fix: 重构基础通信框架为异步事件循环，并修复 KCP conv 错位与接收漏斗堵塞问题

src/apps/test_main.c

@@ -51,7 +51,15 @@ static void run_server(OmniProtocol proto, uint16_t port)
     char buf[4096];
     for (;;) {
         ssize_t n = omni_recv(ctx, buf, sizeof(buf));
-        if (n <= 0) {
+        if (n < 0) {
+            logger_log("INFO", "test", "server_recv_end n=%zd", n);
+            break;
+        }
+        if (n == 0) {
+            if (proto == OMNI_PROTO_KCP) {
+                usleep(10 * 1000);
+                continue;
+            }
             logger_log("INFO", "test", "server_recv_end n=%zd", n);
             break;
         }
@@ -98,7 +106,16 @@ static void run_client(OmniProtocol proto, const char *host, uint16_t port)
         if (n <= 0) break;
 
         ssize_t m = omni_recv(ctx, recv_buf, sizeof(recv_buf));
-        if (m <= 0) {
+        if (m < 0) {
+            logger_log("INFO", "test", "client_recv_end i=%d bytes=%zd", i, m);
+            break;
+        }
+        if (m == 0) {
+            if (proto == OMNI_PROTO_KCP) {
+                usleep(10 * 1000);
+                --i;
+                continue;
+            }
             logger_log("INFO", "test", "client_recv_end i=%d bytes=%zd", i, m);
             break;
         }
@@ -158,4 +175,3 @@ int main(int argc, char **argv)
 
     return 0;
 }
-

src/core/logger.c

@@ -10,15 +10,27 @@
 #include <stdarg.h>
 #include <string.h>
 #include <inttypes.h>
+#include <stdlib.h>
 
 static OmniStats g_stats;
 static FILE *g_json_fp = NULL;
+static int g_min_level = 1; /* default INFO */
 
 static uint64_t now_ms(void)
 {
     return omni_now_ms();
 }
 
+static int level_to_int(const char *level)
+{
+    if (!level) return 1;
+    if (strcmp(level, "DEBUG") == 0) return 0;
+    if (strcmp(level, "INFO") == 0) return 1;
+    if (strcmp(level, "WARN") == 0) return 2;
+    if (strcmp(level, "ERROR") == 0) return 3;
+    return 1;
+}
+
 static void ewma_update(double *avg, double sample, double alpha)
 {
     if (*avg <= 0.0) {
@@ -36,6 +48,9 @@ void logger_init(void)
     g_stats.send_call_min_ms = UINT64_MAX;
     g_stats.recv_call_min_ms = UINT64_MAX;
 
+    const char *lvl_env = getenv("OMNI_LOG_LEVEL");
+    g_min_level = level_to_int(lvl_env);
+
     if (!g_json_fp) {
         g_json_fp = fopen("omni_logs.jsonl", "a");
     }
@@ -230,6 +245,10 @@ void logger_log(const char *level, const char *component,
     const char *lvl = level ? level : "INFO";
     const char *comp = component ? component : "general";
 
+    if (level_to_int(lvl) < g_min_level) {
+        return;
+    }
+
     FILE *fp = stderr;
     print_timestamp(fp);
     fprintf(fp, "level=%s component=%s ", lvl, comp);

src/core/network.c

@@ -96,6 +96,9 @@ ssize_t omni_send(OmniContext *ctx, const void *buf, size_t len)
     }
     logger_log("DEBUG", "network", "omni_send proto=%d bytes=%zd call_ms=%llu",
                (int)ctx->proto, n, (unsigned long long)(t1 - t0));
+    if (n > 0) {
+        logger_print_performance_log("on_send");
+    }
     return n;
 }
 
@@ -114,6 +117,9 @@ ssize_t omni_recv(OmniContext *ctx, void *buf, size_t len)
     }
     logger_log("DEBUG", "network", "omni_recv proto=%d bytes=%zd call_ms=%llu",
                (int)ctx->proto, n, (unsigned long long)(t1 - t0));
+    if (n > 0) {
+        logger_print_performance_log("on_recv");
+    }
     return n;
 }
 
@@ -126,4 +132,3 @@ void omni_close(OmniContext *ctx)
     logger_print_performance_log("final");
     free(ctx);
 }
-

src/protocols/kcp_impl.c

@@ -44,8 +44,6 @@ static OmniContext *kcp_init(OmniRole role,
                              const char *peer_ip,
                              uint16_t peer_port)
 {
-    (void)role;
-
     struct KcpContext *ctx = (struct KcpContext *)calloc(1, sizeof(*ctx));
     if (!ctx) return NULL;
 
@@ -78,8 +76,9 @@ static OmniContext *kcp_init(OmniRole role,
 
     ctx->fd = fd;
 
-    /* conv 可简单使用端口号 */
+    /* conv 必须两端一致：server 用 bind_port，client 用 peer_port */
-    IUINT32 conv = (IUINT32)peer_port;
+    IUINT32 conv = (role == OMNI_ROLE_SERVER) ? (IUINT32)bind_port
+                                              : (IUINT32)peer_port;
     ikcpcb *kcp = ikcp_create(conv, ctx);
     if (!kcp) {
         logger_log("ERROR", "kcp", "ikcp_create_failed");
@@ -95,10 +94,11 @@ static OmniContext *kcp_init(OmniRole role,
     ikcp_wndsize(kcp, 128, 128);
 
     logger_log("INFO", "kcp",
-               "init bind_port=%u peer_ip=%s peer_port=%u",
+               "init bind_port=%u peer_ip=%s peer_port=%u conv=%u",
                (unsigned)bind_port,
                peer_ip ? peer_ip : "NULL",
-               (unsigned)peer_port);
+               (unsigned)peer_port,
+               (unsigned)conv);
 
     return (OmniContext *)ctx;
 }