in_tcp: test: Add a source IP injection test case

Signed-off-by: Hiroshi Hatake <[email protected]>

tests/runtime/in_tcp.c

@@ -255,6 +255,69 @@ void flb_test_tcp()
     test_ctx_destroy(ctx);
 }
 
+void flb_test_tcp_with_source_address()
+{
+    struct flb_lib_out_cb cb_data;
+    struct test_ctx *ctx;
+    flb_sockfd_t fd;
+    int ret;
+    int num;
+    ssize_t w_size;
+
+    char *buf = "{\"test\":\"msg\"}";
+    size_t size = strlen(buf);
+
+    clear_output_num();
+
+    cb_data.cb = cb_check_result_json;
+    cb_data.data = "\"test\":\"msg\",\"source_host\":\"tcp://";
+
+    ctx = test_ctx_create(&cb_data);
+    if (!TEST_CHECK(ctx != NULL)) {
+        TEST_MSG("test_ctx_create failed");
+        exit(EXIT_FAILURE);
+    }
+
+    ret = flb_input_set(ctx->flb, ctx->i_ffd,
+                        "source_address_key", "source_host",
+                        NULL);
+    TEST_CHECK(ret == 0);
+
+    ret = flb_output_set(ctx->flb, ctx->o_ffd,
+                         "match", "*",
+                         "format", "json",
+                         NULL);
+    TEST_CHECK(ret == 0);
+
+    /* Start the engine */
+    ret = flb_start(ctx->flb);
+    TEST_CHECK(ret == 0);
+
+    /* use default host/port */
+    fd = connect_tcp(NULL, -1);
+    if (!TEST_CHECK(fd >= 0)) {
+        exit(EXIT_FAILURE);
+    }
+
+    w_size = send(fd, buf, size, 0);
+    if (!TEST_CHECK(w_size == size)) {
+        TEST_MSG("failed to send, errno=%d", errno);
+        flb_socket_close(fd);
+        exit(EXIT_FAILURE);
+    }
+
+    /* waiting to flush */
+    flb_time_msleep(1500);
+
+    num = get_output_num();
+    if (!TEST_CHECK(num > 0))  {
+        TEST_MSG("no outputs");
+    }
+
+    flb_socket_close(fd);
+    test_ctx_destroy(ctx);
+}
+
 void flb_test_tcp_with_tls()
 {
     struct flb_connection *client_connection;
@@ -552,6 +615,7 @@ void flb_test_issue_5336()
 
 TEST_LIST = {
     {"tcp", flb_test_tcp},
+    {"tcp_with_source_address", flb_test_tcp_with_source_address},
     {"tcp_with_tls", flb_test_tcp_with_tls},
     {"format_none", flb_test_format_none},
     {"format_none_separator", flb_test_format_none_separator},