好的，过去十个小时我一直在搜索网络（字面意思），但似乎没有人有一个教程解释如何在Windows中创建C ++代理服务器。有几次我遇到了仅适用于UNIX的功能，这是一次令人沮丧的经历。我是套接字编程的新手，但我需要在48小时内完成。现在似乎不可能。
该计划的要求：
我已经运行了一个提供的winsock客户端和程序，以便更好地了解套接字是如何工作的，但它让我无处可去。 pid_t不适用于Windows，因此分叉是不可能的（或者我从10小时的净淘洗中收集到了）。
如果您能够指出我能够将Internet Explorer的代理设置（IP和端口号功能）与程序结合使用以产生重定向到另一台服务器的网页，那么这将是一个很好的选择。
/* client.c - code for example client program that uses TCP */
#ifndef unix
#include<winsock2.h>
#include <windows.h>
#include <winsock.h>
#pragma comment(lib, "ws2_32.lib")
#else
#define closesocket close
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/param.h>
#endif
#include <stdio.h>
#include <string.h>
#include <iostream>
#define PROTOPORT 5193 /* default protocol port number */
extern "C";
char localhost[] = "localhost"; /* default host name */
#define QLEN 6 /* size of request queue */
int visits = 0; /* counts client connections */
/*------------------------------------------------------------------------
* Program: client
*
* Purpose: allocate a socket, connect to a server, and print all output
*
* Syntax: client [ host [port] ]
*
* host - name of a computer on which server is executing
* port - protocol port number server is using
*
* Note: Both arguments are optional. If no host name is specified,
* the client uses "localhost"; if no protocol port is
* specified, the client uses the default given by PROTOPORT.
*
*------------------------------------------------------------------------
*/
int main(int argc, char *argv[])
{
struct hostent *ptrh; /* pointer to a host table entry */
struct protoent *ptrp; /* pointer to a protocol table entry */
struct sockaddr_in sad; /* structure to hold an IP address */
int port; /* protocol port number */
char *host; /* pointer to host name */
int n; /* number of characters read */
char buf[1000]; /* buffer for data from the server */
struct sockaddr_in cad; /* structure to hold client's address */
int sd, sd2; /* socket descriptors */
int alen; /* length of address */
#ifdef WIN32
WSADATA wsaData;
WSAStartup(0x0101, &wsaData);
#endif
memset((char *)&sad,0,sizeof(sad)); /* clear sockaddr structure */
sad.sin_family = AF_INET; /* set family to Internet */
sad.sin_addr.s_addr = INADDR_ANY; /* set the local IP address */
/* Check command-line argument for protocol port and extract */
/* port number if one is specified. Otherwise, use the default */
/* port value given by constant PROTOPORT */
if (argc > 2) { /* if protocol port specified */
port = atoi(argv[2]); /* convert to binary */
} else {
port = PROTOPORT; /* use default port number */
}
if (port > 0) /* test for legal value */
sad.sin_port = htons((u_short)port);
else { /* print error message and exit */
fprintf(stderr,"bad port number %s\n",argv[2]);
exit(1);
if (argc > 1) { /* if argument specified */
port = atoi(argv[1]); /* convert argument to binary */
} else {
port = PROTOPORT; /* use default port number */
}
if (port > 0) /* test for illegal value */
sad.sin_port = htons((u_short)port);
else { /* print error message and exit */
fprintf(stderr,"bad port number %s\n",argv[1]);
exit(1);
}
/* Map TCP transport protocol name to protocol number */
(int)(ptrp = getprotobyname("tcp"));
if ( ((int)(ptrp = getprotobyname("tcp"))) == 0) {
fprintf(stderr, "cannot map \"tcp\" to protocol number");
exit(1);
}
/* Check host argument and assign host name. */
if (argc > 1) {
host = argv[1]; /* if host argument specified */
} else {
host = localhost;
}
/* Convert host name to equivalent IP address and copy to sad. */
ptrh = gethostbyname(host);
if ( ((char *)ptrh) == NULL ) {
fprintf(stderr,"invalid host: %s\n", host);
exit(1);
}
memcpy(&sad.sin_addr, ptrh->h_addr, ptrh->h_length);
/* Map TCP transport protocol name to protocol number. */
(int)(ptrp = getprotobyname("tcp"));
if ( ((int)(ptrp = getprotobyname("tcp"))) == 0) {
fprintf(stderr, "cannot map \"tcp\" to protocol number");
exit(1);
}
/* Create a socket. */
sd = socket(PF_INET, SOCK_STREAM, ptrp->p_proto);
if (sd < 0) {
fprintf(stderr, "socket creation failed\n");
exit(1);
}
/* Connect the socket to the specified server. */
connect(sd, (struct sockaddr *)&sad, sizeof(sad));
if (connect(sd, (struct sockaddr *)&sad, sizeof(sad)) < 0) {
fprintf(stderr,"connect failed\n");
exit(1);
}
/* Bind a local address to the socket */
bind(sd, (struct sockaddr *)&sad, sizeof(sad));
if (bind(sd, (struct sockaddr *)&sad, sizeof(sad)) < 0) {
fprintf(stderr,"bind failed\n");
exit(1);
}
/* Specify size of request queue */
listen(sd, QLEN);
if (listen(sd, QLEN) < 0) {
fprintf(stderr,"listen failed\n");
exit(1);
}
/* Repeatedly read data from socket and write to user's screen. */
n = recv(sd, buf, sizeof(buf), 0);
while (n > 0) {
int _write(int fd, const void *buffer, unsigned int count);
n = recv(sd, buf, sizeof(buf), 0);
}
/* Main server loop - accept and handle requests */
while (1) {
alen = sizeof(cad);
printf("\nI'm waiting for connections ...");
fflush(stdout);
if ( (sd2=accept(sd, (struct sockaddr *)&cad, &alen)) < 0) {
fprintf(stderr, "accept failed\n");
exit(1);
}
printf("\nI received one connection.\n");
fflush(stdout);
visits++;
sprintf_s(buf,"This server has been contacted %d time%s\n",
visits,visits==1?".":"s.");
send(sd2,buf,strlen(buf),0);
printf("\nI sent the client a string.\n");
fflush(stdout);
closesocket(sd2);
}
/* Close the socket. */
closesocket(sd);
/* Terminate the client program gracefully. */
exit(0);
}
}
如果你已经做到这一点，我感谢你的警惕。祝我好运......