\n| 3<\/td>\n | \u975e\u6cd5\u64cd\u4f5c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u6838\u5fc3\u96be\u70b9：\u89e3\u51b3 TCP \u7c98\u5305\u95ee\u9898<\/h2>\n\u2753 \u4ec0\u4e48\u662f\u7c98\u5305？<\/h3>\nTCP \u662f\u9762\u5411\u5b57\u8282\u6d41\u7684\u534f\u8bae：<\/p>\n 👉 \u53d1\u9001：<\/p>\n \u8bf7\u6c421 + \u8bf7\u6c422 + \u8bf7\u6c423<\/p>\n 👉 \u63a5\u6536：<\/p>\n \u53ef\u80fd\u53d8\u6210：
\n\u8bf7\u6c421\u8bf7\u6c422 | \u8bf7\u6c423<\/p>\n \u89e3\u7801\u51fd\u6570 Decode（\u91cd\u70b9）<\/h3>\nbool Decode(std::string &s, std::string *content)
\n{
\n size_t pos = s.find("\\\\n");
\n if (pos == std::string::npos)
\n return false;<\/p>\n int len = std::stoi(s.substr(0, pos));<\/p>\n if (s.size() < pos + 1 + len + 1)
\n return false;<\/p>\n *content = s.substr(pos + 1, len);
\n s.erase(0, pos + 1 + len + 1);<\/p>\n return true;
\n}<\/p>\n \u670d\u52a1\u5668\u7684\u5904\u7406\u65b9\u6cd5Calculator（\u91cd\u70b9）<\/h3>\n std::string Calculator(std::string& s)
\n {
\n std::string content;
\n if (Decode(s, &content) == false)
\n {
\n return "";
\n }
\n request req;
\n bool r = req.Deserialization(content);<\/p>\n if (!r)
\n {
\n return "";
\n }
\n response res = CalculatorHandler(req);<\/p>\n std::string ret = res.serialization();
\n ret = Encode(ret);
\n return ret;
\n }<\/p>\n \u670d\u52a1\u5668\u6838\u5fc3\u4ee3\u7801：（\u91cd\u70b9）<\/h3>\nwhile (true)
\n{
\n int sockfd = listenfd_.Accept(&client_port, &client_ip);<\/p>\n if (fork() == 0)
\n {
\n while (1)
\n {
\n char buffer[1280];<\/p>\n ssize_t s = read(sockfd, buffer, sizeof buffer – 1);<\/p>\n if (s > 0)
\n {
\n inbuffer_stream += buffer;<\/p>\n while (true)
\n {
\n std::string info = callback_(inbuffer_stream);<\/p>\n if (info.empty())
\n break;<\/p>\n write(sockfd, info.c_str(), info.size());
\n }
\n }
\n }
\n }
\n}<\/p>\n \u53ef\u4ee5\u770b\u5230\u6211\u4eec\u7684\u670d\u52a1\u5668\u5728\u6536\u5230\u4e00\u4e2a\u62a5\u6587\u4e4b\u540e，\u9996\u5148\u4f1a\u8c03\u7528\u670d\u52a1\u5668\u7684\u5904\u7406\u65b9\u6cd5Calculator，\u5728\u5904\u7406\u65b9\u6cd5\u4e2d\u4f1a\u8fdb\u884c\u89e3\u7801，\u5982\u679c\u6536\u5230\u7684\u62a5\u6587\u4e0d\u80fd\u591f\u5206\u89e3\u4e3a\u7c7b\u4f3c（6\\\\n10 + 5\\\\n）\u8fd9\u6837\u7684\u683c\u5f0f，\u6211\u4eec\u5c31\u4f1a\u8fd4\u56de\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32，\u800c\u4e00\u65e6\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32，\u6211\u4eec\u7684\u670d\u52a1\u5668\u5c31\u77e5\u9053\u8fd9\u4e2a\u62a5\u6587\u4e0d\u5b8c\u6574，\u5c31\u4f1a\u7ee7\u7eed\u63a5\u6536\u65b0\u7684\u62a5\u6587，\u76f4\u5230\u63a5\u6536\u5230\u4e00\u4e2a\u5b8c\u6574\u7684\u62a5\u6587\u4e14\u53ef\u4ee5\u901a\u8fc7Decode\u89e3\u7801\u6210\u529f\u4e4b\u540e，\u6211\u4eec\u7684\u7a0b\u5e8f\u624d\u4f1a\u7ee7\u7eed\u8fdb\u884c，\u8fd9\u6837\u5c31\u4fdd\u8bc1\u4e86\u6211\u4eec\u6bcf\u6b21\u670d\u52a1\u5668\u5904\u7406\u7684\u80af\u5b9a\u662f\u4e00\u4e2a\u6b63\u786e\u683c\u5f0f\u7684\u62a5\u6587\u3002<\/p>\n \u5b8c\u6574\u4ee3\u7801<\/h2>\n\u81ea\u5b9a\u4e49\u534f\u8bae<\/h3>\n#include <string><\/p>\n #define blank_sep " "
\n#define protocol_sep "\\\\n"<\/p>\n class request
\n{
\npublic:
\n request(int x, int y, char op)
\n : x_(x), y_(y), op_(op)
\n {
\n }<\/p>\n request()
\n {
\n }<\/p>\n ~request()
\n {
\n }<\/p>\n std::string serialization()
\n {
\n std::string str;
\n str += std::to_string(x_);
\n str += blank_sep;
\n str += op_;
\n str += blank_sep;
\n str += std::to_string(y_);
\n return str;
\n }<\/p>\n bool Deserialization(std::string &in)
\n {
\n size_t leftpos = in.find(blank_sep);
\n if (leftpos == std::string::npos)
\n {
\n return false;
\n }
\n std::string str_x = in.substr(0, leftpos);
\n x_ = std::stoi(str_x);<\/p>\n op_ = in[leftpos + 1];<\/p>\n size_t rightpos = in.rfind(blank_sep);
\n if (rightpos == std::string::npos)
\n {
\n return false;
\n }
\n std::string str_y = in.substr(rightpos + 1);
\n y_ = std::stoi(str_y);
\n return true;
\n }
\n void DebugPrint()
\n {
\n std::cout << "\u65b0\u8bf7\u6c42\u6784\u5efa\u5b8c\u6210: " << x_ << op_ << y_ << "=?" << std::endl;
\n }<\/p>\n public:
\n int x_;
\n int y_;
\n char op_;
\n};<\/p>\n class response
\n{
\npublic:
\n response()
\n {
\n }
\n response(int result, int code)
\n : result_(result), code_(code)
\n {
\n }<\/p>\n ~response()
\n {
\n }<\/p>\n std::string serialization()
\n {
\n std::string str;
\n str += std::to_string(result_);
\n str += blank_sep;
\n str += std::to_string(code_);
\n return str;
\n }<\/p>\n bool Deserialization(std::string &in)
\n {
\n size_t pos = in.find(blank_sep);<\/p>\n if (pos == std::string::npos)
\n {
\n return false;
\n }<\/p>\n std::string str_result = in.substr(0, pos);
\n result_ = std::stoi(str_result);<\/p>\n std::string str_code = in.substr(pos + 1);
\n code_ = std::stoi(str_code);
\n return true;
\n }
\n void DebugPrint()
\n {
\n std::cout << "\u7ed3\u679c\u54cd\u5e94\u5b8c\u6210, result: " << result_ << ", code: " << code_ << std::endl;
\n }<\/p>\n public:
\n int result_;
\n int code_;
\n};<\/p>\n std::string Encode(std::string &content)
\n{
\n std::string s;
\n size_t len = content.size();
\n s += std::to_string(len);
\n s += protocol_sep;
\n s += content;
\n s += protocol_sep;
\n return s;
\n}<\/p>\n bool Decode(std::string &s, std::string *content)
\n{
\n size_t left_pos = s.find(protocol_sep);
\n if (left_pos == std::string::npos)
\n {
\n return false;
\n }
\n std::string content_len = s.substr(0, left_pos);
\n int len = std::stoi(content_len);
\n if (s.size() < content_len.size() + len + 2)
\n {
\n return false;
\n }
\n *content = s.substr(left_pos + 1, len);
\n s.erase(0, content_len.size() + len + 2);
\n return true;
\n}<\/p>\n \u670d\u52a1\u7aef<\/h3>\n#include <iostream>
\n#include <unistd.h>
\n#include <sys\/stat.h>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <arpa\/inet.h>
\n#include <netinet\/in.h>
\n#include <string><\/p>\n enum error
\n{
\n SocketErr = 2,
\n BindErr,
\n ListenErr,
\n ConnectErr,
\n};<\/p>\n class Socket
\n{
\npublic:
\n Socket()
\n {
\n sockfd_ = socket(AF_INET, SOCK_STREAM, 0);
\n if (sockfd_ < 0)
\n {
\n std::cout << "socket fail" << std::endl;
\n exit(SocketErr);
\n }
\n }<\/p>\n void Bind(uint16_t &port, std::string &ip)
\n {
\n struct sockaddr_in server;
\n server.sin_family = AF_INET;
\n server.sin_port = htons(port);
\n inet_pton(AF_INET, ip.c_str(), &server.sin_addr);
\n if (bind(sockfd_, (struct sockaddr *)&server, sizeof(server)) < 0)
\n {
\n std::cout << "server bind fail!" << std::endl;
\n exit(BindErr);
\n }
\n std::cout << "server bind successful" << std::endl;
\n }<\/p>\n void Listen()
\n {
\n if (listen(sockfd_, 10) < 0)
\n {
\n std::cout << "server listen fail!" << std::endl;
\n exit(ListenErr);
\n }
\n std::cout << "server listen successful" << std::endl;
\n }<\/p>\n int Accept(uint16_t *client_port, std::string *client_ip)
\n {
\n struct sockaddr_in client;
\n socklen_t len = sizeof(client);
\n int sockfd = accept(sockfd_, (struct sockaddr *)&client, &len);
\n if (sockfd < 0)
\n {
\n std::cout << "accept fail!" << std::endl;
\n return -1;
\n }
\n std::cout << "accept successful" << std::endl;
\n *client_port = ntohs(client.sin_port);
\n char ip[64];
\n inet_ntop(AF_INET, &client.sin_addr, ip, sizeof ip);
\n *client_ip = ip;
\n return sockfd;
\n }<\/p>\n void Connect(uint16_t &server_port, std::string &server_ip)
\n {
\n struct sockaddr_in server;
\n server.sin_family = AF_INET;
\n server.sin_port = htons(server_port);
\n inet_pton(AF_INET, server_ip.c_str(), &server.sin_addr);
\n if (connect(sockfd_, (struct sockaddr *)&server, sizeof server) < 0)
\n {
\n std::cout << "connect fail!" << std::endl;
\n exit(ConnectErr);
\n }
\n std::cout << "connect successful!" << std::endl;
\n }
\n void Close()
\n {
\n close(sockfd_);
\n }<\/p>\n int fd()
\n {
\n return sockfd_;
\n }<\/p>\n ~Socket()
\n {
\n close(sockfd_);
\n }<\/p>\n private:
\n int sockfd_;
\n};
\nclass CalculatorServer
\n{
\npublic:
\n CalculatorServer()
\n {
\n }<\/p>\n response CalculatorHandler(const request &req)
\n {
\n response res(0, 0);
\n switch (req.op_)
\n {
\n case '+':
\n res.result_ = req.x_ + req.y_;
\n break;
\n case '-':
\n res.result_ = req.x_ – req.y_;
\n break;
\n case '*':
\n res.result_ = req.x_ * req.y_;
\n break;
\n case '\/':
\n if (req.y_ == 0)
\n {
\n res.code_ = 1;
\n break;
\n }
\n res.result_ = req.x_ \/ req.y_;
\n break;
\n case '%':
\n if (req.y_ == 0)
\n {
\n res.code_ = 2;
\n break;
\n }
\n res.result_ = req.x_ % req.y_;
\n break;
\n default:
\n res.code_ = 3;
\n break;
\n }
\n return res;
\n }<\/p>\n std::string Calculator(std::string& s)
\n {
\n std::string content;
\n if (Decode(s, &content) == false)
\n {
\n return "";
\n }
\n request req;
\n bool r = req.Deserialization(content);<\/p>\n if (!r)
\n {
\n return "";
\n }
\n response res = CalculatorHandler(req);<\/p>\n std::string ret = res.serialization();
\n ret = Encode(ret);
\n return ret;
\n }<\/p>\n ~CalculatorServer()
\n {
\n }
\n};
\nusing func_t = std::function<std::string(std::string &)>;
\nclass TcpServer
\n{
\npublic:
\n TcpServer(uint16_t port, std::string ip, func_t callback)
\n : port_(port), ip_(ip), callback_(callback)
\n {
\n }<\/p>\n void InitServer()
\n {
\n listenfd_.Bind(port_, ip_);
\n listenfd_.Listen();
\n std::cout << "init server successful!" << std::endl;
\n }<\/p>\n void start()
\n {
\n signal(SIGCHLD, SIG_IGN);
\n signal(SIGPIPE, SIG_IGN);
\n while (true)
\n {
\n uint16_t client_port;
\n std::string client_ip;
\n int sockfd = listenfd_.Accept(&client_port, &client_ip);<\/p>\n if (sockfd < 0)
\n {
\n continue;
\n }<\/p>\n if (fork() == 0)
\n {
\n \/\/ \u5b50\u8fdb\u7a0b
\n listenfd_.Close();
\n std::string inbuffer_stream;<\/p>\n while (1)
\n {
\n char buffer[1280];
\n ssize_t s = read(sockfd, buffer, sizeof buffer – 1);
\n if (s > 0)
\n {
\n buffer[s] = 0;
\n \/\/ std::cout << buffer << std::endl;
\n inbuffer_stream += buffer;
\n while (true)
\n {
\n std::string info = callback_(inbuffer_stream);
\n std::cout << info << std::endl;
\n if (info.empty())
\n {
\n break;
\n }<\/p>\n write(sockfd, info.c_str(), info.size());
\n }
\n }
\n else if (s == 0)
\n {
\n break;
\n }
\n else
\n {
\n break;
\n }
\n }
\n close(sockfd);
\n exit(0);
\n }
\n close(sockfd);
\n }
\n }<\/p>\n ~TcpServer()
\n {
\n }<\/p>\n private:
\n Socket listenfd_;
\n uint16_t port_;
\n std::string ip_;
\n func_t callback_;
\n};
\nint main(int argc,char* argv[])
\n{
\n if(argc != 3)
\n {
\n exit(0);
\n }<\/p>\n uint16_t server_port = std::atoi(argv[2]);
\n std::string server_ip = argv[1];
\n CalculatorServer cal;
\n TcpServer* ser = new TcpServer(server_port,server_ip,std::bind(&CalculatorServer::Calculator, &cal, std::placeholders::_1));
\n ser->InitServer();
\n ser->start();
\n return 0;
\n}<\/p>\n \u5ba2\u6237\u7aef<\/h3>\n#include <iostream>
\n#include <cassert>
\n#include <unistd.h>
\n#include "Protocol.hpp"
\n#include "Socket.hpp"<\/p>\n static void Usage(const std::string &proc)
\n{
\n std::cout << "\\\\nUsage: " << proc << " serverip serverport\\\\n"
\n << std::endl;
\n}<\/p>\n \/\/ .\/clientcal ip port
\nint main(int argc, char *argv[])
\n{
\n if (argc != 3)
\n {
\n Usage(argv[0]);
\n exit(0);
\n }
\n std::string serverip = argv[1];
\n uint16_t serverport = std::stoi(argv[2]);<\/p>\n Socket sockfd;
\n sockfd.Connect(serverport, serverip);<\/p>\n srand(time(nullptr) ^ getpid());
\n int cnt = 1;
\n const std::string opers = "+-*\/%=-=&^";<\/p>\n std::string inbuffer_stream;
\n while (cnt <= 10)
\n {
\n std::cout << "===============\u7b2c" << cnt << "\u6b21\u6d4b\u8bd5….., " << "===============" << std::endl;
\n int x = rand() % 100 + 1;
\n usleep(1234);
\n int y = rand() % 100;
\n usleep(4321);
\n char oper = opers[rand() % opers.size()];
\n request req(x, y, oper);
\n req.DebugPrint();<\/p>\n std::string package;
\n package = req.serialization();<\/p>\n package = Encode(package);
\n std::cout << package << std::endl;
\n write(sockfd.fd(), package.c_str(), package.size());<\/p>\n char buffer[128];
\n ssize_t n = read(sockfd.fd(), buffer, sizeof(buffer) – 1);
\n if (n > 0)
\n {
\n buffer[n] = 0;
\n inbuffer_stream += buffer; \/\/ "len"\\\\n"result code"\\\\n
\n std::cout << inbuffer_stream << std::endl;
\n std::string content;
\n bool r = Decode(inbuffer_stream, &content); \/\/ "result code"
\n assert(r);<\/p>\n response resp;
\n r = resp.Deserialization(content);
\n assert(r);<\/p>\n resp.DebugPrint();
\n }<\/p>\n std::cout << "=================================================" << std::endl;
\n sleep(1);<\/p>\n cnt++;
\n }<\/p>\n sockfd.Close();
\n return 0;
\n}<\/p>\n ![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260727122504-6a674e20ddb64.png\") <\/p>\n<\/p>\n
\u5230\u8fd9\u91cc，\u6211\u4eec\u5df2\u7ecf\u5b8c\u6574\u5b9e\u73b0\u4e86\u4e00\u4e2a\u57fa\u4e8e C++ \u7684 TCP \u8ba1\u7b97\u5668\u670d\u52a1\u5668，\u5230\u73b0\u5728，\u6211\u4eec\u5e94\u8be5\u5efa\u7acb\u8fd9\u6837\u4e00\u4e2a\u8ba4\u77e5：<\/p>\n TCP\u7f16\u7a0b\u7684\u672c\u8d28\u4e0d\u662f\u6536\u53d1\u6570\u636e，\u800c\u662f\u5982\u4f55\u6b63\u786e\u89e3\u6790\u6570\u636e\u7684\u8fb9\u754c<\/p>\n \u603b\u800c\u8a00\u4e4b，\u6838\u5fc3\u601d\u60f3\u5c31\u4e00\u53e5\u8bdd，\u5c31\u662fTCP\u6ca1\u6709\u6d88\u606f\u8fb9\u754c，\u6240\u4ee5\u6211\u4eec\u5fc5\u987b\u8bbe\u8ba1\u5e94\u7528\u5c42\u534f\u8bae\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u5728\u4e4b\u524d\u7684\u535a\u5ba2\u4e2d，\u6211\u4eec\u4e86\u89e3\u4e86\u5173\u4e8eUDP\u548cTCP\u7684\u7f51\u7edc\u7f16\u7a0b，\u76f4\u89c2\u7684\u611f\u53d7\u4e86\u4e00\u4e0b\u7f51\u7edc\u5957\u63a5\u5b57\u662f\u5982\u4f55\u4f7f\u7528\u7684，\u5e76\u4e14\u6210\u529f\u7684\u5b8c\u6210\u4e86\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u7684\u7f51\u7edc\u901a\u4fe1，\u4f46\u662f\u5176\u4e2d\u8fd8\u6709\u4e00\u4e2a\u5c0f\u7ec6\u8282\u6211\u4eec\u53ef\u80fd\u4f1a\u5ffd\u7565，\u5c31\u662fUDP\u662f\u57fa\u4e8e\u6570\u636e\u62a5\u8fdb\u884c\u4f20\u8f93\u7684，\u4e00\u4e0b\u5b50\u5c31\u5c06\u6240\u6709\u6211\u4eec\u8981\u53d1\u9001\u7684\u4fe1\u606f\u4f20\u9001\u7ed9\u5bf9\u65b9，\u4f46\u662f\u6211\u4eec\u7684TCP\u53ef\u662f\u57fa\u4e8e\u5b57\u8282\u6d41\u8fdb\u884c\u4f20\u8f93\u7684，\u6211\u4eec\u5982\u4f55\u4fdd\u8bc1\u8bfb\u53d6\u4e0a\u6765\u7684\u6570\u636e，\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u62a5\u6587\u5462？<\/p>\n","protected":false},"author":2,"featured_media":85664,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,970,16,396],"topic":[],"class_list":["post-85667","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux","tag-tcp","tag-16","tag-396"],"yoast_head":"\n \u624b\u5199\u4e00\u4e2aC++ TCP\u670d\u52a1\u5668\u5b9e\u73b0\u81ea\u5b9a\u4e49\u534f\u8bae(\u987a\u4fbf\u89e3\u51b3\u7c98\u5305\u95ee\u9898) - 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