85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
extern "C" {
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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}
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#include <expected>
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#include <string>
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#include <vector>
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#include <span>
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#include <iostream>
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#include <tcpclient.hpp>
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TCPClient::TCPClient() {
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sock = 0;
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}
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std::expected<void, std::string> TCPClient::conn(const std::string address, const int port) {
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sock = socket(AF_INET, SOCK_STREAM, 0);
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if (sock < 0) {
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return std::unexpected("Error opening socket");
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}
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struct sockaddr_in serv_addr;
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memset(&serv_addr, 0, sizeof(serv_addr));
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_port = htons(port);
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const char* addr = address.data();
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if (inet_pton(AF_INET, addr, &serv_addr.sin_addr) <= 0) {
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return std::unexpected("Invalid server IP address");
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}
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struct timeval timeout;
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timeout.tv_sec = 3;
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timeout.tv_usec = 0;
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if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof timeout) < 0) {
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return std::unexpected("Set timeout error");
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}
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if (setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof timeout) < 0) {
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return std::unexpected("Set timeout error");
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}
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if (connect(sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
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return std::unexpected("Connecting error");
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}
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return {};
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}
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std::expected<int, std::string> TCPClient::writeBytes(std::span<const std::byte> payload) {
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int n = 0;
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if ((n = write(sock, payload.data(), payload.size())) < 0) {
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return std::unexpected("Write error");
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}
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return n;
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}
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std::expected<int, std::string> TCPClient::writeBytes(std::string payload) {
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int n = 0;
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if ((n = write(sock, payload.data(), payload.size())) < 0) {
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return std::unexpected("Write error");
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}
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return n;
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}
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std::expected<int, std::string> TCPClient::readBytes(std::vector<std::byte>* buffer) {
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int n = 0;
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if ((n = read(sock, buffer->data(), buffer->size())) < 0) {
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return std::unexpected("Read error");
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}
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return n;
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}
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std::expected<int, std::string> TCPClient::readBytes(std::vector<uint8_t>* buffer) {
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return read(sock, buffer->data(), buffer->size());
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}
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