78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
#include "tcp_transport.h"
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#include <esp_log.h>
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#include <unistd.h>
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#include <cstring>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#define TAG "TcpTransport"
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TcpTransport::TcpTransport() : fd_(-1) {}
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TcpTransport::~TcpTransport() {
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if (fd_ != -1) {
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close(fd_);
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}
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}
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bool TcpTransport::Connect(const char* host, int port) {
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struct sockaddr_in server_addr;
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bzero(&server_addr, sizeof(server_addr));
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = htons(port);
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// host is domain
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struct hostent *server = gethostbyname(host);
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if (server == NULL) {
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ESP_LOGE(TAG, "Failed to get host by name");
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return false;
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}
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memcpy(&server_addr.sin_addr, server->h_addr, server->h_length);
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fd_ = socket(AF_INET, SOCK_STREAM, 0);
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if (fd_ < 0) {
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ESP_LOGE(TAG, "Failed to create socket");
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return false;
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}
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int ret = connect(fd_, (struct sockaddr*)&server_addr, sizeof(server_addr));
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if (ret < 0) {
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ESP_LOGE(TAG, "Failed to connect to %s:%d", host, port);
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close(fd_);
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fd_ = -1;
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return false;
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}
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connected_ = true;
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return true;
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}
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void TcpTransport::Disconnect() {
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if (fd_ != -1) {
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close(fd_);
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fd_ = -1;
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}
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connected_ = false;
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}
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int TcpTransport::Send(const char* data, size_t length) {
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int ret = send(fd_, data, length, 0);
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if (ret <= 0) {
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connected_ = false;
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ESP_LOGE(TAG, "Send failed: %d", ret);
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}
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return ret;
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}
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int TcpTransport::Receive(char* buffer, size_t bufferSize) {
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int ret = recv(fd_, buffer, bufferSize, 0);
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if (ret == 0) {
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connected_ = false;
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} else if (ret < 0) {
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ESP_LOGE(TAG, "Receive failed: %d", ret);
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}
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return ret;
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}
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