$B$3$N%Z!<%8$O!"(BWinsock Programmer's FAQ $B$NF|K\8lLu$G$9!#$3$N(B FAQ $B$N86J8$O(BWarren Young $B;a$K$h$k$b$N$G!"(BWinsock Programmer's FAQ$B$N%5%$%H$G8x3+$5$l$F$$$k$b$N$G$9!#$3$N%Z!<%8$G8x3+$7$F$$(B $B$kF|K\8lLu$O!"F1;a$N5v2D$rF@$F!";d(B(Keisuke MORI)$B$,K]Lu!"8x3+$7$F(B $B$$$^$9!#$3$N(B FAQ $B$N%*%j%8%J%k$NNr;K$dCx$B=xJ8(B $B$N>O$r;2>H$7$F2<$5$$!#(B

$B8=;~E@$G$O!"$^$@A4It$N>O$NK]Lu$O40N;$7$F$$$^$;$s!#L$Lu$N>O$O(B $B86J8$N$^$^$G;D$C$F$$$^$9$N$G$4N;>5$/$@$5$$(B($B

$B$J$*!"$3$NF|K\8lLu(BFAQ$B$O!">o$K:G?7$G$"$k$H$$$&J]>Z$O$G$-$^$;$s(B $B$N$G!":G?7$N>pJs$K$D$$$F$OE,59%*%j%8%J%k$N(BFAQ$B$r;2>H$7$F$/$@$5$k(B $B$h$&$K$*4j$$$7$^$9!#$^$?!"F|K\8lLu$K4X$9$k%3%a%s%H!"8mLu$N$4;XE&(B $BEy$O$$$D$G$b4?7^$$$?$7$^$9$N$G!"(B$BLu$B$NJ}$K%a!<%k$rD:$1$l$P9,(B $B$$$G$9!#(B

$B99?7>pJs(B

2002.11.09

$B:G=i$NF|K\8lLu8x3+HG!#86J8$O(B 2001.10.17 $B99?7$NHG$r$b$H$K$7$F$$$^$9!#(B

$BL\<!(B

$BBh(B0$B>O(B - $B=xJ8(B

0.1 $B$b$H$b$H$N=xJ8(B
0.2 $BJ]/$7(B
0.3 $BK!E*$JLdBj$K$D$$$F(B
0.4 $B%_%i!<%5%$%H(B
0.5 $B;d$N5?Ld$,$3$N(B FAQ $B$NCf$K:\$C$F$$$J$$$H$-$O(B?
0.6 $B$3$N(BFAQ$B$N99?7$N$*CN$i$;$r$9$k%a!<%j%s%0%j%9%H$O$"$j$^$9$+(B?
0.7 $B8@8l$NJP$j(B
0.8 $B%W%m%H%3%k$NJP$j(B
0.9 $B

$BBh(B1$B>O(B - Winsock $B$N0lHLE*$J>pJs(B

1.1 Winsock $B$H$O2?$G$9$+(B?
1.2 Winsock $B$H(B TCP/IP $B$H$N0c$$$O2?$G$9$+(B?
1.3 Winsock $B$H(B TCP/IP $B$K$D$$$F$O$I$s$J%K%e!<%9%0%k!<%W$d%a!<%j%s%0%j%9%H$,$"$j$^$9$+(B?
1.4 Winsock 2 $B%a!<%j%s%0%j%9%H$rB`2q$9$k$K$O$I$&$9$l$P$h$$$N$G$9$+(B?
1.5 Winsock $B$K$O$I$s$J%P!<%8%g%s$,$"$k$N$G$9$+(B?
1.6 Winsock 2 $B$K$O$"$k$1$I(B Winsock 1.1 $B$K$OL5$$!"$H$$$&$b$N$K$O2?$,$"$j$^$9$+(B?
1.7 $B;EMM$,<!$K2~D{$5$l$k$N$O$$$D$G$7$g$&$+(B?
1.8 Winsock $B$O(B DECNet$B!"(BIPX/SPX $B$J$I$rC}$k$3$H$O$G$-$^$9$+(B?

$BBh(B2$B>O(B - Winsock $B=i?4pJs(B

2.1 $B%M%C%H>e$GF~
2.2 WSAStartup $B8F$S=P$7$NA0$K(B WSAData $B9=B$BN$r=i4|2=$9$kI,MW$O$"$k$N$G$9$+(B?
2.3 Winsock $B%W%m%0%i%`$r%3%s%Q%$%k$7$h$&$H$9$k$H%j%s%/%(%i!<$,=P$A$c$$$^$7$?!#2?$,0-$$$s$G$7$g$&(B?
2.4 Winsock $B$r;H$C$F=q$$$?%W%m%0%i%`$O!"(BUnix $B$N%=%1%C%H%W%m%0%i%`$HDL?.$G$-$k$N$G$9$+(B?
2.5 Winsock $B$O!X;d$N9%$-$J8@8l!Y$G;H$&$3$H$,$G$-$^$9$+(B?
2.6 Winsock $B%W%m%0%i%`$r%G%P%C%0$9$k$N$K2?$+NI$$%D!<%k$O$"$j$^$;$s$+(B?
2.7 Winsock $B$N%(%i!
2.8 Winsock $B$,$:$C$H(BWSAEWOULDBLOCK$B$P$+$jJV$9$s$G$9$,!"2?$,0-$$$s$G$7$g$&(B?
2.9 $B%M%C%H%o!<%/$N@_Dj$J$7$G(B Winsock $B%"%W%j%1!<%7%g%s$N%F%9%H$r$9$k$3$H$,$G$-$^$9$+(B?
2.10 TCP $B%=%1%C%H$r@5$7$/(B close $B$9$k$K$O$I$&$9$l$PNI$$$N$G$9$+(B?
2.11 $B%3%M%/%7%g%s$r!V0[>o=*N;!W$5$;$k$3$H$O$G$-$^$9$+(B?
2.12 TCP$B%3%M%/%7%g%s$,(B close $B$5$l$?$3$H$r$I$&$d$C$F8!=P$G$-$^$9$+(B?
2.13 $B%M%C%H%o!<%/$N0[>o@ZCG$O$I$N$h$&$K$7$F8!=P$G$-$^$9$+(B?
2.14 Winsock $B4X?t$N%?%$%`%"%&%H$rJQ99$9$k$K$O$I$&$9$k$N$G$9$+(B?
2.15 $B%T!<%/(B(MSG_PEEK)$B$H$O2?
2.16 $BBS0h30%G!<%?(B(MSG_OOB)$B$H$O2?
2.17 MSG_PEEK $B$b(B MSG_OOB $B$b0-

$BBh(B3$B>O(B - Winsock $BCf5i

3.1 Winsock $B$K$*$$$F(B { HTTP, POP3, SMTP, FTP, Telnet, NNTP, $B$J$I(B} $B$O$I$&$d$C$FC}$l$PNI$$$N(B?
3.2 TCP $B%9%H%j!<%`$r(B SSL/TLS $B$G0E9f2=$9$k$K$O$I$&$9$l$P$h$$$N(B?
3.3 Winsock $B%W%m%0%i%`(B $B$G<+J,$N(B IP $B%"%I%l%9$r
3.4 TCP$B$N$h$&$J%9%H%j!<%`%W%m%H%3%k$G!"%Q%1%C%HC10L$N=hM}$r6/@)$9$k$?$a$N@5$7$$J}K!$O(B?
3.5 $B:#%5!<%P$r=q$$$F$$$^$9!#$I$N%]!<%HHV9f$r;H$($P$h$$$N$G$9$+(B?
3.6 UDP $B$C$F2?(B? $B$I$s$J@)8B$,$"$k$N(B?
3.7 UDP$B$O2?$K;H$($k$N(B?
3.8 $B%V%m!<%I%-%c%9%H%Q%1%C%H$O$I$&$d$C$FAw?.$9$k$N$G$9$+(B?
3.9 Winsock $B$O%9%l%C%I%;!<%U$G$9$+(B?
3.10 $B$b$7Fs$D$N%9%l%C%I$,F1$8%=%1%C%H$KBP$7$F(B recv() $B$r8F$S=P$9$H!"$=$l$>$l$K$*$$$FF1$8%G!<%?$,F@$i$l$^$9$+(B?
3.11 $B$"$k%=%1%C%H$K$*$$$F2?$+$,5/$3$C$?$H$-!"$=$l$rFs$D$N%9%l%C%I$KDLCN$9$kJ}K!$O$"$j$^$9$+(B?
3.12 $B%$%s%?!<%M%C%H$K@\B3$5$l$F$$$k$+$I$&$+$r$I$&$d$C$F8!=P$G$-$^$9$+(B?
3.13 $B%m!<%+%k$N%f!<%6L>$r
3.14 Windows 9x $B$N%@%$%"%k%"%C%W@\B3$,!"I,MW$NL5$$$H$-$G$b<+F0%@%$%d%k$N%&%#%s%I%&$r=P$7$F$-$^$9!#$3$l$r;_$a$k$3$H$O$G$-$^$9$+(B?
3.15 $BHsF14|7?%=%1%C%H$O?.Mj$G$-$J$$!"$HJ9$$$?$3$H$,$"$j$^$9!#$=$l$C$FK\Ev$G$9$+(B?
3.16 Nagle $B%"%k%4%j%:%`$H$O2?$G$9$+(B?
3.17 Nagle $B%"%k%4%j%:%`$r%*%U$K$9$Y$-$J$N$O$I$s$J$H$-$G$7$g$&(B?
3.18 TCP $B$N0\F0%&%#%s%I%&$H$O2?$G$9$+(B?
3.19 $B$*GO$J%&%#%s%I%&>I8u72(B(silly window syndrome)$B$H$O2?$G$9$+(B?
3.20 $BCY1d(B ACK $B%"%k%4%j%:%`$H$O2?$G$9$+(B?
3.21 $B;d$N%5!<%P$r$I$N%W%i%C%H%U%)!<%`>e$G1?MQ$5$;$k$Y$-$G$7$g$&$+(B?

$BBh(B4$B>O(B - Winsock $B>e5i

4.1 raw $B%=%1%C%H$r;H$&$K$O$I$&$9$l$P$h$$$N$G$9$+(B?
4.2 Winsock $B$r;H$C$F(B LAN $B>e$N%Q%1%C%H$r%-%c%W%A%c$9$k$K$O$I$&$9$l$P$h$$$N$G$9$+(B?
4.3 $B%Q%1%C%HCf$N(B IP $B%X%C%@$"$k$$$O(B TCP $B%X%C%@$r=q$-49$($k$K$O$I$&$9$k$N(B?
4.4 Winsock $B$GB>$N%^%7%s$K(B "ping" $B$9$k$K$O$I$&$9$l$P$h$$$N$G$9$+(B?
4.5 $B%=%1%C%H$r!"%"%W%j%1!<%7%g%s$G$O$J$/(B DLL $B$K;}$?$;$k$h$&$K:n$k$3$H$O2DG=$G$9$+(B?
4.6 $B%k!<%F%#%s%0%F!<%V%k!"(BARP $B%F!<%V%k!"%$%s%?%U%'!<%9%F!<%V%k$J$I$K%"%/%;%9$9$k$K$O$I$&$9$k$N$G$9$+(B?
4.7 Ethernet $B%"%@%W%?$N(B MAC$B%"%I%l%9(B($B%O!<%I%&%'%"%"%I%l%9(B)$B$r
4.8 Winsock $B$G$OF1;~$K$$$/$D$N%=%1%C%H$r%*!<%W%s$9$k$3$H$,$G$-$k$N$G$9$+(B?
4.9 $B!V(B64 $B%=%1%C%H!W@)8B$H$O2?$G$9$+(B?
4.10 Winsock $B$K;XDj$7$?%M%C%H%o!<%/%$%s%?%U%'!<%9$r;H$o$;$k$K$O$I$&$9$l$P$h$$$G$9$+(B?
4.11 FIN_WAIT_x, TIME_WAIT, CLOSE_WAIT $B$J$I$N%9%F!<%?%9$O2?$r0UL#$7$F$$$k$N$G$9$+(B?
4.12 SYN$B!"(BACK$B!"(BFIN$B!"(BRST $B%S%C%H$H$O2?$G$9$+(B?
4.13 $B%/%i%$%"%s%H%W%m%0%i%`$GFCDj%]!<%H$K(B bind() $B$9$k$N$ONI$/$J$$$3$H$J$N$G$9$+(B?
4.14 TCP $B%&%#%s%I%&%5%$%:$H$O2?$G$9$+(B?
4.15 $B%3%M%/%7%g%s%P%C%/%m%0$H$O2?$G$9$+(B?

Section 5 - Resources

5.1 Winsock Libraries and Controls
5.2 Samples: Tutorial Code
5.3 Samples: Useful Code
5.4 Debugging Tools (packet sniffers and shims)
5.5 Useful Web Pages
5.6 Other FAQs
5.7 MS Knowledge Base Articles
5.8 Winsock SDKs and Specifications
5.9 Miscellaneous

$BBh(B6$B>O(B - $B%5%s%W%k%W%m%0%i%`(B

6.1 Winsock $B$N4pK\%W%m%0%i%`Nc(B
Basic blocking client
Asynchronous client
CAsyncSocket-based client
Basic blocking server
Basic multi-threaded server
Basic select()-based server
6.2 ICMP.DLL $BHG(B ping
6.3 Raw $B%=%1%C%HHG(B ping
6.4 How to Pass a Socket Handle in Win32
6.5 $B<+J,$N(B IP $B%"%I%l%9
6.6 $B%$%s%?!<%U%'!<%9$N%j%9%H$r
6.7 How to Get the MAC (a.k.a. "hardware") Address, NetBIOS method
6.8 How to Get the MAC (a.k.a. "hardware") Address, RPC method
6.9 How to Get the MAC (a.k.a. "hardware") Address, SNMP method
6.10 How to Get the Local User Name
6.11 How to Packetize a TCP Stream
6.12 How to Check for a RAS Connection

Section 7 - $BO@@b5-;v(B

$B$;$C$+$A$J?M$N$?$a$N(BWinsock Warren Young $BCx(B
$B$I$N(B I/O $B@oN,$r;H$&$Y$-$+(B? Warren Young $BCx(B
TCP $B$rM-8z$K;H$&$?$a$K(B Warren Young $BCx(B
$B%6!&4V0c$$%j%9%H(B Winsock $B%Y%s%@%3%_%e%K%F%#Cx(B
TCP/IP $B$N%G%P%C%0(B Warren Young $BCx(B
Winsock $B$H(B BSD $B%=%1%C%H$H$N8_49@-(B Warren Young $BCx(B
WsControl() $BFbIt2r@O(B Tom Sanfilippo $BCx(B
CSocket $B$O$J$ Warren Young $BCx(B
$B%W%m%;%94V$G$N%=%1%C%H$N Warren Young$B!"(BFrank Schmied $BCx(B
$B%U%!%$%d%&%)!<%k$H$NIU$-9g$$J}(B Warren Young $BCx(B
Winsock for Non-Windows Systems by Warren Young

Section 8 - Book and Software Reviews

Section 9 - Glossary