481 lines
13 KiB
C
481 lines
13 KiB
C
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#include "socket_examples.h"
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#include "lwip/opt.h"
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#if LWIP_SOCKET
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#include "lwip/sockets.h"
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#include "lwip/sys.h"
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#include <string.h>
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#include <stdio.h>
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#ifndef SOCK_TARGET_HOST
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#define SOCK_TARGET_HOST "192.168.1.1"
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#endif
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#ifndef SOCK_TARGET_PORT
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#define SOCK_TARGET_PORT 80
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#endif
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/** This is an example function that tests
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blocking- and nonblocking connect. */
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static void
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sockex_nonblocking_connect(void *arg)
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{
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int s;
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int ret;
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u32_t opt;
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struct sockaddr_in addr;
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fd_set readset;
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fd_set writeset;
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fd_set errset;
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struct timeval tv;
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u32_t ticks_a, ticks_b;
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int err;
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LWIP_UNUSED_ARG(arg);
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/* set up address to connect to */
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memset(&addr, 0, sizeof(addr));
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addr.sin_len = sizeof(addr);
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addr.sin_family = AF_INET;
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addr.sin_port = PP_HTONS(SOCK_TARGET_PORT);
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addr.sin_addr.s_addr = inet_addr(SOCK_TARGET_HOST);
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/* first try blocking: */
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/* create the socket */
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s = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s >= 0", s >= 0);
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/* connect */
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ret = lwip_connect(s, (struct sockaddr*)&addr, sizeof(addr));
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/* should succeed */
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LWIP_ASSERT("ret == 0", ret == 0);
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/* write something */
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ret = lwip_write(s, "test", 4);
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LWIP_ASSERT("ret == 4", ret == 4);
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/* close */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == 0", ret == 0);
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/* now try nonblocking and close before being connected */
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/* create the socket */
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s = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s >= 0", s >= 0);
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/* nonblocking */
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opt = lwip_fcntl(s, F_GETFL, 0);
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LWIP_ASSERT("ret != -1", ret != -1);
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opt |= O_NONBLOCK;
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ret = lwip_fcntl(s, F_SETFL, opt);
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LWIP_ASSERT("ret != -1", ret != -1);
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/* connect */
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ret = lwip_connect(s, (struct sockaddr*)&addr, sizeof(addr));
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/* should have an error: "inprogress" */
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EINPROGRESS", err == EINPROGRESS);
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/* close */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == 0", ret == 0);
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/* try to close again, should fail with EBADF */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EBADF", err == EBADF);
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printf("closing socket in nonblocking connect succeeded\n");
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/* now try nonblocking, connect should succeed:
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this test only works if it is fast enough, i.e. no breakpoints, please! */
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/* create the socket */
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s = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s >= 0", s >= 0);
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/* nonblocking */
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opt = 1;
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ret = lwip_ioctl(s, FIONBIO, &opt);
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LWIP_ASSERT("ret == 0", ret == 0);
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/* connect */
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ret = lwip_connect(s, (struct sockaddr*)&addr, sizeof(addr));
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/* should have an error: "inprogress" */
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EINPROGRESS", err == EINPROGRESS);
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/* write should fail, too */
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ret = lwip_write(s, "test", 4);
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EINPROGRESS", err == EINPROGRESS);
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FD_ZERO(&readset);
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FD_SET(s, &readset);
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FD_ZERO(&writeset);
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FD_SET(s, &writeset);
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FD_ZERO(&errset);
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FD_SET(s, &errset);
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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/* select without waiting should fail */
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ret = lwip_select(s + 1, &readset, &writeset, &errset, &tv);
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LWIP_ASSERT("ret == 0", ret == 0);
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LWIP_ASSERT("!FD_ISSET(s, &writeset)", !FD_ISSET(s, &writeset));
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LWIP_ASSERT("!FD_ISSET(s, &readset)", !FD_ISSET(s, &readset));
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LWIP_ASSERT("!FD_ISSET(s, &errset)", !FD_ISSET(s, &errset));
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FD_ZERO(&readset);
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FD_SET(s, &readset);
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FD_ZERO(&writeset);
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FD_SET(s, &writeset);
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FD_ZERO(&errset);
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FD_SET(s, &errset);
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ticks_a = sys_now();
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/* select with waiting should succeed */
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ret = lwip_select(s + 1, &readset, &writeset, &errset, NULL);
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ticks_b = sys_now();
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LWIP_ASSERT("ret == 1", ret == 1);
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LWIP_ASSERT("FD_ISSET(s, &writeset)", FD_ISSET(s, &writeset));
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LWIP_ASSERT("!FD_ISSET(s, &readset)", !FD_ISSET(s, &readset));
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LWIP_ASSERT("!FD_ISSET(s, &errset)", !FD_ISSET(s, &errset));
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/* now write should succeed */
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ret = lwip_write(s, "test", 4);
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LWIP_ASSERT("ret == 4", ret == 4);
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/* close */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == 0", ret == 0);
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printf("select() needed %d ticks to return writable\n", ticks_b - ticks_a);
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/* now try nonblocking to invalid address:
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this test only works if it is fast enough, i.e. no breakpoints, please! */
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/* create the socket */
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s = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s >= 0", s >= 0);
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/* nonblocking */
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opt = 1;
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ret = lwip_ioctl(s, FIONBIO, &opt);
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LWIP_ASSERT("ret == 0", ret == 0);
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addr.sin_addr.s_addr++;
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/* connect */
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ret = lwip_connect(s, (struct sockaddr*)&addr, sizeof(addr));
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/* should have an error: "inprogress" */
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EINPROGRESS", err == EINPROGRESS);
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/* write should fail, too */
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ret = lwip_write(s, "test", 4);
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EINPROGRESS", err == EINPROGRESS);
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FD_ZERO(&readset);
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FD_SET(s, &readset);
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FD_ZERO(&writeset);
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FD_SET(s, &writeset);
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FD_ZERO(&errset);
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FD_SET(s, &errset);
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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/* select without waiting should fail */
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ret = lwip_select(s + 1, &readset, &writeset, &errset, &tv);
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LWIP_ASSERT("ret == 0", ret == 0);
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FD_ZERO(&readset);
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FD_SET(s, &readset);
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FD_ZERO(&writeset);
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FD_SET(s, &writeset);
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FD_ZERO(&errset);
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FD_SET(s, &errset);
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ticks_a = sys_now();
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/* select with waiting should eventually succeed and return errset! */
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ret = lwip_select(s + 1, &readset, &writeset, &errset, NULL);
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ticks_b = sys_now();
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LWIP_ASSERT("ret > 0", ret > 0);
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LWIP_ASSERT("FD_ISSET(s, &errset)", FD_ISSET(s, &errset));
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LWIP_ASSERT("!FD_ISSET(s, &readset)", !FD_ISSET(s, &readset));
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LWIP_ASSERT("!FD_ISSET(s, &writeset)", !FD_ISSET(s, &writeset));
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/* close */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == 0", ret == 0);
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printf("select() needed %d ticks to return error\n", ticks_b - ticks_a);
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printf("all tests done, thread ending\n");
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}
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/** This is an example function that tests
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the recv function (timeout etc.). */
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static void
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sockex_testrecv(void *arg)
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{
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int s;
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int ret;
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int err;
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int opt;
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struct sockaddr_in addr;
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size_t len;
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char rxbuf[1024];
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fd_set readset;
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fd_set errset;
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struct timeval tv;
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LWIP_UNUSED_ARG(arg);
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/* set up address to connect to */
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memset(&addr, 0, sizeof(addr));
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addr.sin_len = sizeof(addr);
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addr.sin_family = AF_INET;
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addr.sin_port = PP_HTONS(SOCK_TARGET_PORT);
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addr.sin_addr.s_addr = inet_addr(SOCK_TARGET_HOST);
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/* first try blocking: */
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/* create the socket */
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s = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s >= 0", s >= 0);
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/* connect */
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ret = lwip_connect(s, (struct sockaddr*)&addr, sizeof(addr));
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/* should succeed */
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LWIP_ASSERT("ret == 0", ret == 0);
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/* set recv timeout (100 ms) */
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opt = 100;
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ret = lwip_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &opt, sizeof(int));
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LWIP_ASSERT("ret == 0", ret == 0);
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/* write the start of a GET request */
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#define SNDSTR1 "G"
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len = strlen(SNDSTR1);
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ret = lwip_write(s, SNDSTR1, len);
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LWIP_ASSERT("ret == len", ret == (int)len);
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/* should time out if the other side is a good HTTP server */
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ret = lwip_read(s, rxbuf, 1);
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LWIP_ASSERT("ret == -1", ret == -1);
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err = errno;
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LWIP_ASSERT("errno == EAGAIN", err == EAGAIN);
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/* write the rest of a GET request */
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#define SNDSTR2 "ET / HTTP_1.1\r\n\r\n"
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len = strlen(SNDSTR2);
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ret = lwip_write(s, SNDSTR2, len);
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LWIP_ASSERT("ret == len", ret == (int)len);
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/* wait a while: should be enough for the server to send a response */
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sys_msleep(1000);
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/* should not time out but receive a response */
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ret = lwip_read(s, rxbuf, 1024);
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LWIP_ASSERT("ret > 0", ret > 0);
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/* now select should directly return because the socket is readable */
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FD_ZERO(&readset);
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FD_ZERO(&errset);
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FD_SET(s, &readset);
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FD_SET(s, &errset);
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tv.tv_sec = 10;
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tv.tv_usec = 0;
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ret = lwip_select(s + 1, &readset, NULL, &errset, &tv);
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LWIP_ASSERT("ret == 1", ret == 1);
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LWIP_ASSERT("!FD_ISSET(s, &errset)", !FD_ISSET(s, &errset));
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LWIP_ASSERT("FD_ISSET(s, &readset)", FD_ISSET(s, &readset));
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/* should not time out but receive a response */
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ret = lwip_read(s, rxbuf, 1024);
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/* might receive a second packet for HTTP/1.1 servers */
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if (ret > 0) {
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/* should return 0: closed */
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ret = lwip_read(s, rxbuf, 1024);
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LWIP_ASSERT("ret == 0", ret == 0);
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}
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/* close */
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ret = lwip_close(s);
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LWIP_ASSERT("ret == 0", ret == 0);
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printf("sockex_testrecv finished successfully\n");
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}
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/** helper struct for the 2 functions below (multithreaded: thread-argument) */
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struct sockex_select_helper {
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int socket;
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int wait_read;
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int expect_read;
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int wait_write;
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int expect_write;
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int wait_err;
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int expect_err;
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int wait_ms;
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sys_sem_t sem;
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};
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/** helper thread to wait for socket events using select */
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static void
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sockex_select_waiter(void *arg)
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{
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struct sockex_select_helper *helper = (struct sockex_select_helper *)arg;
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int ret;
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fd_set readset;
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fd_set writeset;
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fd_set errset;
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struct timeval tv;
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LWIP_ASSERT("helper != NULL", helper != NULL);
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FD_ZERO(&readset);
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FD_ZERO(&writeset);
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FD_ZERO(&errset);
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if (helper->wait_read) {
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FD_SET(helper->socket, &readset);
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}
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if (helper->wait_write) {
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FD_SET(helper->socket, &writeset);
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}
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if (helper->wait_err) {
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FD_SET(helper->socket, &errset);
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}
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tv.tv_sec = helper->wait_ms / 1000;
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tv.tv_usec = (helper->wait_ms % 1000) * 1000;
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ret = lwip_select(helper->socket, &readset, &writeset, &errset, &tv);
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if (helper->expect_read || helper->expect_write || helper->expect_err) {
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LWIP_ASSERT("ret > 0", ret > 0);
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} else {
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LWIP_ASSERT("ret == 0", ret == 0);
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}
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if (helper->expect_read) {
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LWIP_ASSERT("FD_ISSET(helper->socket, &readset)", FD_ISSET(helper->socket, &readset));
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} else {
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LWIP_ASSERT("!FD_ISSET(helper->socket, &readset)", !FD_ISSET(helper->socket, &readset));
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}
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if (helper->expect_write) {
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LWIP_ASSERT("FD_ISSET(helper->socket, &writeset)", FD_ISSET(helper->socket, &writeset));
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} else {
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LWIP_ASSERT("!FD_ISSET(helper->socket, &writeset)", !FD_ISSET(helper->socket, &writeset));
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}
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if (helper->expect_err) {
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LWIP_ASSERT("FD_ISSET(helper->socket, &errset)", FD_ISSET(helper->socket, &errset));
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} else {
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LWIP_ASSERT("!FD_ISSET(helper->socket, &errset)", !FD_ISSET(helper->socket, &errset));
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}
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sys_sem_signal(&helper->sem);
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}
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/** This is an example function that tests
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more than one thread being active in select. */
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static void
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sockex_testtwoselects(void *arg)
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{
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int s1;
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int s2;
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int ret;
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struct sockaddr_in addr;
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size_t len;
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err_t lwiperr;
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struct sockex_select_helper h1, h2, h3, h4;
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LWIP_UNUSED_ARG(arg);
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/* set up address to connect to */
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memset(&addr, 0, sizeof(addr));
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addr.sin_len = sizeof(addr);
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addr.sin_family = AF_INET;
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addr.sin_port = PP_HTONS(SOCK_TARGET_PORT);
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addr.sin_addr.s_addr = inet_addr(SOCK_TARGET_HOST);
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/* create the sockets */
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s1 = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s1 >= 0", s1 >= 0);
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s2 = lwip_socket(AF_INET, SOCK_STREAM, 0);
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LWIP_ASSERT("s2 >= 0", s2 >= 0);
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/* connect, should succeed */
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ret = lwip_connect(s1, (struct sockaddr*)&addr, sizeof(addr));
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LWIP_ASSERT("ret == 0", ret == 0);
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ret = lwip_connect(s2, (struct sockaddr*)&addr, sizeof(addr));
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LWIP_ASSERT("ret == 0", ret == 0);
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/* write the start of a GET request */
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#define SNDSTR1 "G"
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len = strlen(SNDSTR1);
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ret = lwip_write(s1, SNDSTR1, len);
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LWIP_ASSERT("ret == len", ret == (int)len);
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ret = lwip_write(s2, SNDSTR1, len);
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LWIP_ASSERT("ret == len", ret == (int)len);
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h1.wait_read = 1;
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h1.wait_write = 1;
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h1.wait_err = 1;
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h1.expect_read = 0;
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h1.expect_write = 0;
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h1.expect_err = 0;
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lwiperr = sys_sem_new(&h1.sem, 0);
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LWIP_ASSERT("lwiperr == ERR_OK", lwiperr == ERR_OK);
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h1.socket = s1;
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h1.wait_ms = 500;
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h2 = h1;
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lwiperr = sys_sem_new(&h2.sem, 0);
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LWIP_ASSERT("lwiperr == ERR_OK", lwiperr == ERR_OK);
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h2.socket = s2;
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h2.wait_ms = 1000;
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h3 = h1;
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lwiperr = sys_sem_new(&h3.sem, 0);
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LWIP_ASSERT("lwiperr == ERR_OK", lwiperr == ERR_OK);
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h3.socket = s2;
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h3.wait_ms = 1500;
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h4 = h1;
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lwiperr = sys_sem_new(&h4.sem, 0);
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LWIP_ASSERT("lwiperr == ERR_OK", lwiperr == ERR_OK);
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h4.socket = s2;
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h4.wait_ms = 2000;
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/* select: all sockets should time out if the other side is a good HTTP server */
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sys_thread_new("sockex_select_waiter1", sockex_select_waiter, &h2, 0, 0);
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sys_msleep(100);
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sys_thread_new("sockex_select_waiter2", sockex_select_waiter, &h1, 0, 0);
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sys_msleep(100);
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sys_thread_new("sockex_select_waiter2", sockex_select_waiter, &h4, 0, 0);
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sys_msleep(100);
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sys_thread_new("sockex_select_waiter2", sockex_select_waiter, &h3, 0, 0);
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sys_sem_wait(&h1.sem);
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sys_sem_wait(&h2.sem);
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sys_sem_wait(&h3.sem);
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sys_sem_wait(&h4.sem);
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/* close */
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ret = lwip_close(s1);
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LWIP_ASSERT("ret == 0", ret == 0);
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ret = lwip_close(s2);
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|
LWIP_ASSERT("ret == 0", ret == 0);
|
|
|
|
printf("sockex_testtwoselects finished successfully\n");
|
|
}
|
|
|
|
void socket_examples_init(void)
|
|
{
|
|
sys_thread_new("sockex_nonblocking_connect", sockex_nonblocking_connect, NULL, 0, 0);
|
|
sys_thread_new("sockex_testrecv", sockex_testrecv, NULL, 0, 0);
|
|
/*sys_thread_new("sockex_testtwoselects", sockex_testtwoselects, NULL, 0, 0);*/
|
|
}
|
|
|
|
#endif /* LWIP_SOCKETS */
|