diff options
Diffstat (limited to 'src/tools/oecho')
| -rw-r--r-- | src/tools/oecho/CMakeLists.txt | 16 | ||||
| -rw-r--r-- | src/tools/oecho/oecho.c | 152 |
2 files changed, 168 insertions, 0 deletions
diff --git a/src/tools/oecho/CMakeLists.txt b/src/tools/oecho/CMakeLists.txt new file mode 100644 index 00000000..50a66138 --- /dev/null +++ b/src/tools/oecho/CMakeLists.txt @@ -0,0 +1,16 @@ +include_directories(${CMAKE_CURRENT_SOURCE_DIR}) +include_directories(${CMAKE_CURRENT_BINARY_DIR}) + +include_directories(${CMAKE_SOURCE_DIR}/include) +include_directories(${CMAKE_BINARY_DIR}/include) + +set(SOURCE_FILES + # Add source files here + oecho.c + ) + +add_executable(oecho ${SOURCE_FILES}) + +target_link_libraries(oecho LINK_PUBLIC ouroboros-dev) + +install(TARGETS oecho RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}) diff --git a/src/tools/oecho/oecho.c b/src/tools/oecho/oecho.c new file mode 100644 index 00000000..3896a85a --- /dev/null +++ b/src/tools/oecho/oecho.c @@ -0,0 +1,152 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2018 + * + * A simple echo application + * + * Dimitri Staessens <dimitri.staessens@ugent.be> + * Sander Vrijders <sander.vrijders@ugent.be> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define _POSIX_C_SOURCE 199309L + +#include <ouroboros/dev.h> + +#include <stdio.h> +#include <string.h> + +#define BUF_SIZE 256 + +static void usage(void) +{ + printf("Usage: echo-app [OPTION]...\n" + "Sends an echo between a server and a client\n\n" + " -l, --listen Run in server mode\n" + " --help Display this help text and exit\n"); +} + +int server_main(void) +{ + int fd = 0; + char buf[BUF_SIZE]; + ssize_t count = 0; + + printf("Starting the server.\n"); + + while (true) { + fd = flow_accept(NULL, NULL); + if (fd < 0) { + printf("Failed to accept flow.\n"); + break; + } + + printf("New flow.\n"); + + count = flow_read(fd, &buf, BUF_SIZE); + if (count < 0) { + printf("Failed to read SDU.\n"); + flow_dealloc(fd); + continue; + } + + printf("Message from client is %.*s.\n", (int) count, buf); + + if (flow_write(fd, buf, count) == -1) { + printf("Failed to write SDU.\n"); + flow_dealloc(fd); + continue; + } + + flow_dealloc(fd); + } + + return 0; +} + +int client_main(void) +{ + int fd = 0; + char buf[BUF_SIZE]; + char * message = "Client says hi!"; + ssize_t count = 0; + + fd = flow_alloc("echo", NULL, NULL); + if (fd < 0) { + printf("Failed to allocate flow.\n"); + return -1; + } + + if (flow_write(fd, message, strlen(message) + 1) < 0) { + printf("Failed to write SDU.\n"); + flow_dealloc(fd); + return -1; + } + + count = flow_read(fd, buf, BUF_SIZE); + if (count < 0) { + printf("Failed to read SDU.\n"); + flow_dealloc(fd); + return -1; + } + + printf("Server replied with %.*s\n", (int) count, buf); + + flow_dealloc(fd); + + return 0; +} + +int main(int argc, char ** argv) +{ + int ret = -1; + bool server = false; + + argc--; + argv++; + while (argc > 0) { + if (strcmp(*argv, "-l") == 0 || + strcmp(*argv, "--listen") == 0) { + server = true; + } else { + usage(); + return 0; + } + argc--; + argv++; + } + + if (server) + ret = server_main(); + else + ret = client_main(); + + return ret; +} |