我想创建一个异步。服务器。 我成功了，但现在我想将async_read / asyn_write函数绑定到调用者对象函数。所以我试着用boost :: function做到这一点 在这里你有我的代码：
Server.cpp
#include "Server.h"
#include "Client.h"
#include "Network.h"
void Server::accept(void)
{
Network::ptr connection = Network::create(this->my_acceptor.get_io_service());
this->my_acceptor.async_accept(connection->getSocket(), bind(&Server::endCmd, this, connection, placeholders::error));
}
void Server::endCmd(Network::ptr connection, const boost::system::error_code& error)
{
if (!error)
{
std::cout << "Recu un client!" << std::endl;
this->client.push_back(new Client(connection));
this->client[client.size() - 1]->checkAuthentification();
std::cout << "Envoie du message de securisation" << std::endl;
std::cout << "Nouvelle ecoute" << std::endl;
this->accept();
}
}
Client.h和.cpp
#include "Network.h"
class Client
{
private:
Network::ptr connection;
public:
Client(Network::ptr);
~Client();
void checkAuthentification(void);
void endRead(const error_code& error, size_t nbytes);
void endWrite(const error_code &error);
};
#include "Client.h"
Client::Client(Network::ptr connect)
{
this->connection = connect;
this->connection->assignFunction(this);
}
Client::~Client()
{
this->connection->close();
}
void Client::checkAuthentification(void)
{
this->connection->Swrite("BIENVENUE", this);
}
void Client::endRead(const error_code& error, size_t nbytes)
{
if (!error && nbytes != 0)
{
std::cout << this->connection->getRcvMsg() << std::endl;
this->connection->Sread(this);
}
else
this->connection->close();
}
void Client::endWrite(const error_code &error)
{
if (!error)
this->connection->Sread(this);
else
this->connection->close();
}
和Network.cpp和.h
#include "Client.h"
class Network : public boost::enable_shared_from_this<Network>
{
private:
tcp::socket socket;
std::string rcv_msg;
std::string msg;
boost::array<char, 6> rbuffer;
boost::function<void (Client *, const error_code &, size_t)> fread;
boost::function<void (Client *, const error_code &)> fwrite;
public:
typedef boost::shared_ptr<Network> ptr;
Network(io_service &);
~Network();
void assignFunction(void);
void close(void);
void Sread(Client *cli);
void Swrite(std::string msg, Client *cli);
tcp::socket& getSocket(void);
std::string getRcvMsg(void);
static ptr create(io_service &);
};
#include "Client.h"
#include "Network.h"
Network::Network(io_service &ios) : socket(ios)
{
}
Network::~Network()
{
this->close();
}
void Network::assignFunction(void)
{
this->fread = &Client::endRead;
this->fwrite = &Client::endWrite;
}
void Network::close(void)
{
if (this->socket.is_open())
{
std::cout << "Connection closed" << std::endl;
this->socket.close();
}
}
void Network::Sread(Client *cli)
{
async_read(this->socket, buffer(this->rbuffer), bind(&Network::fread, cli, placeholders::error, placeholders::bytes_transferred));
}
void Network::Swrite(std::string msg, Client *cli)
{
this->msg = msg;
async_write(this->socket, buffer(this->msg, (int)this->msg.size()), bind(&Network::fwrite, cli, placeholders::error));
}
std::string Network::getRcvMsg(void)
{
return (std::string(this->rbuffer.c_array(), this->rbuffer.size()));
}
tcp::socket& Network::getSocket(void)
{
return (this->socket);
}
Network::ptr Network::create(io_service &ios)
{
return (ptr(new Network(ios)));
}
当我想编译时，我有以下错误：
Client.h(10): error C2653: 'Network' : is not a class or namespace name
Client.h(10): error C2146: syntax error : missing ';' before identifier 'connection'
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2460: 'Client::ptr' : uses 'Client', which is being defined
Client.h(8) : see declaration of 'Client'
1>Client.cpp(6): error C2511: 'Client::Client(Network::ptr)' : overloaded member function not found in 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(13): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(13): error C2227: left of '->close' must point to class/struct/union/generic type
1>Client.cpp(18): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(18): error C2227: left of '->Swrite' must point to class/struct/union/generic type
1>Client.cpp(25): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(25): error C2227: left of '->getRcvMsg' must point to class/struct/union/generic type
1>Client.cpp(26): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(26): error C2227: left of '->Sread' must point to class/struct/union/generic type
1>Client.cpp(29): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(29): error C2227: left of '->close' must point to class/struct/union/generic type
1>Client.cpp(35): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(35): error C2227: left of '->Sread' must point to class/struct/union/generic type
1>Client.cpp(37): error C2039: 'connection' : is not a member of 'Client'
Client.h(8) : see declaration of 'Client'
1>Client.cpp(37): error C2227: left of '->close' must point to class/struct/union/generic type
Commande.cpp
main.cpp
Client.h(10): error C2653: 'Network' : is not a class or namespace name
Client.h(10): error C2146: syntax error : missing ';' before identifier 'connection'
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2460: 'Client::ptr' : uses 'Client', which is being defined
Client.h(8) : see declaration of 'Client'
My_exception.cpp
Network.cpp
Network.h(14): error C2065: 'Client' : undeclared identifier
Network.h(14): error C2059: syntax error : ','
Network.h(15): error C2065: 'Client' : undeclared identifier
Network.h(15): error C2059: syntax error : ','
Network.h(25): error C2065: 'Client' : undeclared identifier
Network.h(25): error C2065: 'cli' : undeclared identifier
Network.h(25): error C2143: syntax error : missing ',' before ')'
Network.h(29): error C2143: syntax error : missing ';' before '}'
Client.h(8): error C2143: syntax error : missing ';' before '{'
Client.h(18): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(6): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(7): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(10): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(12): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(15): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(16): error C2653: 'Client' : is not a class or namespace name
1>Network.cpp(17): error C2653: 'Client' : is not a class or namespace name
1>Network.cpp(18): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(21): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(23): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(26): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(27): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(30): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(31): error C2355: 'this' : can only be referenced inside non-static member functions
1>Network.cpp(31): error C2227: left of '->rbuffer' must point to class/struct/union/generic type
1>Network.cpp(31): error C2065: 'cli' : undeclared identifier
1>Network.cpp(31): error C2143: syntax error : missing ',' before ')'
1>Network.cpp(32): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(35): error C2065: 'Client' : undeclared identifier
1>Network.cpp(35): error C2065: 'cli' : undeclared identifier
1>Network.cpp(35): error C2143: syntax error : missing ',' before ')'
1>Network.cpp(36): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(38): error C2355: 'this' : can only be referenced inside non-static member functions
1>Network.cpp(38): error C2227: left of '->msg' must point to class/struct/union/generic type
1>Network.cpp(38): error C2355: 'this' : can only be referenced inside non-static member functions
1>Network.cpp(38): error C2227: left of '->msg' must point to class/struct/union/generic type
1>Network.cpp(38): error C2228: left of '.size' must have class/struct/union
1>Network.cpp(38): error C2065: 'cli' : undeclared identifier
1>Network.cpp(38): error C2143: syntax error : missing ',' before ')'
1>Network.cpp(39): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(42): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(43): error C2355: 'this' : can only be referenced inside non-static member functions
1>Network.cpp(43): error C2227: left of '->rbuffer' must point to class/struct/union/generic type
1>Network.cpp(43): error C2228: left of '.size' must have class/struct/union
1>Network.cpp(43): error C2143: syntax error : missing ',' before ')'
1>Network.cpp(44): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(47): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(49): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(52): error C2143: syntax error : missing ';' before '{'
1>Network.cpp(54): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(55): error C2143: syntax error : missing ';' before '}'
1>Network.cpp(55): fatal error C1004: unexpected end-of-file found
Server.cpp
Client.h(10): error C2653: 'Network' : is not a class or namespace name
Client.h(10): error C2146: syntax error : missing ';' before identifier 'connection'
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2653: 'Network' : is not a class or namespace name
Client.h(13): error C2460: 'Client::ptr' : uses 'Client', which is being defined
Client.h(8) : see declaration of 'Client'
1>Server.cpp(22): error C2664: 'Client::Client(const Client &)' : cannot convert parameter 1 from 'Network::ptr' to 'const Client &'
Reason: cannot convert from 'Network::ptr' to 'const Client'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
经过这么多小时的“谷歌搜索”和反思，我没有找到为什么我有这些错误。 任何人都可以帮助我PLZ？
答案 0 :(得分：2)
嗯..也许你已经把它们排除了，但你没有包括标题：
编辑这似乎很明显。如果不是那么那么 编辑2 请注意，在未提供有关包含结构的完整信息时，已键入这些建议。这些问题现在已经解决，但是这些提示都是很好的一般故障排除建议，只要编译器没有“看到”你的声明就会出现奇怪的问题：
检查标题是否包含警卫（如果它们不正确，例如
#ifndef __NETWORK_H
#define __NETWORK_H
...
#endif // __NETWORK_H
在您的Client.h ...
检查命名空间问题
namespace { ... }块检查预处理器问题（#define是否会造成严重破坏？）
Server.cpp
include "Network.h"
include "Server.h"
//....
Client.cpp
include "Network.h"
include "Server.h"
Network.cpp
include "Network.h"
可能（从形式上看错误）：
Client.h
include "Network.h"
太
答案 1 :(得分：1)
在Network.h中，不要包含Client.h，而应包括forward declare class Client。