#define _GNU_SOURCE
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
+#include <limits.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/wait.h>
-#include "../src/meshlink.h"
+#ifdef __linux__
+#include <sys/prctl.h>
+#endif
-volatile bool bar_reachable = false;
-volatile bool bar_responded = false;
+#include "meshlink.h"
+#include "utils.h"
-void log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
- if(mesh)
- fprintf(stderr, "(%s) ", mesh->name);
- fprintf(stderr, "[%d] %s\n", level, text);
-}
+/*
+ * To run this test case, direct a large file to strd
+ */
-void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
- if(!strcmp(node->name, "bar"))
- bar_reachable = reachable;
-}
+static struct sync_flag a_started;
+static struct sync_flag a_stopped;
+static struct sync_flag b_responded;
+
+static void a_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+ (void)mesh;
+ (void)channel;
+ (void)data;
+ (void)len;
-void foo_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
- fprintf(stderr, "Foo received from Bar:\n%s", (char*)data);
- fprintf(stderr, "==============================\n");
- fprintf(stderr, "%s", (char*)data );
- fprintf(stdout, "%s", (char*)data );
+ // One way only.
}
-void bar_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
- // Echo the data back.
- fprintf(stderr, "Bar received:\n%s", (char*)data);
- fprintf(stderr, "==============================\n");
- meshlink_channel_send(mesh, channel, data, len);
+static void b_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+ (void)mesh;
+ (void)channel;
+
+ if(!len) {
+ set_sync_flag(&a_stopped, true);
+ meshlink_channel_close(mesh, channel);
+ return;
+ }
+
+ assert(write(1, data, len) == (ssize_t)len);
}
-bool reject_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
+static bool reject_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
+ (void)mesh;
+ (void)channel;
+ (void)port;
+ (void)data;
+ (void)len;
+
return false;
}
-bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
- if(port != 7)
+static bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
+ if(port != 7) {
return false;
- meshlink_set_channel_receive_cb(mesh, channel, bar_receive_cb);
- if(data)
- bar_receive_cb(mesh, channel, data, len);
- return true;
-}
+ }
-void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
- meshlink_set_channel_poll_cb(mesh, channel, NULL);
- bar_responded=true;
-}
+ set_sync_flag(&a_started, true);
-int main1(int rfd, int wfd) {
- meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
+ meshlink_set_channel_receive_cb(mesh, channel, b_receive_cb);
- meshlink_handle_t *mesh1 = meshlink_open("channels_conf.1", "foo", "channels", DEV_CLASS_BACKBONE);
- if(!mesh1) {
- fprintf(stderr, "Could not initialize configuration for foo\n");
- return 1;
+ if(data) {
+ b_receive_cb(mesh, channel, data, len);
}
- meshlink_add_address(mesh1, "localhost");
-
- char *data = meshlink_export(mesh1);
- if(!data) {
- fprintf(stderr, "Foo could not export its configuration\n");
- return 1;
- }
+ return true;
+}
- size_t len = strlen(data);
- write(wfd, &len, sizeof len);
- write(wfd, data, len);
- free(data);
+static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
+ (void)len;
- read(rfd, &len, sizeof len);
- char indata[len + 1];
- read(rfd, indata, len);
- indata[len] = 0;
+ meshlink_set_channel_poll_cb(mesh, channel, NULL);
+ set_sync_flag(&b_responded, true);
+}
- fprintf(stderr, "Foo exchanged data\n");
+static int main1(void) {
+ close(1);
- meshlink_import(mesh1, indata);
+ meshlink_handle_t *mesh = meshlink_open("echo-fork_conf.1", "a", "echo-fork", DEV_CLASS_BACKBONE);
+ assert(mesh);
- meshlink_set_channel_accept_cb(mesh1, reject_cb);
- meshlink_set_node_status_cb(mesh1, status_cb);
+ meshlink_set_channel_accept_cb(mesh, reject_cb);
- if(!meshlink_start(mesh1)) {
- fprintf(stderr, "Foo could not start\n");
- return 1;
- }
+ assert(meshlink_start(mesh));
- for(int i = 0; i < 20; i++) {
- sleep(1);
- if(bar_reachable)
- break;
- }
+ // Open a channel.
- if(!bar_reachable) {
- fprintf(stderr, "Bar not reachable for foo after 20 seconds\n");
- return 1;
- }
+ meshlink_node_t *b = meshlink_get_node(mesh, "b");
+ assert(b);
- // Open a channel from foo to bar.
-
- meshlink_node_t *bar = meshlink_get_node(mesh1, "bar");
- if(!bar) {
- fprintf(stderr, "Foo could not find bar\n");
- return 1;
- }
+ meshlink_channel_t *channel = meshlink_channel_open(mesh, b, 7, a_receive_cb, NULL, 0);
+ assert(channel);
- meshlink_channel_t *channel = meshlink_channel_open(mesh1, bar, 7, foo_receive_cb, NULL, 0);
- meshlink_set_channel_poll_cb(mesh1, channel, poll_cb);
+ meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
// read and buffer stdin
- int BUF_SIZE = 1024;
+ int BUF_SIZE = 1024 * 1024;
char buffer[BUF_SIZE];
- size_t contentSize = 1;
- char *content = malloc( sizeof(char) * BUF_SIZE );
- if (!content) {
- fprintf(stderr, "Could not allocate buffer\n");
- }
- fprintf(stderr, "Foo reading from stdin...\n");
- content[0] = '\0';
- while(fgets(buffer,BUF_SIZE,stdin)) {
- char *old = content;
- contentSize += strlen(buffer);
- content = realloc(content, contentSize);
- strcat(content,buffer);
- }
+ assert(wait_sync_flag(&b_responded, 20));
- for(int i = 0; i < 5; i++) {
- sleep(1);
- if(bar_responded)
- break;
- }
+ do {
+ ssize_t len = read(0, buffer, BUF_SIZE);
- if(!bar_responded) {
- fprintf(stderr, "Bar did not respond to foo's channel message\n");
- return 1;
- }
+ if(len <= 0) {
+ break;
+ }
- fprintf(stderr, "Foo sending:\n%s", content);
- fprintf(stderr, "==============================\n");
+ char *p = buffer;
- if(meshlink_channel_send(mesh1, channel, content, contentSize) != contentSize)
- fprintf(stderr, "Could not send whole message\n");
+ while(len > 0) {
+ ssize_t sent = meshlink_channel_send(mesh, channel, p, len);
- sleep(20);
+ if(sent < 0) {
+ fprintf(stderr, "Sending message failed\n");
+ return 1;
+ }
- free(content);
+ if(!sent) {
+ usleep(100000);
+ } else {
+ len -= sent;
+ p += sent;
+ }
+ }
+ } while(true);
- meshlink_channel_close(mesh1, channel);
+ meshlink_channel_close(mesh, channel);
// Clean up.
- meshlink_close(mesh1);
+ meshlink_close(mesh);
return 0;
}
-int main2(int rfd, int wfd) {
- sleep(1);
+static int main2(void) {
+#ifdef __linux__
+ prctl(PR_SET_PDEATHSIG, SIGTERM);
+#endif
- meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
+ close(0);
- meshlink_handle_t *mesh2 = meshlink_open("channels_conf.2", "bar", "channels", DEV_CLASS_BACKBONE);
- if(!mesh2) {
- fprintf(stderr, "Could not initialize configuration for bar\n");
- return 1;
- }
+ // Start mesh and wait for incoming channels.
- char *data = meshlink_export(mesh2);
- if(!data) {
- fprintf(stderr, "Bar could not export its configuration\n");
- return 1;
- }
-
- size_t len = strlen(data);
- if(write(wfd, &len, sizeof len) <= 0) abort();
- if(write(wfd, data, len) <= 0) abort();
- free(data);
-
- read(rfd, &len, sizeof len);
- char indata[len + 1];
- read(rfd, indata, len);
- indata[len] = 0;
+ meshlink_handle_t *mesh = meshlink_open("echo-fork_conf.2", "b", "echo-fork", DEV_CLASS_BACKBONE);
+ assert(mesh);
- fprintf(stderr, "Bar exchanged data\n");
+ meshlink_set_channel_accept_cb(mesh, accept_cb);
- meshlink_import(mesh2, indata);
+ assert(meshlink_start(mesh));
- meshlink_set_channel_accept_cb(mesh2, accept_cb);
-
- if(!meshlink_start(mesh2)) {
- fprintf(stderr, "Bar could not start\n");
- return 1;
- }
+ // Let it run until a disappears.
- sleep(20);
+ assert(wait_sync_flag(&a_started, 20));
+ assert(wait_sync_flag(&a_stopped, 1000000));
// Clean up.
- meshlink_close(mesh2);
+ meshlink_close(mesh);
return 0;
}
-int main(int argc, char *argv[]) {
- int fda[2], fdb[2], result;
+int main() {
+ meshlink_set_log_cb(NULL, MESHLINK_WARNING, log_cb);
+
+ // Initialize and exchange configuration.
+
+ meshlink_handle_t *mesh_a, *mesh_b;
+
+ open_meshlink_pair(&mesh_a, &mesh_b, "echo-fork");
+ close_meshlink_pair(mesh_a, mesh_b);
+
+ if(!fork()) {
+ return main2();
+ }
- pipe2(fda, 0);
- pipe2(fdb, 0);
+ assert(main1() == 0);
- if(fork())
- return main1(fda[0], fdb[1]);
- else
- return main2(fdb[0], fda[1]);
+ int wstatus = 0;
+ assert(wait(&wstatus) != -1);
+ assert(WIFEXITED(wstatus));
+ assert(WEXITSTATUS(wstatus) == 0);
}
projects / meshlink / blobdiff