socket猟周勧補孔嬬議糞孖

<貧匯准和匯准>

宸准厘断栖頼撹 socket 猟周勧補殻會?宸頁匯倖掲械糞喘議箭徨。勣糞孖議孔嬬葎?client 貫 server 和墮匯倖猟周旺隠贋欺云仇。

園亟宸倖殻會俶勣廣吭曾倖諒籾?
1) 猟周寄弌音鳩協?嗤辛嬬曳産喝曝寄載謹?距喘匯肝 write()/send() 痕方音嬬頼撹猟周坪否議窟僕。俊辺方象扮匆氏囑欺揖劔議秤趨。

勣盾畳宸倖諒籾?辛參聞喘 while 儉桟?箭泌?

//Server 旗鷹
int nCount;
while( (nCount = fread(buffer, 1, BUF_SIZE, fp)) > 0 ){
 send(sock, buffer, nCount, 0);
}
//Client 旗鷹
int nCount;
while( (nCount = recv(clntSock, buffer, BUF_SIZE, 0)) > 0 ){
 fwrite(buffer, nCount, 1, fp);
}

斤噐 Server 極議旗鷹?輝響函欺猟周挑硫?fread() 氏卦指 0?潤崩儉桟。

斤噐 Client 極旗鷹?嗤匯倖購囚議諒籾?祥頁猟周勧補頼穎朔斑 recv() 卦指 0?潤崩 while 儉桟。

廣吭?響函頼産喝曝嶄議方象 recv() 旺音氏卦指 0?遇頁瓜怦毘?岷欺産喝曝嶄壅肝嗤方象。

2) Client 極泌採登僅猟周俊辺頼穎?匆祥頁貧中戻欺議諒籾——採扮潤崩 while 儉桟。

恷酒汽議潤崩 while 儉桟議圭隈輝隼頁猟周俊辺頼穎朔斑 recv() 痕方卦指 0?椎担?泌採斑 recv() 卦指 0 椿?recv() 卦指 0 議率匯扮字祥頁辺欺FIN淫扮。

FIN 淫燕幣方象勧補頼穎?柴麻字辺欺 FIN 淫朔祥岑祇斤圭音氏壅?徭失勧補方象?輝距喘 read()/recv() 痕方扮?泌惚産喝曝嶄短嗤方象?祥氏卦指 0?燕幣響欺阻”socket猟周議挑硫“。

宸戦厘断距喘 shutdown() 栖窟僕FIN淫?server 極岷俊距喘 close()/closesocket() 氏聞補竃産喝曝嶄議方象払丼?猟周坪否載嗤辛嬬短嗤勧補頼穎銭俊祥僅蝕阻?遇距喘 shutdown() 氏吉棋補竃産喝曝嶄議方象勧補頼穎。

云准參Windows葎箭處幣猟周勧補孔嬬?Linux嚥緩窃貌?音壅弩峰。萩心和中頼屁議旗鷹。

捲暦匂極 server.cpp?

#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#pragma comment (lib, "ws2_32.lib") //紗墮 ws2_32.dll
#define BUF_SIZE 1024
int main(){
 //枠殊臥猟周頁倦贋壓
 char *filename = "D:\\send.avi"; //猟周兆
 FILE *fp = fopen(filename, "rb"); //參屈序崙圭塀嬉蝕猟周
 if(fp == NULL){
 printf("Cannot open file, press any key to exit!\n");
 system("pause");
 exit(0);
 }
 WSADATA wsaData;
 WSAStartup( MAKEWORD(2, 2), &wsaData);
 SOCKET servSock = socket(AF_INET, SOCK_STREAM, 0);
 sockaddr_in sockAddr;
 memset(&sockAddr, 0, sizeof(sockAddr));
 sockAddr.sin_family = PF_INET;
 sockAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
 sockAddr.sin_port = htons(1234);
 bind(servSock, (SOCKADDR*)&sockAddr, sizeof(SOCKADDR));
 listen(servSock, 20);
 SOCKADDR clntAddr;
 int nSize = sizeof(SOCKADDR);
 SOCKET clntSock = accept(servSock, (SOCKADDR*)&clntAddr, &nSize);
 //儉桟窟僕方象?岷欺猟周潤硫
 char buffer[BUF_SIZE] = {0}; //産喝曝
 int nCount;
 while( (nCount = fread(buffer, 1, BUF_SIZE, fp)) > 0 ){
 send(clntSock, buffer, nCount, 0);
 }
 shutdown(clntSock, SD_SEND); //猟周響函頼穎?僅蝕補竃送??人薩極窟僕FIN淫
 recv(clntSock, buffer, BUF_SIZE, 0); //怦毘?吉棋人薩極俊辺頼穎
 fclose(fp);
 closesocket(clntSock);
 closesocket(servSock);
 WSACleanup();
 system("pause");
 return 0;
}

人薩極旗鷹?

#include <stdio.h>
#include <stdlib.h>
#include <WinSock2.h>
#pragma comment(lib, "ws2_32.lib")
#define BUF_SIZE 1024
int main(){
 //枠補秘猟周兆?心猟周頁倦嬬幹秀撹孔
 char filename[100] = {0}; //猟周兆
 printf("Input filename to save: ");
 gets(filename);
 FILE *fp = fopen(filename, "wb"); //參屈序崙圭塀嬉蝕?幹秀?猟周
 if(fp == NULL){
 printf("Cannot open file, press any key to exit!\n");
 system("pause");
 exit(0);
 }
 WSADATA wsaData;
 WSAStartup(MAKEWORD(2, 2), &wsaData);
 SOCKET sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 sockaddr_in sockAddr;
 memset(&sockAddr, 0, sizeof(sockAddr));
 sockAddr.sin_family = PF_INET;
 sockAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
 sockAddr.sin_port = htons(1234);
 connect(sock, (SOCKADDR*)&sockAddr, sizeof(SOCKADDR));
 //儉桟俊辺方象?岷欺猟周勧補頼穎
 char buffer[BUF_SIZE] = {0}; //猟周産喝曝
 int nCount;
 while( (nCount = recv(sock, buffer, BUF_SIZE, 0)) > 0 ){
 fwrite(buffer, nCount, 1, fp);
 }
 puts("File transfer success!");
 //猟周俊辺頼穎朔岷俊購液耗俊忖?涙俶距喘shutdown()
 fclose(fp);
 closesocket(sock);
 WSACleanup();
 system("pause");
 return 0;
}

壓D徒嶄彈姥挫send.avi猟周?枠塰佩 server?壅塰佩 client?
Input filename to save: D:\\recv.avi?L
//不吉頭震朔
File transfer success!

嬉蝕D徒祥辛參心欺 recv.avi?寄弌才 send.avi 屢揖?辛參屎械殴慧。

廣吭 server.cpp 及42佩旗鷹?recv() 旺短嗤俊辺欺 client 極議方象?輝 client 極距喘 closesocket() 朔?server 極氏辺欺FIN淫?recv() 祥氏卦指?朔中議旗鷹写偬峇佩。

<貧匯准和匯准>

socket猟周勧補孔嬬議糞孖

socket園殻