
Webserver example for Nuvoton NuMaker boards and mbed OS 5.15 - HTTP 1.1 and multi-threaded.
For Mbed OS 6, please use the NuMaker-simple-httpd example.
This application demonstrates how to run an HTTP server on an mbed OS 5 device. It is derived from http-webserver-example Request parsing is done through nodejs/http-parser.
Fixed for Mbed OS 5.15 or later
Tested on
NuMaker IoT-M487 with Ethernet NuMaker PFM-M487 with Ethernet
Revision 0:41f820ea137a, committed 2017-07-31
- Comitter:
- Jan Jongboom
- Date:
- Mon Jul 31 15:41:22 2017 +0200
- Child:
- 1:fe3df398bdf5
- Commit message:
- Initial release
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,4 @@ +.mbed +BUILD/ +mbed_settings.* +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.hgignore Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,8 @@ +syntax: glob +.mbed +BUILD/ +mbed_settings.* +mbed-os/ +easy-connect/ +mbed-http/ +.git/
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LICENSE Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,191 @@ +Apache License +Version 2.0, January 2004 +http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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Limitation of Liability. + +In no event and under no legal theory, whether in tort (including negligence), +contract, or otherwise, unless required by applicable law (such as deliberate +and grossly negligent acts) or agreed to in writing, shall any Contributor be +liable to You for damages, including any direct, indirect, special, incidental, +or consequential damages of any character arising as a result of this License or +out of the use or inability to use the Work (including but not limited to +damages for loss of goodwill, work stoppage, computer failure or malfunction, or +any and all other commercial damages or losses), even if such Contributor has +been advised of the possibility of such damages. + +9. Accepting Warranty or Additional Liability. + +While redistributing the Work or Derivative Works thereof, You may choose to +offer, and charge a fee for, acceptance of support, warranty, indemnity, or +other liability obligations and/or rights consistent with this License. However, +in accepting such obligations, You may act only on Your own behalf and on Your +sole responsibility, not on behalf of any other Contributor, and only if You +agree to indemnify, defend, and hold each Contributor harmless for any liability +incurred by, or claims asserted against, such Contributor by reason of your +accepting any such warranty or additional liability. + +--- + +http_parser.c is based on src/http/ngx_http_parse.c from NGINX copyright +Igor Sysoev. + +Additional changes are licensed under the same terms as NGINX and +copyright Joyent, Inc. and other Node contributors. All rights reserved. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to +deal in the Software without restriction, including without limitation the +rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +sell copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +IN THE SOFTWARE.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,20 @@ +# mbed-os-example-http-server + +This application demonstrates how to run an HTTP server on an mbed OS 5 device. + +Request parsing is done through [nodejs/http-parser](https://github.com/nodejs/http-parser). + +## To build + +1. Open ``mbed_app.json`` and change the `network-interface` option to your connectivity method ([more info](https://github.com/ARMmbed/easy-connect)). +2. Build the project in the online compiler or using mbed CLI. +3. Flash the project to your development board. +4. Attach a serial monitor to your board to see the debug messages. + +## Tested on + +* K64F with Ethernet. +* NUCLEO_F411RE with ESP8266. + * For ESP8266, you need [this patch](https://github.com/ARMmbed/esp8266-driver/pull/41). + +But every networking stack that supports the [mbed OS 5 NetworkInterface API](https://docs.mbed.com/docs/mbed-os-api-reference/en/latest/APIs/communication/network_sockets/) should work.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/easy-connect.lib Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/easy-connect/#e7629734c9846617dd6a55e181a851d7ae7a62b9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-http.lib Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,1 @@ +https://developer.mbed.org/teams/sandbox/code/mbed-http/#6e0025e01b98
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#ed9d1da9dd0c43907ba40cba5ebd9f2c6da3dc07
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed_app.json Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,50 @@ +{ + "config": { + "network-interface": { + "help": "options are ETHERNET, WIFI_ESP8266, WIFI_ODIN, WIFI_RTW, MESH_LOWPAN_ND, MESH_THREAD", + "value": "WIFI_ESP8266" + }, + "mesh_radio_type": { + "help": "options are ATMEL, MCR20, SPIRIT1, EFR32", + "value": "ATMEL" + }, + "esp8266-tx": { + "help": "Pin used as TX (connects to ESP8266 RX)", + "value": "D1" + }, + "esp8266-rx": { + "help": "Pin used as RX (connects to ESP8266 TX)", + "value": "D0" + }, + "esp8266-debug": { + "value": true + }, + "wifi-ssid": { + "value": "\"SSID\"" + }, + "wifi-password": { + "value": "\"Password\"" + } + }, + "target_overrides": { + "*": { + "target.features_add": ["NANOSTACK", "LOWPAN_ROUTER", "COMMON_PAL"], + "mbed-mesh-api.6lowpan-nd-channel-page": 0, + "mbed-mesh-api.6lowpan-nd-channel": 12, + "mbed-trace.enable": 0, + "mbed-http.http-buffer-size": 2048 + }, + "HEXIWEAR": { + "esp8266-tx": "PTD3", + "esp8266-rx": "PTD2" + }, + "NUCLEO_F401RE": { + "esp8266-tx": "D8", + "esp8266-rx": "D2" + }, + "NUCLEO_F411RE": { + "esp8266-tx": "D8", + "esp8266-rx": "D2" + } + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/profiles/debug-c++11.json Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,49 @@ +{ + "GCC_ARM": { + "common": ["-c", "-Wall", "-Wextra", + "-Wno-unused-parameter", "-Wno-missing-field-initializers", + "-fmessage-length=0", "-fno-exceptions", "-fno-builtin", + "-ffunction-sections", "-fdata-sections", "-funsigned-char", + "-MMD", "-fno-delete-null-pointer-checks", + "-fomit-frame-pointer", "-O0", "-g3", "-DMBED_DEBUG", + "-DMBED_TRAP_ERRORS_ENABLED=1"], + "asm": ["-x", "assembler-with-cpp"], + "c": ["-std=gnu99"], + "cxx": ["-std=gnu++11", "-fno-rtti", "-Wvla"], + "ld": ["-Wl,--gc-sections", "-Wl,--wrap,main", "-Wl,--wrap,_malloc_r", + "-Wl,--wrap,_free_r", "-Wl,--wrap,_realloc_r", "-Wl,--wrap,_memalign_r", + "-Wl,--wrap,_calloc_r", "-Wl,--wrap,exit", "-Wl,--wrap,atexit", + "-Wl,-n"] + }, + "ARM": { + "common": ["-c", "--gnu", "-Otime", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O0", "-g", "-DMBED_DEBUG", + "-DMBED_TRAP_ERRORS_ENABLED=1"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": [] + }, + "uARM": { + "common": ["-c", "--gnu", "-Otime", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O0", "-D__MICROLIB", "-g", + "--library_type=microlib", "-DMBED_RTOS_SINGLE_THREAD", "-DMBED_DEBUG", + "-DMBED_TRAP_ERRORS_ENABLED=1"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": ["--library_type=microlib"] + }, + "IAR": { + "common": [ + "--no_wrap_diagnostics", "-e", + "--diag_suppress=Pa050,Pa084,Pa093,Pa082", "-On", "-r", "-DMBED_DEBUG", + "-DMBED_TRAP_ERRORS_ENABLED=1"], + "asm": [], + "c": ["--vla"], + "cxx": ["--guard_calls", "--no_static_destruction"], + "ld": ["--skip_dynamic_initialization", "--threaded_lib"] + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/profiles/develop-c++11.json Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,45 @@ +{ + "GCC_ARM": { + "common": ["-c", "-Wall", "-Wextra", + "-Wno-unused-parameter", "-Wno-missing-field-initializers", + "-fmessage-length=0", "-fno-exceptions", "-fno-builtin", + "-ffunction-sections", "-fdata-sections", "-funsigned-char", + "-MMD", "-fno-delete-null-pointer-checks", + "-fomit-frame-pointer", "-Os"], + "asm": ["-x", "assembler-with-cpp"], + "c": ["-std=gnu99"], + "cxx": ["-std=gnu++11", "-fno-rtti", "-Wvla"], + "ld": ["-Wl,--gc-sections", "-Wl,--wrap,main", "-Wl,--wrap,_malloc_r", + "-Wl,--wrap,_free_r", "-Wl,--wrap,_realloc_r", "-Wl,--wrap,_memalign_r", + "-Wl,--wrap,_calloc_r", "-Wl,--wrap,exit", "-Wl,--wrap,atexit", + "-Wl,-n"] + }, + "ARM": { + "common": ["-c", "--gnu", "-Otime", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O3"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": [] + }, + "uARM": { + "common": ["-c", "--gnu", "-Otime", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O3", "-D__MICROLIB", + "--library_type=microlib", "-DMBED_RTOS_SINGLE_THREAD"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": ["--library_type=microlib"] + }, + "IAR": { + "common": [ + "--no_wrap_diagnostics", "-e", + "--diag_suppress=Pa050,Pa084,Pa093,Pa082", "-Oh"], + "asm": [], + "c": ["--vla"], + "cxx": ["--guard_calls", "--no_static_destruction"], + "ld": ["--skip_dynamic_initialization", "--threaded_lib"] + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/profiles/release-c++11.json Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,45 @@ +{ + "GCC_ARM": { + "common": ["-c", "-Wall", "-Wextra", + "-Wno-unused-parameter", "-Wno-missing-field-initializers", + "-fmessage-length=0", "-fno-exceptions", "-fno-builtin", + "-ffunction-sections", "-fdata-sections", "-funsigned-char", + "-MMD", "-fno-delete-null-pointer-checks", + "-fomit-frame-pointer", "-Os", "-DNDEBUG"], + "asm": ["-x", "assembler-with-cpp"], + "c": ["-std=gnu99"], + "cxx": ["-std=gnu++11", "-fno-rtti", "-Wvla"], + "ld": ["-Wl,--gc-sections", "-Wl,--wrap,main", "-Wl,--wrap,_malloc_r", + "-Wl,--wrap,_free_r", "-Wl,--wrap,_realloc_r", "-Wl,--wrap,_memalign_r", + "-Wl,--wrap,_calloc_r", "-Wl,--wrap,exit", "-Wl,--wrap,atexit", + "-Wl,-n"] + }, + "ARM": { + "common": ["-c", "--gnu", "-Ospace", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O3", "-DNDEBUG"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": [] + }, + "uARM": { + "common": ["-c", "--gnu", "-Ospace", "--split_sections", + "--apcs=interwork", "--brief_diagnostics", "--restrict", + "--multibyte_chars", "-O3", "-D__MICROLIB", + "--library_type=microlib", "-DMBED_RTOS_SINGLE_THREAD", "-DNDEBUG"], + "asm": [], + "c": ["--md", "--no_depend_system_headers", "--c99", "-D__ASSERT_MSG"], + "cxx": ["--cpp", "--no_rtti", "--no_vla"], + "ld": ["--library_type=microlib"] + }, + "IAR": { + "common": [ + "--no_wrap_diagnostics", "-e", + "--diag_suppress=Pa050,Pa084,Pa093,Pa082", "-Ohz", "-DNDEBUG"], + "asm": [], + "c": ["--vla"], + "cxx": ["--guard_calls", "--no_static_destruction"], + "ld": ["--skip_dynamic_initialization", "--threaded_lib"] + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/http_response_builder.h Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,181 @@ +/* + * PackageLicenseDeclared: Apache-2.0 + * Copyright (c) 2017 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef _MBED_HTTP_RESPONSE_BUILDER_ +#define _MBED_HTTP_RESPONSE_BUILDER_ + +#include <string> +#include <map> +#include "http_parser.h" +#include "http_parsed_url.h" + +static const char* get_http_status_string(uint16_t status_code) { + switch (status_code) { + case 100: return "Continue"; + case 101: return "Switching Protocols"; + case 102: return "Processing"; + case 200: return "OK"; + case 201: return "Created"; + case 202: return "Accepted"; + case 203: return "Non-Authoritative Information"; + case 204: return "No Content"; + case 205: return "Reset Content"; + case 206: return "Partial Content"; + case 207: return "Multi-Status"; + case 208: return "Already Reported"; + case 226: return "IM Used"; + case 300: return "Multiple Choices"; + case 301: return "Moved Permanently"; + case 302: return "Found"; + case 303: return "See Other"; + case 304: return "Not Modified"; + case 305: return "Use Proxy"; + case 307: return "Temporary Redirect"; + case 308: return "Permanent Redirect"; + case 400: return "Bad Request"; + case 401: return "Unauthorized"; + case 402: return "Payment Required"; + case 403: return "Forbidden"; + case 404: return "Not Found"; + case 405: return "Method Not Allowed"; + case 406: return "Not Acceptable"; + case 407: return "Proxy Authentication Required"; + case 408: return "Request Timeout"; + case 409: return "Conflict"; + case 410: return "Gone"; + case 411: return "Length Required"; + case 412: return "Precondition Failed"; + case 413: return "Payload Too Large"; + case 414: return "URI Too Long"; + case 415: return "Unsupported Media Type"; + case 416: return "Range Not Satisfiable"; + case 417: return "Expectation Failed"; + case 421: return "Misdirected Request"; + case 422: return "Unprocessable Entity"; + case 423: return "Locked"; + case 424: return "Failed Dependency"; + case 426: return "Upgrade Required"; + case 428: return "Precondition Required"; + case 429: return "Too Many Requests"; + case 431: return "Request Header Fields Too Large"; + case 451: return "Unavailable For Legal Reasons"; + case 500: return "Internal Server Error"; + case 501: return "Not Implemented"; + case 502: return "Bad Gateway"; + case 503: return "Service Unavailable"; + case 504: return "Gateway Timeout"; + case 505: return "HTTP Version Not Supported"; + case 506: return "Variant Also Negotiates"; + case 507: return "Insufficient Storage"; + case 508: return "Loop Detected"; + case 510: return "Not Extended"; + case 511: return "Network Authentication Required"; + default : return "Unknown"; + } +} + +class HttpResponseBuilder { +public: + HttpResponseBuilder(uint16_t a_status_code) + : status_code(a_status_code), status_message(get_http_status_string(a_status_code)) + { + } + + /** + * Set a header for the request + * If the key already exists, it will be overwritten... + */ + void set_header(string key, string value) { + map<string, string>::iterator it = headers.find(key); + + if (it != headers.end()) { + it->second = value; + } + else { + headers.insert(headers.end(), pair<string, string>(key, value)); + } + } + + char* build(const void* body, size_t body_size, size_t* size) { + char buffer[10]; + snprintf(buffer, sizeof(buffer), "%d", body_size); + set_header("Content-Length", string(buffer)); + + char status_code_buffer[5]; + snprintf(status_code_buffer, sizeof(status_code_buffer), "%d", status_code /* max 5 digits */); + + *size = 0; + + // first line is HTTP/1.1 200 OK\r\n + *size += 8 + 1 + strlen(status_code_buffer) + 1 + strlen(status_message) + 2; + + // after that we'll do the headers + typedef map<string, string>::iterator it_type; + for(it_type it = headers.begin(); it != headers.end(); it++) { + // line is KEY: VALUE\r\n + *size += it->first.length() + 1 + 1 + it->second.length() + 2; + } + + // then the body, first an extra newline + *size += 2; + + // body + *size += body_size; + + // Now let's print it + char* res = (char*)calloc(*size + 1, 1); + char* originalRes = res; + + res += sprintf(res, "HTTP/1.1 %s %s\r\n", status_code_buffer, status_message); + + typedef map<string, string>::iterator it_type; + for(it_type it = headers.begin(); it != headers.end(); it++) { + // line is KEY: VALUE\r\n + res += sprintf(res, "%s: %s\r\n", it->first.c_str(), it->second.c_str()); + } + + res += sprintf(res, "\r\n"); + + if (body_size > 0) { + memcpy(res, body, body_size); + } + res += body_size; + + // Uncomment to debug... + // printf("----- BEGIN RESPONSE -----\n"); + // printf("%s", originalRes); + // printf("----- END RESPONSE -----\n"); + + return originalRes; + } + + nsapi_error_t send(TCPSocket* socket, const void* body, size_t body_size) { + if (!socket) return NSAPI_ERROR_NO_SOCKET; + + size_t res_size; + char* response = build(body, body_size, &res_size); + + return socket->send(response, res_size); + } + +private: + uint16_t status_code; + const char* status_message; + map<string, string> headers; +}; + +#endif // _MBED_HTTP_RESPONSE_BUILDER_
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/http_server.h Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,177 @@ +/* + * PackageLicenseDeclared: Apache-2.0 + * Copyright (c) 2017 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef _HTTP_SERVER_ +#define _HTTP_SERVER_ + +#include "mbed.h" +#include "http_request_parser.h" +#include "http_response.h" +#include "http_response_builder.h" + +#define HTTP_SERVER_MAX_CONCURRENT 5 + +typedef HttpResponse ParsedHttpRequest; + +/** + * \brief HttpServer implements the logic for setting up an HTTP server. + */ +class HttpServer { +public: + /** + * HttpRequest Constructor + * + * @param[in] network The network interface + */ + HttpServer(NetworkInterface* network) : server(network) { + + } + + ~HttpServer() { + for (size_t ix = 0; ix < HTTP_SERVER_MAX_CONCURRENT; ix++) { + if (socket_threads[ix]) { + delete socket_threads[ix]; + } + } + } + + /** + * Start listening + * + * @param[in] port The port to listen on + */ + nsapi_error_t bind(uint16_t port) { + server.listen(HTTP_SERVER_MAX_CONCURRENT); // max. concurrent connections... + return server.bind(port); + } + + /** + * Start running the server (it will run on it's own thread) + */ + nsapi_error_t start(uint16_t port, Callback<void(ParsedHttpRequest* request, TCPSocket* socket)> a_handler) { + server.listen(HTTP_SERVER_MAX_CONCURRENT); // max. concurrent connections... + + nsapi_error_t ret = server.bind(port); + if (ret != NSAPI_ERROR_OK) { + return ret; + } + + handler = a_handler; + + main_thread.start(callback(this, &HttpServer::main)); + + return NSAPI_ERROR_OK; + } + +private: + + void receive_data() { + // UNSAFE: should Mutex around it or something + TCPSocket* socket = sockets.back(); + + // needs to keep running until the socket gets closed + while (1) { + + ParsedHttpRequest* response = new ParsedHttpRequest(); + HttpParser* parser = new HttpParser(response, HTTP_REQUEST); + + // Set up a receive buffer (on the heap) + uint8_t* recv_buffer = (uint8_t*)malloc(HTTP_RECEIVE_BUFFER_SIZE); + + // TCPSocket::recv is called until we don't have any data anymore + nsapi_size_or_error_t recv_ret; + while ((recv_ret = socket->recv(recv_buffer, HTTP_RECEIVE_BUFFER_SIZE)) > 0) { + // Pass the chunk into the http_parser + size_t nparsed = parser->execute((const char*)recv_buffer, recv_ret); + if (nparsed != recv_ret) { + printf("Parsing failed... parsed %d bytes, received %d bytes\n", nparsed, recv_ret); + recv_ret = -2101; + break; + } + + if (response->is_message_complete()) { + break; + } + } + // error? + if (recv_ret < 0) { + printf("Error reading from socket %d\n", recv_ret); + + // error = recv_ret; + delete response; + delete parser; + free(recv_buffer); + + // q; should we always break out of the thread or only if NO_SOCKET ? + // should we delete socket here? the socket seems already gone... + if (recv_ret < -3000) { + return; + } + else { + continue; + } + } + + // When done, call parser.finish() + parser->finish(); + + // Free the receive buffer + free(recv_buffer); + + // Let user application handle the request, if user needs a handle to response they need to memcpy themselves + handler(response, socket); + + // Free the response and parser + delete response; + delete parser; + } + } + + void main() { + while (1) { + TCPSocket* clt_sock = new TCPSocket(); // Q: when should these be cleared? When not connected anymore? + SocketAddress clt_addr; + + nsapi_error_t accept_res = server.accept(clt_sock, &clt_addr); + if (accept_res == NSAPI_ERROR_OK) { + sockets.push_back(clt_sock); // so we can clear our disconnected sockets + + // and start listening for events there + Thread* t = new Thread(osPriorityNormal, 2048); + t->start(callback(this, &HttpServer::receive_data)); + + socket_threads.push_back(t); + } + + for (size_t ix = 0; ix < socket_threads.size(); ix++) { + if (socket_threads[ix]->get_state() == Thread::Deleted) { + delete socket_threads[ix]; + socket_threads.erase(socket_threads.begin() + ix); // what if there are two? + } + } + + } + } + + TCPServer server; + Thread main_thread; + vector<TCPSocket*> sockets; + vector<Thread*> socket_threads; + Callback<void(ParsedHttpRequest* request, TCPSocket* socket)> handler = 0; +}; + +#endif // _HTTP_SERVER
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/main.cpp Mon Jul 31 15:41:22 2017 +0200 @@ -0,0 +1,63 @@ +#include "mbed.h" +#include "easy-connect.h" +#include "http_server.h" +#include "http_response_builder.h" + +Serial pc(USBTX, USBRX); +DigitalOut led(LED1); + +// Requests come in here +void request_handler(ParsedHttpRequest* request, TCPSocket* socket) { + + printf("Request came in: %s %s\n", http_method_str(request->get_method()), request->get_url().c_str()); + + if (request->get_method() == HTTP_GET && request->get_url() == "/") { + HttpResponseBuilder builder(200); + builder.set_header("Content-Type", "text/html; charset=utf-8"); + + char response[] = "<html><head><title>Hello from mbed</title></head>" + "<body>" + "<h1>mbed webserver</h1>" + "<button id=\"toggle\">Toggle LED</button>" + "<script>document.querySelector('#toggle').onclick = function() {" + "var x = new XMLHttpRequest(); x.open('POST', '/toggle'); x.send();" + "}</script>" + "</body></html>"; + + builder.send(socket, response, sizeof(response) - 1); + } + else if (request->get_method() == HTTP_POST && request->get_url() == "/toggle") { + printf("toggle LED called\n"); + led = !led; + + HttpResponseBuilder builder(200); + builder.send(socket, NULL, 0); + } + else { + HttpResponseBuilder builder(404); + builder.send(socket, NULL, 0); + } +} + +int main() { + pc.baud(115200); + + // Connect to the network (see mbed_app.json for the connectivity method used) + NetworkInterface* network = easy_connect(true); + if (!network) { + printf("Cannot connect to the network, see serial output\n"); + return 1; + } + + HttpServer server(network); + nsapi_error_t res = server.start(8080, &request_handler); + + if (res == NSAPI_ERROR_OK) { + printf("Server is listening at http://%s:8080\n", network->get_ip_address()); + } + else { + printf("Server could not be started... %d\n", res); + } + + wait(osWaitForever); +}