@鏄疢akefile鐨勮嚜鍔ㄥ寲鍙橀噺錛岃緇嗕簡瑙ｅ彲浠ョ湅銆婅窡鎴戜竴璧峰啓Makefile銆嬬殑絎簲绔?br />
CC = g++
# -g : for debug
CFLAGS = -g -O2 -Wall -DPOSIX
TARGET = libutp.a
.cpp.o:
$(CC) -c $(CFLAGS) $<
all: $(TARGET)
libutp.a: $(OBJS)
ar cru $@ $^
ranlib $@
.PHONY : clean
clean :
-rm *.o $(TARGET)
OBJS = utp.o utp_utils.o
# -g : for debug
CFLAGS = -g -O2 -Wall -DPOSIX
TARGET = libutp.a
.cpp.o:
$(CC) -c $(CFLAGS) $<
all: $(TARGET)
libutp.a: $(OBJS)
ar cru $@ $^
ranlib $@
.PHONY : clean
clean :
-rm *.o $(TARGET)
4.緙栬瘧鍔ㄦ€佸簱
(0)windows涓嬩嬌鐢╩ingw緙栬瘧dll鍔ㄦ€佸簱
(1)linux涓嬬紪璇憇o鍔ㄦ€佸簱
5.緙栬瘧澶氫釜鐩爣錛?-2鍧囨槸緙栬瘧鍗曚釜鐩爣
(0) 娣誨姞澶存枃浠剁洰褰?br />(1) 浣跨敤鑷繁緙栬瘧鐨勯潤鎬佸簱libutp.a
浠ヤ笂浠呬緵鍙傝€?img src ="http://www.aygfsteel.com/canvas/aggbug/390880.html" width = "1" height = "1" />(0)windows涓嬩嬌鐢╩ingw緙栬瘧dll鍔ㄦ€佸簱
CC = g++
OBJS = utp.o utp_utils.o
CCFLAGS = -fno-exceptions -fno-rtti -Wall -g -lwsock
TARGET = libutp.dll
all: $(TARGET)
$(TARGET): $(OBJS)
-rm -f $(TARGET)
$(CC) -shared -o $(TARGET) $(OBJS) -lws2_32
.cpp.o:
$(CC) -c -DPOSIX -fpic -I . -I utp_config_lib $(CCFLAGS) $<
.PHONY: clean
clean:
-rm -f $(OBJS) $(TARGET)
OBJS = utp.o utp_utils.o
CCFLAGS = -fno-exceptions -fno-rtti -Wall -g -lwsock
TARGET = libutp.dll
all: $(TARGET)
$(TARGET): $(OBJS)
-rm -f $(TARGET)
$(CC) -shared -o $(TARGET) $(OBJS) -lws2_32
.cpp.o:
$(CC) -c -DPOSIX -fpic -I . -I utp_config_lib $(CCFLAGS) $<
.PHONY: clean
clean:
-rm -f $(OBJS) $(TARGET)
(1)linux涓嬬紪璇憇o鍔ㄦ€佸簱
CC = g++
OBJS = utp.o utp_utils.o
CCFLAGS = -fno-exceptions -fno-rtti -Wall -g
TARGET = libutp.so
all: $(TARGET)
$(TARGET): $(OBJS)
-rm -f $(TARGET)
g++ -shared -o $(TARGET) $(OBJS)
.cpp.o:
g++ -c -DPOSIX -fpic -I . -I utp_config_lib $(CCFLAGS) $<
.PHONY: clean
clean:
-rm -f $(OBJS) CCFLAGS
OBJS = utp.o utp_utils.o
CCFLAGS = -fno-exceptions -fno-rtti -Wall -g
TARGET = libutp.so
all: $(TARGET)
$(TARGET): $(OBJS)
-rm -f $(TARGET)
g++ -shared -o $(TARGET) $(OBJS)
.cpp.o:
g++ -c -DPOSIX -fpic -I . -I utp_config_lib $(CCFLAGS) $<
.PHONY: clean
clean:
-rm -f $(OBJS) CCFLAGS
5.緙栬瘧澶氫釜鐩爣錛?-2鍧囨槸緙栬瘧鍗曚釜鐩爣
(0) 娣誨姞澶存枃浠剁洰褰?br />(1) 浣跨敤鑷繁緙栬瘧鐨勯潤鎬佸簱libutp.a
CC = g++
CFLAGS = -g
LIBUTP_PATH = /home/actiontec/workspace/code_reading/third_party/libutp/lib
INCLUDES = -I${LIBUTP_PATH}
LIBS = -L$(LIBUTP_PATH) -lutp -lpthread -lrt
TARGET = all
all: server client
server: server.cpp
$(CC) $(CFLAGS) -o $@ $^ $(INCLUDES) $(LIBS)
client: client.cpp
$(CC) $(CFLAGS) -o $@ $^ $(INCLUDES) $(LIBS)
.PHONY : clean
clean:
-rm *.o server client
CFLAGS = -g
LIBUTP_PATH = /home/actiontec/workspace/code_reading/third_party/libutp/lib
INCLUDES = -I${LIBUTP_PATH}
LIBS = -L$(LIBUTP_PATH) -lutp -lpthread -lrt
TARGET = all
all: server client
server: server.cpp
$(CC) $(CFLAGS) -o $@ $^ $(INCLUDES) $(LIBS)
client: client.cpp
$(CC) $(CFLAGS) -o $@ $^ $(INCLUDES) $(LIBS)
.PHONY : clean
clean:
-rm *.o server client
]]>
榪欓噷綆€鍗曠殑璁ㄨ涓€涓媕ava璁捐緗戠粶紼嬪簭涓浣曟帶鍒朵笂浼犲拰涓嬭澆閫熷害錛屾垜浠父瑙佺殑FTP錛孒TTP錛孊T絳夊崗璁兘鏄疶CP鐨勶紝浣嗘槸鐜板湪嫻佽鐨剈torrent鍗村熀浜嶶DP瀹炵幇浜嗚嚜宸盪TP鍗忚(UDP+鎷ュ鎺у埗)錛屼笉綆′嬌鐢ㄤ粈涔堝崗璁紝绔欏湪I/O鐨勮搴︽潵璇達紝闄愰€熺殑鎺у埗鎬濊礬閮芥槸涓€鏍風殑銆?br />
鎬濊礬寰堢畝鍗曪紝濡備笅錛?br />
1.鍋囪涓嬭澆鎴栬€呬笂浼犻€熷害涓婇檺鏄痬 (KB/s),閭ｄ箞鍙戦€佷竴涓浐瀹氱殑瀛楄妭鏁版嵁(鍋囪鏄痭瀛楄妭)鐨勬椂闂磋姳璐規(guī)槸錛歯/m錛?br /> 2.鍋囪鐜板湪瑕佸彂閫乶瀛楄妭鐨勬暟鎹紝閭ｄ箞鐞嗚鎵€闇€鐨勬椂闂村簲璇ユ槸n/m錛岃€屽湪瀹為檯鎯呭喌涓嬶紝鍙戦€乶瀛楄妭鐨勬暟鎹彧鑺辮垂浜唗縐掞紝閭ｄ箞鍙戦€佽鍙戦€佺嚎紼嬪氨搴旇鐫＄湢n/m-t縐掞紝榪欐牱灝卞熀鏈疄鐜頒簡閫熷害鐨勬帶鍒躲€?br />
浠ｇ爜浠CP涓轟緥
閫熷害鎺у埗
1 package com.actiontec.net.bandwidth;
2
3 /**
4 *
5 * @author Le
6 *
7 */
8 public class BandwidthLimiter {
9
10 /* KB */
11 private static Long KB = 1024l;
12
13 /* The smallest count chunk length in bytes */
14 private static Long CHUNK_LENGTH = 1024l;
15
16 /* How many bytes will be sent or receive */
17 private int bytesWillBeSentOrReceive = 0;
18
19 /* When the last piece was sent or receive */
20 private long lastPieceSentOrReceiveTick = System.nanoTime();
21
22 /* Default rate is 1024KB/s */
23 private int maxRate = 1024;
24
25 /* Time cost for sending CHUNK_LENGTH bytes in nanoseconds */
26 private long timeCostPerChunk = (1000000000l * CHUNK_LENGTH)
27 / (this.maxRate * KB);
28
29 /**
30 * Initialize a BandwidthLimiter object with a certain rate.
31 *
32 * @param maxRate
33 * the download or upload speed in KBytes
34 */
35 public BandwidthLimiter(int maxRate) {
36 this.setMaxRate(maxRate);
37 }
38
39 /**
40 * Set the max upload or download rate in KB/s. maxRate must be grater than
41 * 0. If maxRate is zero, it means there is no bandwidth limit.
42 *
43 * @param maxRate
44 * If maxRate is zero, it means there is no bandwidth limit.
45 * @throws IllegalArgumentException
46 */
47 public synchronized void setMaxRate(int maxRate)
48 throws IllegalArgumentException {
49 if (maxRate < 0) {
50 throw new IllegalArgumentException("maxRate can not less than 0");
51 }
52 this.maxRate = maxRate < 0 ? 0 : maxRate;
53 if (maxRate == 0)
54 this.timeCostPerChunk = 0;
55 else
56 this.timeCostPerChunk = (1000000000l * CHUNK_LENGTH)
57 / (this.maxRate * KB);
58 }
59
60 /**
61 * Next 1 byte should do bandwidth limit.
62 */
63 public synchronized void limitNextBytes() {
64 this.limitNextBytes(1);
65 }
66
67 /**
68 * Next len bytes should do bandwidth limit
69 *
70 * @param len
71 */
72 public synchronized void limitNextBytes(int len) {
73 this.bytesWillBeSentOrReceive += len;
74
75 /* We have sent CHUNK_LENGTH bytes */
76 while (this.bytesWillBeSentOrReceive > CHUNK_LENGTH) {
77 long nowTick = System.nanoTime();
78 long missedTime = this.timeCostPerChunk
79 - (nowTick - this.lastPieceSentOrReceiveTick);
80 if (missedTime > 0) {
81 try {
82 Thread.sleep(missedTime / 1000000,
83 (int) (missedTime % 1000000));
84 } catch (InterruptedException e) {
85 e.printStackTrace();
86 }
87 }
88 this.bytesWillBeSentOrReceive -= CHUNK_LENGTH;
89 this.lastPieceSentOrReceiveTick = nowTick
90 + (missedTime > 0 ? missedTime : 0);
91 }
92 }
93 }
94
2
3 /**
4 *
5 * @author Le
6 *
7 */
8 public class BandwidthLimiter {
9
10 /* KB */
11 private static Long KB = 1024l;
12
13 /* The smallest count chunk length in bytes */
14 private static Long CHUNK_LENGTH = 1024l;
15
16 /* How many bytes will be sent or receive */
17 private int bytesWillBeSentOrReceive = 0;
18
19 /* When the last piece was sent or receive */
20 private long lastPieceSentOrReceiveTick = System.nanoTime();
21
22 /* Default rate is 1024KB/s */
23 private int maxRate = 1024;
24
25 /* Time cost for sending CHUNK_LENGTH bytes in nanoseconds */
26 private long timeCostPerChunk = (1000000000l * CHUNK_LENGTH)
27 / (this.maxRate * KB);
28
29 /**
30 * Initialize a BandwidthLimiter object with a certain rate.
31 *
32 * @param maxRate
33 * the download or upload speed in KBytes
34 */
35 public BandwidthLimiter(int maxRate) {
36 this.setMaxRate(maxRate);
37 }
38
39 /**
40 * Set the max upload or download rate in KB/s. maxRate must be grater than
41 * 0. If maxRate is zero, it means there is no bandwidth limit.
42 *
43 * @param maxRate
44 * If maxRate is zero, it means there is no bandwidth limit.
45 * @throws IllegalArgumentException
46 */
47 public synchronized void setMaxRate(int maxRate)
48 throws IllegalArgumentException {
49 if (maxRate < 0) {
50 throw new IllegalArgumentException("maxRate can not less than 0");
51 }
52 this.maxRate = maxRate < 0 ? 0 : maxRate;
53 if (maxRate == 0)
54 this.timeCostPerChunk = 0;
55 else
56 this.timeCostPerChunk = (1000000000l * CHUNK_LENGTH)
57 / (this.maxRate * KB);
58 }
59
60 /**
61 * Next 1 byte should do bandwidth limit.
62 */
63 public synchronized void limitNextBytes() {
64 this.limitNextBytes(1);
65 }
66
67 /**
68 * Next len bytes should do bandwidth limit
69 *
70 * @param len
71 */
72 public synchronized void limitNextBytes(int len) {
73 this.bytesWillBeSentOrReceive += len;
74
75 /* We have sent CHUNK_LENGTH bytes */
76 while (this.bytesWillBeSentOrReceive > CHUNK_LENGTH) {
77 long nowTick = System.nanoTime();
78 long missedTime = this.timeCostPerChunk
79 - (nowTick - this.lastPieceSentOrReceiveTick);
80 if (missedTime > 0) {
81 try {
82 Thread.sleep(missedTime / 1000000,
83 (int) (missedTime % 1000000));
84 } catch (InterruptedException e) {
85 e.printStackTrace();
86 }
87 }
88 this.bytesWillBeSentOrReceive -= CHUNK_LENGTH;
89 this.lastPieceSentOrReceiveTick = nowTick
90 + (missedTime > 0 ? missedTime : 0);
91 }
92 }
93 }
94
涓嬭澆鎺у埗
1 package com.actiontec.net.bandwidth;
2
3 import java.io.IOException;
4 import java.io.InputStream;
5
6 /**
7 * @author Le
8 *
9 */
10 public class DownloadLimiter extends InputStream {
11 private InputStream is = null;
12 private BandwidthLimiter bandwidthLimiter = null;
13
14 public DownloadLimiter(InputStream is, BandwidthLimiter bandwidthLimiter)
15 {
16 this.is = is;
17 this.bandwidthLimiter = bandwidthLimiter;
18 }
19 @Override
20 public int read() throws IOException {
21 if(this.bandwidthLimiter != null)
22 this.bandwidthLimiter.limitNextBytes();
23 return this.is.read();
24 }
25
26 public int read(byte b[], int off, int len) throws IOException
27 {
28 if (bandwidthLimiter != null)
29 bandwidthLimiter.limitNextBytes(len);
30 return this.is.read(b, off, len);
31 }
32 }
2
3 import java.io.IOException;
4 import java.io.InputStream;
5
6 /**
7 * @author Le
8 *
9 */
10 public class DownloadLimiter extends InputStream {
11 private InputStream is = null;
12 private BandwidthLimiter bandwidthLimiter = null;
13
14 public DownloadLimiter(InputStream is, BandwidthLimiter bandwidthLimiter)
15 {
16 this.is = is;
17 this.bandwidthLimiter = bandwidthLimiter;
18 }
19 @Override
20 public int read() throws IOException {
21 if(this.bandwidthLimiter != null)
22 this.bandwidthLimiter.limitNextBytes();
23 return this.is.read();
24 }
25
26 public int read(byte b[], int off, int len) throws IOException
27 {
28 if (bandwidthLimiter != null)
29 bandwidthLimiter.limitNextBytes(len);
30 return this.is.read(b, off, len);
31 }
32 }
鍚屾牱錛屼笂浼犳帶鍒?/div>
1 package com.actiontec.net.bandwidth;
2
3 import java.io.IOException;
4 import java.io.OutputStream;
5
6 /**
7 * @author Le
8 *
9 */
10 public class UploadLimiter extends OutputStream {
11 private OutputStream os = null;
12 private BandwidthLimiter bandwidthLimiter = null;
13
14 public UploadLimiter(OutputStream os, BandwidthLimiter bandwidthLimiter)
15 {
16 this.os = os;
17 this.bandwidthLimiter = bandwidthLimiter;
18 }
19
20 @Override
21 public void write(int b) throws IOException {
22 if (bandwidthLimiter != null)
23 bandwidthLimiter.limitNextBytes();
24 this.os.write(b);
25 }
26
27 public void write(byte[] b, int off, int len) throws IOException {
28 if (bandwidthLimiter != null)
29 bandwidthLimiter.limitNextBytes(len);
30 this.os.write(b, off, len);
31 }
32
33 }
2
3 import java.io.IOException;
4 import java.io.OutputStream;
5
6 /**
7 * @author Le
8 *
9 */
10 public class UploadLimiter extends OutputStream {
11 private OutputStream os = null;
12 private BandwidthLimiter bandwidthLimiter = null;
13
14 public UploadLimiter(OutputStream os, BandwidthLimiter bandwidthLimiter)
15 {
16 this.os = os;
17 this.bandwidthLimiter = bandwidthLimiter;
18 }
19
20 @Override
21 public void write(int b) throws IOException {
22 if (bandwidthLimiter != null)
23 bandwidthLimiter.limitNextBytes();
24 this.os.write(b);
25 }
26
27 public void write(byte[] b, int off, int len) throws IOException {
28 if (bandwidthLimiter != null)
29 bandwidthLimiter.limitNextBytes(len);
30 this.os.write(b, off, len);
31 }
32
33 }
瀵逛簬涓€涓猅CP socket
1 ServerSocket socket = new ServerSocket();
2 //鍏跺畠鍒濆鍖栫暐
2 //鍏跺畠鍒濆鍖栫暐
1 //浠巗ocket涓互涓€瀹氱殑閫熺巼璇繪暟鎹?br /> 2 //```java
3 DownloadLimiter dl = new DownloadLimiter(socket.getInputStream(), new BandwidthLimiter(6250));
4 is = new DataInputStream(dl);
5
6 //璇繪暟鎹?/span>
7 int len = is.readInt();
8 ByteBuffer buffer = ByteBuffer.allocate(4 + len);
9 buffer.putInt(len);
10 is.readFully(buffer.array(), 4, buffer.remaining());
11 //```
12
13 //浠ヤ竴瀹氱殑閫熺巼鍐欐暟鎹埌socket
14 //```java
15 UploadLimiter ul = new UploadLimiter(socket.getOutputStream(), new BandwidthLimiter(6250));
16 ul.write(
);
17 //```
3 DownloadLimiter dl = new DownloadLimiter(socket.getInputStream(), new BandwidthLimiter(6250));
4 is = new DataInputStream(dl);
5
6 //璇繪暟鎹?/span>
7 int len = is.readInt();
8 ByteBuffer buffer = ByteBuffer.allocate(4 + len);
9 buffer.putInt(len);
10 is.readFully(buffer.array(), 4, buffer.remaining());
11 //```
12
13 //浠ヤ竴瀹氱殑閫熺巼鍐欐暟鎹埌socket
14 //```java
15 UploadLimiter ul = new UploadLimiter(socket.getOutputStream(), new BandwidthLimiter(6250));
16 ul.write(
);17 //```
鍦ㄥ綰跨▼鐜涓嬩篃鍙互浣跨敤涓婅堪鐨勬柟娉曘€傛渶鍚庨檮鍥炬槸浠誨姟綆＄悊鍣ㄧ殑緗戠粶鍒╃敤鐜囧浘6250KB/s錛堜篃灝辨槸50000kb/s,闄勫浘涓綉緇滃埄鐢ㄧ巼涔熷湪5%宸﹀彸錛屾墍浠ュ簲璇ヨ繖涓仛娉曡繕綆楀噯紜級
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PC A: Ubuntu 12.04 LTS錛屼袱鍧楃綉鍗★紝鍒嗗埆涓篹th0鍜宔th1錛屼嬌鐢╡th0榪炴帴
PC B: Windows 7, 涓€鍧楃綉鍗★紝涓篹th0
鐩爣錛?u>
浣垮緱B閫氳繃A榪炴帴浜掕仈緗?IPv4)錛屽嵆瀹炵幇A涓鴻礬鐢卞櫒鐨勫姛鑳?u>
姝ラ錛?u>
PC A:
(0)鍋囪eth0宸茬粡閰嶇疆濂斤紝PC鍙互閫氳繃eth0榪炴帴浜掕仈緗?wbr>錛岄厤緗甧th1涓猴紝濡?etc/network/
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 172.16.10.65
gateway 172.16.10.254
netmask 255.255.0.0
auto eth1
iface eth1 inet static
address 192.168.6.1
netmask 255.255.255.0
network 192.168.6.0
broadcast 192.168.6.255
褰撶劧錛屾垜鏄垹闄や簡network-manager,
浣犱篃鍙互閫氳繃network-manager鏉ラ厤緗€侱NS鏈嶅姟
nameserver 168.95.1.1 #榪欐槸鎴戠殑DNS鏈嶅姟鍣紝浣犲彲浠ラ厤緗垚浣犲彲浠ヨ闂殑錛屽8.8.
閲嶅惎浣犵殑緗戠粶鏈嶅姟鎴栬€呴噸鍚疨C A錛屼互涓婅緗氨鍙互鐢熸晥銆?u>
(1)Linux緋葷粺鑷韓灝辨湁IPv4鍖呰漿鍙戠殑鍔熻兘錛屽湪/
鎵撳紑IPv4杞彂鍔熻兘:
net.ipv4.ip_forward=1
杈撳叆浠ヤ笅鍛戒護浣垮緱涓婇潰鐨勮緗敓鏁?鎴栬€呴噸鍚數(shù)鑴?錛?u>
sudo sysctl -p
(2)閫氳繃iptable瀹炵幇IPv4鍖呰漿鍙?u>
sudo iptables -t nat -A POSTROUTING -s 192.168.6.0/24 -o eth0 -j MASQUERADE
鍙互閫氳繃iptables-save灝唅ptables rule閮戒繚瀛樺埌鏂囦歡涓紝鍦ㄩ€氳繃iptables-
鍙互鑷繁鍐欎竴涓剼鏈潵瀹炵幇iptables鑷姩鐨勮澆鍏ule錛?wbr>鎴栬€呮壘鍒癷ptables鐨勯厤緗枃浠舵潵淇敼
PC B
(0)灝哖C B鐨別th0涓嶱C A鐨別th1鐢ㄧ綉綰跨洿鎺ヨ繛鎺ワ紝閰嶇疆PC B鐨別th0涓猴細
IP ADDRESS : 192.168.6.101
SUBNET MASK: 255.255.255.0
GATE WAY : 192.168.1.1i
DNS Server : 168.95.1.1
榪欐牱PC B灝卞彲浠ラ€氳繃PC A榪炴帴浜掕仈緗戜簡
澧炲己閰嶇疆錛?u>
璺敱鍣ㄩ兘鍙互鑷姩緇橮C鍒嗛厤IP錛岃€屼笉闇€瑕佹墜鍔ㄩ厤緗甀P錛?wbr>榪欐槸閫氳繃DHCP鏉ュ疄鐜扮殑銆傚鏋滀篃瑕佸疄鐜扮浉鍚岀殑鍔熻兘錛岄偅
灝遍渶瑕佸湪PC A涓婃惌寤轟竴涓狣HCP鏈嶅姟鍣ㄣ€?u>
(0)瀹夎DHCP鏈嶅姟鍣?u>
sudo apt-get install isc-dhcp-common isc-dhcp-server
(1)閰嶇疆DHCP
(i)淇敼/etc/default/isc-dhcp-
INTERFACES="eth1"
(ii)淇敼/etc/dhcp/dhcpd.conf
subnet 192.168.6.0 netmask 255.255.255.0 {
range 192.168.6.100 192.168.6.200;
option routers 192.168.6.1;
option broadcast-address 192.168.6.255;
option domain-name-servers 168.95.1.1;
default-lease-time 600;
max-lease-time 7200;
}
(2)PC B鍙互鑷姩鑾峰彇IP浜嗭紝濡傛灉鍦≒C A鐨別th1涓婃帴涓€涓猻witch錛屾帴鍦╯witch涓婃墍鏈夌殑P
2銆乭ttp://www.iteye.com/topic/802638
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