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Diffstat (limited to 'plugins/FTPFileYM/curl/docs/examples/multi-debugcallback.c')
| -rw-r--r-- | plugins/FTPFileYM/curl/docs/examples/multi-debugcallback.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/plugins/FTPFileYM/curl/docs/examples/multi-debugcallback.c b/plugins/FTPFileYM/curl/docs/examples/multi-debugcallback.c new file mode 100644 index 0000000000..8eedcee5b5 --- /dev/null +++ b/plugins/FTPFileYM/curl/docs/examples/multi-debugcallback.c @@ -0,0 +1,205 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ +/* This is an example showing the multi interface and the debug callback. */ + +#include <stdio.h> +#include <string.h> + +/* somewhat unix-specific */ +#include <sys/time.h> +#include <unistd.h> + +/* curl stuff */ +#include <curl/curl.h> + +typedef char bool; +#define TRUE 1 + +static +void dump(const char *text, + FILE *stream, unsigned char *ptr, size_t size, + bool nohex) +{ + size_t i; + size_t c; + + unsigned int width=0x10; + + if(nohex) + /* without the hex output, we can fit more on screen */ + width = 0x40; + + fprintf(stream, "%s, %10.10ld bytes (0x%8.8lx)\n", + text, (long)size, (long)size); + + for(i=0; i<size; i+= width) { + + fprintf(stream, "%4.4lx: ", (long)i); + + if(!nohex) { + /* hex not disabled, show it */ + for(c = 0; c < width; c++) + if(i+c < size) + fprintf(stream, "%02x ", ptr[i+c]); + else + fputs(" ", stream); + } + + for(c = 0; (c < width) && (i+c < size); c++) { + /* check for 0D0A; if found, skip past and start a new line of output */ + if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) { + i+=(c+2-width); + break; + } + fprintf(stream, "%c", + (ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.'); + /* check again for 0D0A, to avoid an extra \n if it's at width */ + if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) { + i+=(c+3-width); + break; + } + } + fputc('\n', stream); /* newline */ + } + fflush(stream); +} + +static +int my_trace(CURL *handle, curl_infotype type, + unsigned char *data, size_t size, + void *userp) +{ + const char *text; + + (void)userp; + (void)handle; /* prevent compiler warning */ + + switch (type) { + case CURLINFO_TEXT: + fprintf(stderr, "== Info: %s", data); + default: /* in case a new one is introduced to shock us */ + return 0; + + case CURLINFO_HEADER_OUT: + text = "=> Send header"; + break; + case CURLINFO_DATA_OUT: + text = "=> Send data"; + break; + case CURLINFO_HEADER_IN: + text = "<= Recv header"; + break; + case CURLINFO_DATA_IN: + text = "<= Recv data"; + break; + } + + dump(text, stderr, data, size, TRUE); + return 0; +} + +/* + * Simply download a HTTP file. + */ +int main(void) +{ + CURL *http_handle; + CURLM *multi_handle; + + int still_running; /* keep number of running handles */ + + http_handle = curl_easy_init(); + + /* set the options (I left out a few, you'll get the point anyway) */ + curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.example.com/"); + + curl_easy_setopt(http_handle, CURLOPT_DEBUGFUNCTION, my_trace); + curl_easy_setopt(http_handle, CURLOPT_VERBOSE, 1L); + + /* init a multi stack */ + multi_handle = curl_multi_init(); + + /* add the individual transfers */ + curl_multi_add_handle(multi_handle, http_handle); + + /* we start some action by calling perform right away */ + curl_multi_perform(multi_handle, &still_running); + + do { + struct timeval timeout; + int rc; /* select() return code */ + + fd_set fdread; + fd_set fdwrite; + fd_set fdexcep; + int maxfd = -1; + + long curl_timeo = -1; + + FD_ZERO(&fdread); + FD_ZERO(&fdwrite); + FD_ZERO(&fdexcep); + + /* set a suitable timeout to play around with */ + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + curl_multi_timeout(multi_handle, &curl_timeo); + if(curl_timeo >= 0) { + timeout.tv_sec = curl_timeo / 1000; + if(timeout.tv_sec > 1) + timeout.tv_sec = 1; + else + timeout.tv_usec = (curl_timeo % 1000) * 1000; + } + + /* get file descriptors from the transfers */ + curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); + + /* In a real-world program you OF COURSE check the return code of the + function calls. On success, the value of maxfd is guaranteed to be + greater or equal than -1. We call select(maxfd + 1, ...), specially in + case of (maxfd == -1), we call select(0, ...), which is basically equal + to sleep. */ + + rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); + + switch(rc) { + case -1: + /* select error */ + still_running = 0; + printf("select() returns error, this is badness\n"); + break; + case 0: + default: + /* timeout or readable/writable sockets */ + curl_multi_perform(multi_handle, &still_running); + break; + } + } while(still_running); + + curl_multi_cleanup(multi_handle); + + curl_easy_cleanup(http_handle); + + return 0; +} |