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#include "stratum_proxy.h"
#include "mining_payment.h"
#include "esp_log.h"
#include "lwip/sockets.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include <string.h>
static const char *TAG = "stratum_proxy";
static uint16_t s_port = 3333;
static bool s_running = false;
static TaskHandle_t s_task_handle = NULL;
static int s_server_fd = -1;
static stratum_job_t s_current_job = {0};
static stratum_proxy_stats_t s_stats = {0};
static void proxy_client_handler(void *arg)
{
int client_fd = (int)(intptr_t)arg;
struct sockaddr_in client_addr;
socklen_t addr_len = sizeof(client_addr);
getpeername(client_fd, (struct sockaddr *)&client_addr, &addr_len);
uint32_t client_ip = client_addr.sin_addr.s_addr;
ESP_LOGI(TAG, "Miner connected from 0x%08lx", (unsigned long)client_ip);
if (s_current_job.valid) {
char job_json[512];
snprintf(job_json, sizeof(job_json),
"{\"id\":1,\"method\":\"mining.notify\",\"params\":[\"%lu\",\"%08lx%08lx%08lx%08lx%08lx%08lx%08lx%08lx\",\"\",\"\",\"\",\"%08lx\",\"%08lx\",\"%08lx\",true]}\n",
(unsigned long)s_current_job.job_id,
(unsigned long)0, (unsigned long)0, (unsigned long)0, (unsigned long)0,
(unsigned long)0, (unsigned long)0, (unsigned long)0, (unsigned long)0,
(unsigned long)s_current_job.nbits, (unsigned long)s_current_job.ntime,
(unsigned long)s_current_job.version);
send(client_fd, job_json, strlen(job_json), 0);
}
char buf[1024];
while (s_running) {
int len = recv(client_fd, buf, sizeof(buf) - 1, 0);
if (len <= 0) break;
buf[len] = '\0';
ESP_LOGI(TAG, "Received from miner: %s", buf);
s_stats.total_shares++;
s_stats.total_accepted++;
}
ESP_LOGI(TAG, "Miner disconnected from 0x%08lx", (unsigned long)client_ip);
close(client_fd);
vTaskDelete(NULL);
}
static void proxy_server_task(void *arg)
{
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = INADDR_ANY;
server_addr.sin_port = htons(s_port);
s_server_fd = socket(AF_INET, SOCK_STREAM, 0);
if (s_server_fd < 0) {
ESP_LOGE(TAG, "Failed to create socket");
vTaskDelete(NULL);
return;
}
int opt = 1;
setsockopt(s_server_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
if (bind(s_server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) != 0) {
ESP_LOGE(TAG, "Failed to bind to port %u", (unsigned)s_port);
close(s_server_fd);
s_server_fd = -1;
vTaskDelete(NULL);
return;
}
if (listen(s_server_fd, 5) != 0) {
ESP_LOGE(TAG, "Failed to listen");
close(s_server_fd);
s_server_fd = -1;
vTaskDelete(NULL);
return;
}
ESP_LOGI(TAG, "Stratum proxy listening on port %u", (unsigned)s_port);
while (s_running) {
struct sockaddr_in client_addr;
socklen_t client_len = sizeof(client_addr);
int client_fd = accept(s_server_fd, (struct sockaddr *)&client_addr, &client_len);
if (client_fd < 0) continue;
s_stats.active_miners++;
char task_name[20];
snprintf(task_name, sizeof(task_name), "miner_%d", client_fd);
xTaskCreate(proxy_client_handler, task_name, 4096, (void *)(intptr_t)client_fd, 3, NULL);
}
close(s_server_fd);
s_server_fd = -1;
vTaskDelete(NULL);
}
esp_err_t stratum_proxy_init(uint16_t port)
{
s_port = port;
memset(&s_current_job, 0, sizeof(s_current_job));
memset(&s_stats, 0, sizeof(s_stats));
s_running = true;
BaseType_t ret = xTaskCreate(proxy_server_task, "stratum_proxy", 4096, NULL, 4, &s_task_handle);
if (ret != pdPASS) {
ESP_LOGE(TAG, "Failed to create proxy task");
s_running = false;
return ESP_FAIL;
}
ESP_LOGI(TAG, "Stratum proxy initialized on port %u", (unsigned)port);
return ESP_OK;
}
void stratum_proxy_set_job(const stratum_job_t *job)
{
if (job) {
memcpy(&s_current_job, job, sizeof(stratum_job_t));
s_stats.nbits = job->nbits;
s_stats.current_hashprice = mining_get_current_hashprice();
}
}
const stratum_job_t *stratum_proxy_get_current_job(void)
{
return &s_current_job;
}
void stratum_proxy_get_stats(stratum_proxy_stats_t *stats)
{
if (stats) {
*stats = s_stats;
stats->current_hashprice = mining_get_current_hashprice();
}
}
void stratum_proxy_stop(void)
{
s_running = false;
if (s_server_fd >= 0) {
close(s_server_fd);
s_server_fd = -1;
}
if (s_task_handle) {
vTaskDelay(pdMS_TO_TICKS(500));
s_task_handle = NULL;
}
}
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