我正在尝试创建服务器,客户端put和get方法,但我真的不知道从哪里开始,如何让服务器运行我处理的命令。任何帮助将不胜感激。
客户档案
void Copy(char *filename1,char *filename2);
int main(int argc, char **argv)
{
if(argc == 3)
{
int Sockfd;
sockaddr_in ServAddr;
hostent *HostPtr;
int Port = atoi(argv[2]);
int BuffSize = 0;
// get the address of the host
HostPtr = Gethostbyname(argv[1]);
if(HostPtr->h_addrtype != AF_INET)
{
perror("Unknown address type!");
exit(1);
}
memset((char *) &ServAddr, 0, sizeof(ServAddr));
ServAddr.sin_family = AF_INET;
ServAddr.sin_addr.s_addr = ((in_addr*)HostPtr->h_addr_list[0])->s_addr;
ServAddr.sin_port = htons(Port);
// open a TCP socket
Sockfd = Socket(AF_INET, SOCK_STREAM, 0);
// connect to the server
Connect(Sockfd, (sockaddr*)&ServAddr, sizeof(ServAddr));
char userI[256];
// write a message to the server
int dupSockfd = dup(Sockfd);
FILE* writeFile = fdopen(Sockfd, "w");
FILE* readFile = fdopen(dupSockfd, "r");
setlinebuf(writeFile);
char writerBuff[256];
for(;;)
{
cout << "ftp> ";
if(fgets(userI, sizeof(userI), stdin))
{
if(userI == "exit")
{
return 1;
}
else
{
string cmd, f1, f2;
istringstream iss(userI, istringstream::in);
iss >> cmd >> f1 >> f2;
cout << cmd << "." << f1 << "." << f2 << endl;
if(cmd == "get")
{
write(Sockfd, "get", sizeof("get"));
Copy(f1, f2);
}
}
}
}
close(Sockfd);
}
else
{
cout << "Incorrect commands for running... try './client (hostname) (port)'" << endl;
return 1;//
}
return 0;//
}
void Copy(char *filename1,char *filename2) {
const int BUFSIZE=2048;
char buffer[BUFSIZE];
ifstream fin;
ofstream fout;
long filelen, bytesRemaining, bytes;
// Open the file to be transferred, check it exists.
fin.open( filename1);
if (!fin.good())
{
cerr << "Problems opening \"" << filename1 << "\" (" << errno << "): " << strerror(errno) << endl;
exit(1);
}
fout.open(filename2);
if (!fout.good())
{
cerr << "Problems opening \"" << filename2 << "\" (" << errno << "): " << strerror(errno) << endl;
exit(1);
}
// Determine the file's length.
fin.seekg(0,ios::end);
if(fin.fail()) cerr<<"seekg() fail!\n";
filelen = fin.tellg();
if(fin.fail()) cerr<<"tellg() fail!\n";
fin.seekg(0, ios::beg);
if(fin.fail()) cerr<<"seekg() fail!\n";
// Copy the file data.
bytesRemaining = filelen;
while (bytesRemaining > 0)
{
bytes = bytesRemaining > BUFSIZE ? BUFSIZE : bytesRemaining;
fin.read(buffer,bytes);
if(fin.fail()){
cerr<<"read() error\n";
exit(1);
}
fout.write(buffer,bytes);
if(fout.fail()){
cerr<<"write() error\n";
exit(1);
}
bytesRemaining -= bytes;
}
fin.close();
fout.close();
}
服务器文件
int main(int argc, char **argv)
{
if(argc == 2)
{
int Sockfd, NewSockfd, ClntLen;
sockaddr_in ClntAddr, ServAddr;
int Port = atoi(argv[1]);
char String[MAX_SIZE];
int Len;
// open a TCP socket (an Internet stream socket)
Sockfd = Socket(AF_INET, SOCK_STREAM, 0); // socket() wrapper fn
// bind the local address, so that the client can send to server
memset((char*)&ServAddr, 0, sizeof(ServAddr));
ServAddr.sin_family = AF_INET;
ServAddr.sin_addr.s_addr = htonl(INADDR_ANY);
ServAddr.sin_port = htons(Port);
int opt = 1;
setsockopt(Sockfd,SOL_SOCKET,SO_REUSEADDR, (void*)opt, sizeof(opt));
Bind(Sockfd, (sockaddr*) &ServAddr, sizeof(ServAddr));
// listen to the socket
Listen(Sockfd, 5);
int RecvMsgSize;
for(;;)
{
// wait for a connection from a client; this is an iterative server
ClntLen = sizeof(ClntAddr);
NewSockfd = Accept(Sockfd, (sockaddr*)&ClntAddr, &ClntLen);
if((RecvMsgSize = recv(ClntSocket, EchoBuffer, RCVBUFSIZE, 0)) < 0)
{
perror("recv() failed");
exit(1);
}
// read a message from the client
Len = read(NewSockfd, String, MAX_SIZE);
String[Len] = 0;// make sure it's a proper string
cout<< String << endl;
close(NewSockfd);
}
}
else
{
cout << "Incorrect commands for running... try './server (port)'" << endl;
return 1;//
}
return 0;//
}
答案 0 :(得分:1)
我诚实地使用C ++ REST API库来完成工作。你可以找到一个名为&#34; Casablanca。&#34;
以下是有关如何将其用于制作客户的示例:https://casablanca.codeplex.com/wikipage?title=Http%20Client%20Tutorial
以下是有关如何创建服务器的示例:https://casablanca.codeplex.com/wikipage?title=HTTP%20Listener&referringTitle=Documentation
也许这会让你开始。
答案 1 :(得分:1)
您想创建一个处理GET和PUT请求的Web服务器吗?您首先需要阅读http的工作原理。让我用简单的语言解释一下。
首先尝试开发服务器并将其连接到浏览器:
1.让您的服务器在端口80上侦听 - 这是必须的
2.创建一个缓冲区,它将从浏览器(客户端)读取请求,就像在代码的这一部分中一样:
if((RecvMsgSize = recv(ClntSocket, EchoBuffer, RCVBUFSIZE, 0)) < 0)
{
perror("recv() failed");
exit(1);
}
// read a message from the client
Len = read(NewSockfd, String, MAX_SIZE);
String[Len] = 0;// make sure it's a proper string
cout<< String << endl;
close(NewSockfd);
所以这个String对象是你的缓冲区,它将包含http请求。
3.您需要解析请求。解析请求以查看该方法是否为GET PUT POST等。
这是一个示例GET请求:
https://marketing.adobe.com/developer/documentation/data-insertion/r-sample-http-get
4.然后,在这种情况下,您需要将正确的响应发送回客户端:
5.在地址栏中输入您的IP地址
,将浏览器连接到服务器